The document discusses software testing strategies. It covers topics like test strategy, test planning, test case design, test execution, verification and validation, unit testing, integration testing, object-oriented testing, validation testing, debugging, and consequences of bugs. The overall strategy is to begin with unit testing, then conduct integration testing by integrating modules, followed by system and validation testing to ensure requirements are met.
JUnit is an open source Unit Testing Framework for JAVA. It is useful for Java Developers to write and run repeatable tests. Erich Gamma and Kent Beck initially develop it. It is an instance of xUnit architecture. As the name implies, it is used for Unit Testing of a small chunk of code.
This document discusses predicting defects in the system testing phase using a model based on a six sigma approach. The research aims to establish a defect prediction model to determine the number of defects to be found before testing begins. The model would help with resource planning, test coverage, and meeting deadlines. The research applies a define-measure-analyze-design-verify process to build the model using regression analysis on data from previous projects. Factors like requirements errors, design errors, and code errors are analyzed to determine their relationship to defects found during testing. The initial results found several significant factors that could be used to reliably predict defects.
Software Testing and Quality Assurance Assignment 3Gurpreet singh
Short questions :
Que 1 : Define Software Testing.
Que 2 : What is risk identification ?
Que 3 : What is SCM ?
Que 4 : Define Debugging.
Que 5 : Explain Configuration audit.
Que 6 : Differentiate between white box testing & black box testing.
Que 7 : What do you mean by metrics ?
Que 8 : What do you mean by version control ?
Que 9 : Explain Object Oriented Software Engineering.
Que 10 : What are the advantages and disadvantages of manual testing tools ?
Long Questions:
Que 1 : What do you mean by baselines ? Explain their importance.
Que 2 : What do you mean by change control ? Explain the various steps in detail.
Que 3 : Explain various types of testing in detail.
Que 4 : Differentiate between automated testing and manual testing.
Que 5 : What is web engineering ? Explain in detail its model and features.
IJCER (www.ijceronline.com) International Journal of computational Engineerin...ijceronline
This document summarizes various automated GUI testing approaches such as performance testing and analysis (PTA), model-based testing (MBT), combinatorial interaction testing (CIT), and GUI-based applications (GAPs). It also discusses existing GUI testing tools and compares their performance. The document proposes a unified model for testing both GUI and web-based applications together. An empirical study evaluates different test prioritization criteria and their effectiveness in improving fault detection rates on various applications. The study finds that prioritization based on 2-way and parameter-value interactions generally results in the best improvement for GUI apps, while frequency-based techniques are best for web apps from real user sessions.
The document provides information on software quality assurance and testing topics. It includes definitions of software quality assurance, differences between types of testing (static vs dynamic, client/server vs web applications), quality assurance activities, why testing cannot ensure quality, and more. FAQs cover topics such as prioritizing defects, establishing a QA process, and differences between QA and testing. The document is a collection of technical FAQs for software QA engineers and testers.
The document provides an introduction to software testing fundamentals and artifacts. It discusses test cases, test specifications, test planning, and test execution. Test cases are defined as a set of test inputs, execution conditions, and expected results to test a specific objective. Good test cases should be reasonable, exercise areas of interest, and make failures obvious. The document outlines steps for creating test cases such as breaking the application into testable modules, writing checklists, adding questions, and getting reviews from other testers and developers.
01 software test engineering (manual testing)Siddireddy Balu
The document discusses various topics related to manual software testing, including:
1. The software development life cycle and where testing fits in.
2. Different testing methodologies like black box, white box, and grey box testing.
3. The different levels of testing from unit to system level.
4. Types of testing like regression, compatibility, security, and performance testing.
5. The software testing life cycle process including test planning, development, execution and reporting.
Testing Terms & Definitions document defines over 50 types of software testing terms concisely. It includes definitions for acceptance testing, which validates a software meets acceptance criteria, accessibility testing for disabilities, and automated testing using tools without manual intervention. It also defines integration testing of modules, localization testing for different cultures, load/performance testing under normal and heavy usage, and negative/black box testing without knowledge of internal workings. The document provides brief yet informative definitions for a wide range of standard testing techniques.
JUnit is an open source Unit Testing Framework for JAVA. It is useful for Java Developers to write and run repeatable tests. Erich Gamma and Kent Beck initially develop it. It is an instance of xUnit architecture. As the name implies, it is used for Unit Testing of a small chunk of code.
This document discusses predicting defects in the system testing phase using a model based on a six sigma approach. The research aims to establish a defect prediction model to determine the number of defects to be found before testing begins. The model would help with resource planning, test coverage, and meeting deadlines. The research applies a define-measure-analyze-design-verify process to build the model using regression analysis on data from previous projects. Factors like requirements errors, design errors, and code errors are analyzed to determine their relationship to defects found during testing. The initial results found several significant factors that could be used to reliably predict defects.
Software Testing and Quality Assurance Assignment 3Gurpreet singh
Short questions :
Que 1 : Define Software Testing.
Que 2 : What is risk identification ?
Que 3 : What is SCM ?
Que 4 : Define Debugging.
Que 5 : Explain Configuration audit.
Que 6 : Differentiate between white box testing & black box testing.
Que 7 : What do you mean by metrics ?
Que 8 : What do you mean by version control ?
Que 9 : Explain Object Oriented Software Engineering.
Que 10 : What are the advantages and disadvantages of manual testing tools ?
Long Questions:
Que 1 : What do you mean by baselines ? Explain their importance.
Que 2 : What do you mean by change control ? Explain the various steps in detail.
Que 3 : Explain various types of testing in detail.
Que 4 : Differentiate between automated testing and manual testing.
Que 5 : What is web engineering ? Explain in detail its model and features.
IJCER (www.ijceronline.com) International Journal of computational Engineerin...ijceronline
This document summarizes various automated GUI testing approaches such as performance testing and analysis (PTA), model-based testing (MBT), combinatorial interaction testing (CIT), and GUI-based applications (GAPs). It also discusses existing GUI testing tools and compares their performance. The document proposes a unified model for testing both GUI and web-based applications together. An empirical study evaluates different test prioritization criteria and their effectiveness in improving fault detection rates on various applications. The study finds that prioritization based on 2-way and parameter-value interactions generally results in the best improvement for GUI apps, while frequency-based techniques are best for web apps from real user sessions.
The document provides information on software quality assurance and testing topics. It includes definitions of software quality assurance, differences between types of testing (static vs dynamic, client/server vs web applications), quality assurance activities, why testing cannot ensure quality, and more. FAQs cover topics such as prioritizing defects, establishing a QA process, and differences between QA and testing. The document is a collection of technical FAQs for software QA engineers and testers.
The document provides an introduction to software testing fundamentals and artifacts. It discusses test cases, test specifications, test planning, and test execution. Test cases are defined as a set of test inputs, execution conditions, and expected results to test a specific objective. Good test cases should be reasonable, exercise areas of interest, and make failures obvious. The document outlines steps for creating test cases such as breaking the application into testable modules, writing checklists, adding questions, and getting reviews from other testers and developers.
01 software test engineering (manual testing)Siddireddy Balu
The document discusses various topics related to manual software testing, including:
1. The software development life cycle and where testing fits in.
2. Different testing methodologies like black box, white box, and grey box testing.
3. The different levels of testing from unit to system level.
4. Types of testing like regression, compatibility, security, and performance testing.
5. The software testing life cycle process including test planning, development, execution and reporting.
Testing Terms & Definitions document defines over 50 types of software testing terms concisely. It includes definitions for acceptance testing, which validates a software meets acceptance criteria, accessibility testing for disabilities, and automated testing using tools without manual intervention. It also defines integration testing of modules, localization testing for different cultures, load/performance testing under normal and heavy usage, and negative/black box testing without knowledge of internal workings. The document provides brief yet informative definitions for a wide range of standard testing techniques.
50 points from the book_How Google tests SoftwareShenbaga Sundar
Google takes a blended approach to software development and testing where the two practices are interwoven and indistinguishable. Testing is considered an integral part of the development process, not a separate activity. Google emphasizes automated testing and uses a tiered release process involving Canary, Dev, Test, and Beta channels to carefully test and iterate new versions before public release. The roles of Software Engineer (SWE), Software Engineer in Test (SET), and Test Engineer (TE) work together in testing with SWEs and SETs focused more on unit and integration testing and TEs focused more on user testing.
The document discusses testing basics, including the need for testing software to ensure it is free from defects and meets requirements. The goals of testing are to check data completeness, transformations, quality, and performance. Testing aims to increase confidence in proper software functioning and avoid huge losses. Different types of testing are described, as well as the test life cycle and models like waterfall, spiral, incremental, and V-model. The document provides an overview of software testing fundamentals.
Google takes a systematic approach to testing software, with roles like software engineers, engineers in test, and test engineers. Teams are organized by product, and testing occurs in stages from small to large tests across channels like development, test, beta and production. Automated tools are used for bug reporting, metrics and bots to aid various types of testing, while documentation includes test plans, cases and risk analysis.
This document discusses test escape analysis (TEA), which analyzes defects that escaped testing to help improve testing efficiency. TEA examines past defects to identify patterns and trends, such as which test types or techniques could have caught which defects earlier. The benefits of early defect detection through improved testing are reduced costs, reputation, and engineer workload. TEA data from defect histories can show where to apply testing resources and procedure changes for maximum return.
New Creation Information Technologies provides independent software testing and verification services. They offer functional and non-functional testing capabilities across the entire testing lifecycle. Their services include test planning, test case development, test automation, defect tracking, and reporting to help clients reduce costs and improve quality.
This document discusses various topics related to software testing and verification and validation (V&V). It begins with an overview of test plan creation and different types of testing such as unit, integration, system, and object-oriented testing. It then defines the key differences between verification and validation. The rest of the document provides more details on V&V techniques like static and dynamic verification, software inspections, and testing. It also covers testing fundamentals, principles, testability factors, and different testing techniques like black-box and white-box testing.
A presentation that provides an overview of software testing approaches including "schools" of software testing and a variety of testing techniques and practices.
This document describes a constraint-based fitness function approach for search-based software testing. It begins with an introduction discussing the costs of programming errors and importance of software testing. It then provides an example program to motivate the approach, showing how test cases are executed and a fitness score calculated based on coverage of branches, including a "critical branch". The document aims to show that evolving the fitness function can significantly enhance search-based software testing.
This document contains a summary of a presentation on essential test management and planning. The presentation was given by Rick Craig of Software Quality Engineering and covered topics such as test methodology, test levels, test planning, and test management. The summary consisted of over 20 slides covering these various test management topics in detail.
White-box Testing: When Quality Really MattersTechWell
Jamie Mitchell explores perhaps the most underused test technique in our arsenal—white-box testing. Also known as structural testing, white-box requires some programming expertise, access to the code, and an analysis tool. If you only employ black-box testing, you could easily ship a system having tested only 50 percent or less of the code base. Not good! Although you might believe that the developers have performed sufficient unit and integration testing, how do you know that they have achieved the level of coverage your project requires? Jamie describes the levels of code coverage that the business and your customers may need—from statement coverage to modified condition/decision coverage. Leading you through examples of pseudocode, Jamie explains when you should strive to achieve different code coverage target levels. Even if you have no personal programming experience, understanding structural testing will make you a better tester. So, join Jamie for some code-diving!
Thomas Kauders - Agile Test Design And Automation of a Life-Critical Medical ...TEST Huddle
EuroSTAR Software Testing Conference 2010 presentation on Agile Test Design And Automation of a Life-Critical Medical Device by Thomas Kauders. See more at: http://conference.eurostarsoftwaretesting.com/past-presentations/
The document provides an overview of software testing, including:
- The testing life cycle and types of testing such as unit, integration, system, and regression testing.
- Key terms like errors, bugs, faults, and failures.
- The roles of testers, test leads, and test managers.
- When testing occurs in the software development life cycle.
- Test planning, test cases, and test tools like JIRA, Confluence, and TestRail.
- Certifications available in testing and common job opportunities in the software industry.
This paper describes the different techniques of testing the software. This paper explicitly addresses the idea for testability and the important thing is that the testing itself-not just by saying that testability is a desirable goal, but by showing how to do it. Software testing is the process we used to measure the quality of developed software. Software Testing is not just about error-finding and their solution but also about checking the client requirements and testing that those requirements are met by the software solution. It is the most important functional phase in the Software Development Life Cycle(SDLC) as it exhibits all mistakes, flaws and errors in the developed software. Without finding these errors, technically termed as ‘bugs,’ software development is not considered to be complete. Hence, software testing becomes an important parameter for assuring quality of the software product. We discuss here about when to start and when to stop the testing of software. How errors or Bugs are formed and rectified. How software testing is done i.e. with the help of Team Work.
This document provides an overview of software testing techniques and their maturation over time. It examines the major research results that have contributed to the growth of testing as an area. The document defines testing goals and categories, including functional vs structural testing and static vs dynamic analysis. It also discusses testing at different stages of the software lifecycle from unit to system level. The technology maturation model and research paradigms framework are used to analyze how testing techniques have evolved from initial ideas to broader solutions and changes in research questions and strategies over time.
The document discusses quality standards, practices, and conventions for software testing and quality assurance. It covers topics such as software testing types, quality assurance, quality concepts, software standards organizations, basic practices like reviews and inspections, and coding conventions. Software configuration management is also introduced which involves tracking and controlling changes in software.
1) Organizations are increasingly aware of the importance of quality in application development and are setting higher standards for quality and usability of applications.
2) Software testing is a vital part of quality management and helps identify defects before production to improve integrity, performance and reliability.
3) Ordina takes a risk-based approach to testing to focus on critical components, potentially saving time and money. A risk analysis determines which parts of the system require more testing based on impact, probability and chance of errors.
Testing software is essential to ensure it works properly and performs as intended. Various testing levels are described from unit testing of individual components to system testing of integrated modules. An overview of the software development lifecycle is provided from requirements gathering to maintenance, and key testing activities are outlined at each stage like test planning, case design, execution, and reporting. Standard documents involved in testing are also summarized such as test plans, cases, and bug reports to track issues.
This document provides an overview of software testing and is intended for beginners. It discusses key topics such as the software development life cycle, types of testing, test planning and case development, defect tracking, test automation, and certifications. The document is presented over multiple pages and sections covering these essential software testing concepts and processes at a high level to introduce new testers to the field.
The document discusses key concepts in software testing including software quality, software quality assurance (SQA), software quality control (SQC), and the V-Model. It describes the software development lifecycle including requirements gathering, design, coding, testing, and maintenance. It provides details on different types of testing like unit testing, integration testing, system testing, and reviews/inspections conducted at various stages. Key testing techniques mentioned are black box testing, white box testing, basis path testing, control structure testing, and mutation testing. The V-Model mapping development stages to corresponding testing stages is also explained.
This document contains 112 questions related to software testing, quality assurance, and automation. The questions cover a wide range of topics including the roles of QA and testing, test planning, bug reporting, test types, automation, metrics, and more. The questions are intended for software testing interviews and range from basic to more advanced.
The document describes a test plan for a Waste Management Inspection Tracking System (WMITS) software. It includes:
1. An overview of what must be included in a test plan such as the test specification, test procedures for unit, integration, and validation testing.
2. A case study of testing the WMITS software requirements specification, which aims to automate waste management inspections and minimize time/paperwork.
3. Details of the testing strategy including unit testing of individual modules, integration testing by running the software at the client's location, and validation testing to verify requirements.
Foundations of Software Testing Lecture 4Iosif Itkin
This lecture is a part of the online course on Software Testing for Complex Intelligent Systems and Autonomous Vehicles. The course lectures provide the theoretical basics of testing autonomous systems based on artificial intelligence.
The fourth lecture of the course entitled Foundations of Software Testing reviews the ‘absence-of-errors fallacy’ and other principles of software testing, as well as the types and levels of software testing. The lecture also provides a fuller picture of the understanding of test objectives and methodologies by different schools of thought within the software testing domain.
50 points from the book_How Google tests SoftwareShenbaga Sundar
Google takes a blended approach to software development and testing where the two practices are interwoven and indistinguishable. Testing is considered an integral part of the development process, not a separate activity. Google emphasizes automated testing and uses a tiered release process involving Canary, Dev, Test, and Beta channels to carefully test and iterate new versions before public release. The roles of Software Engineer (SWE), Software Engineer in Test (SET), and Test Engineer (TE) work together in testing with SWEs and SETs focused more on unit and integration testing and TEs focused more on user testing.
The document discusses testing basics, including the need for testing software to ensure it is free from defects and meets requirements. The goals of testing are to check data completeness, transformations, quality, and performance. Testing aims to increase confidence in proper software functioning and avoid huge losses. Different types of testing are described, as well as the test life cycle and models like waterfall, spiral, incremental, and V-model. The document provides an overview of software testing fundamentals.
Google takes a systematic approach to testing software, with roles like software engineers, engineers in test, and test engineers. Teams are organized by product, and testing occurs in stages from small to large tests across channels like development, test, beta and production. Automated tools are used for bug reporting, metrics and bots to aid various types of testing, while documentation includes test plans, cases and risk analysis.
This document discusses test escape analysis (TEA), which analyzes defects that escaped testing to help improve testing efficiency. TEA examines past defects to identify patterns and trends, such as which test types or techniques could have caught which defects earlier. The benefits of early defect detection through improved testing are reduced costs, reputation, and engineer workload. TEA data from defect histories can show where to apply testing resources and procedure changes for maximum return.
New Creation Information Technologies provides independent software testing and verification services. They offer functional and non-functional testing capabilities across the entire testing lifecycle. Their services include test planning, test case development, test automation, defect tracking, and reporting to help clients reduce costs and improve quality.
This document discusses various topics related to software testing and verification and validation (V&V). It begins with an overview of test plan creation and different types of testing such as unit, integration, system, and object-oriented testing. It then defines the key differences between verification and validation. The rest of the document provides more details on V&V techniques like static and dynamic verification, software inspections, and testing. It also covers testing fundamentals, principles, testability factors, and different testing techniques like black-box and white-box testing.
A presentation that provides an overview of software testing approaches including "schools" of software testing and a variety of testing techniques and practices.
This document describes a constraint-based fitness function approach for search-based software testing. It begins with an introduction discussing the costs of programming errors and importance of software testing. It then provides an example program to motivate the approach, showing how test cases are executed and a fitness score calculated based on coverage of branches, including a "critical branch". The document aims to show that evolving the fitness function can significantly enhance search-based software testing.
This document contains a summary of a presentation on essential test management and planning. The presentation was given by Rick Craig of Software Quality Engineering and covered topics such as test methodology, test levels, test planning, and test management. The summary consisted of over 20 slides covering these various test management topics in detail.
White-box Testing: When Quality Really MattersTechWell
Jamie Mitchell explores perhaps the most underused test technique in our arsenal—white-box testing. Also known as structural testing, white-box requires some programming expertise, access to the code, and an analysis tool. If you only employ black-box testing, you could easily ship a system having tested only 50 percent or less of the code base. Not good! Although you might believe that the developers have performed sufficient unit and integration testing, how do you know that they have achieved the level of coverage your project requires? Jamie describes the levels of code coverage that the business and your customers may need—from statement coverage to modified condition/decision coverage. Leading you through examples of pseudocode, Jamie explains when you should strive to achieve different code coverage target levels. Even if you have no personal programming experience, understanding structural testing will make you a better tester. So, join Jamie for some code-diving!
Thomas Kauders - Agile Test Design And Automation of a Life-Critical Medical ...TEST Huddle
EuroSTAR Software Testing Conference 2010 presentation on Agile Test Design And Automation of a Life-Critical Medical Device by Thomas Kauders. See more at: http://conference.eurostarsoftwaretesting.com/past-presentations/
The document provides an overview of software testing, including:
- The testing life cycle and types of testing such as unit, integration, system, and regression testing.
- Key terms like errors, bugs, faults, and failures.
- The roles of testers, test leads, and test managers.
- When testing occurs in the software development life cycle.
- Test planning, test cases, and test tools like JIRA, Confluence, and TestRail.
- Certifications available in testing and common job opportunities in the software industry.
This paper describes the different techniques of testing the software. This paper explicitly addresses the idea for testability and the important thing is that the testing itself-not just by saying that testability is a desirable goal, but by showing how to do it. Software testing is the process we used to measure the quality of developed software. Software Testing is not just about error-finding and their solution but also about checking the client requirements and testing that those requirements are met by the software solution. It is the most important functional phase in the Software Development Life Cycle(SDLC) as it exhibits all mistakes, flaws and errors in the developed software. Without finding these errors, technically termed as ‘bugs,’ software development is not considered to be complete. Hence, software testing becomes an important parameter for assuring quality of the software product. We discuss here about when to start and when to stop the testing of software. How errors or Bugs are formed and rectified. How software testing is done i.e. with the help of Team Work.
This document provides an overview of software testing techniques and their maturation over time. It examines the major research results that have contributed to the growth of testing as an area. The document defines testing goals and categories, including functional vs structural testing and static vs dynamic analysis. It also discusses testing at different stages of the software lifecycle from unit to system level. The technology maturation model and research paradigms framework are used to analyze how testing techniques have evolved from initial ideas to broader solutions and changes in research questions and strategies over time.
The document discusses quality standards, practices, and conventions for software testing and quality assurance. It covers topics such as software testing types, quality assurance, quality concepts, software standards organizations, basic practices like reviews and inspections, and coding conventions. Software configuration management is also introduced which involves tracking and controlling changes in software.
1) Organizations are increasingly aware of the importance of quality in application development and are setting higher standards for quality and usability of applications.
2) Software testing is a vital part of quality management and helps identify defects before production to improve integrity, performance and reliability.
3) Ordina takes a risk-based approach to testing to focus on critical components, potentially saving time and money. A risk analysis determines which parts of the system require more testing based on impact, probability and chance of errors.
Testing software is essential to ensure it works properly and performs as intended. Various testing levels are described from unit testing of individual components to system testing of integrated modules. An overview of the software development lifecycle is provided from requirements gathering to maintenance, and key testing activities are outlined at each stage like test planning, case design, execution, and reporting. Standard documents involved in testing are also summarized such as test plans, cases, and bug reports to track issues.
This document provides an overview of software testing and is intended for beginners. It discusses key topics such as the software development life cycle, types of testing, test planning and case development, defect tracking, test automation, and certifications. The document is presented over multiple pages and sections covering these essential software testing concepts and processes at a high level to introduce new testers to the field.
The document discusses key concepts in software testing including software quality, software quality assurance (SQA), software quality control (SQC), and the V-Model. It describes the software development lifecycle including requirements gathering, design, coding, testing, and maintenance. It provides details on different types of testing like unit testing, integration testing, system testing, and reviews/inspections conducted at various stages. Key testing techniques mentioned are black box testing, white box testing, basis path testing, control structure testing, and mutation testing. The V-Model mapping development stages to corresponding testing stages is also explained.
This document contains 112 questions related to software testing, quality assurance, and automation. The questions cover a wide range of topics including the roles of QA and testing, test planning, bug reporting, test types, automation, metrics, and more. The questions are intended for software testing interviews and range from basic to more advanced.
The document describes a test plan for a Waste Management Inspection Tracking System (WMITS) software. It includes:
1. An overview of what must be included in a test plan such as the test specification, test procedures for unit, integration, and validation testing.
2. A case study of testing the WMITS software requirements specification, which aims to automate waste management inspections and minimize time/paperwork.
3. Details of the testing strategy including unit testing of individual modules, integration testing by running the software at the client's location, and validation testing to verify requirements.
Foundations of Software Testing Lecture 4Iosif Itkin
This lecture is a part of the online course on Software Testing for Complex Intelligent Systems and Autonomous Vehicles. The course lectures provide the theoretical basics of testing autonomous systems based on artificial intelligence.
The fourth lecture of the course entitled Foundations of Software Testing reviews the ‘absence-of-errors fallacy’ and other principles of software testing, as well as the types and levels of software testing. The lecture also provides a fuller picture of the understanding of test objectives and methodologies by different schools of thought within the software testing domain.
IRJET - A Valuable and Speculative Approach to Manage the Item Testing by usi...IRJET Journal
- The document discusses software testing using the Selenium automation tool. Selenium can be used to automatically test web applications across different browsers and platforms.
- It provides an overview of software testing, including the different types of testing (functional, non-functional, maintenance). It also discusses manual vs automated testing and the types of automated testing tools available.
- The key benefit of Selenium mentioned is that it allows for automated testing of web applications to ensure quality and catch errors, which is more efficient than manual testing.
This document discusses testing and evaluating software design and development. It covers various types of testing including unit testing, program testing, system testing, live testing, and quality assurance. Documentation and communication are important parts of reporting the testing process. The goal of testing is to ensure the software meets specifications, finds errors, and prevents problems.
Unit testing focuses on testing individual software modules to uncover errors. Integration testing tests interfacing between modules incrementally to isolate errors. Testing objectives are to find errors, use high probability test cases, and ensure specifications are met. Reasons to test are for correctness, efficiency, and complexity. Test oracles verify expected outputs to increase automated testing efficiency and reduce costs, though complete automation has challenges.
Software testing is a process used to validate and verify software to ensure it meets requirements, works as expected, and can be implemented successfully. There are various types of testing such as functional testing to verify features and non-functional testing to check performance. Testing methods include white-box testing which uses internal knowledge and black-box testing which treats the software as a black box. The goal of testing is to find defects so the software can be improved.
The document outlines a test plan for a Waste Management Inspection Tracking System (WMITS) software. It discusses the goals of testing, including making the software bug-free. It then describes the different types of testing that will be done, including unit, integration, validation, and high-order testing. Finally, it provides a schedule and resources for carrying out the testing.
The document discusses several process models for software development including the waterfall model, prototyping model, spiral model, incremental model, RAD model, and unified process. The waterfall model is a linear sequential model moving down in distinct phases from conception to maintenance. The prototyping model emphasizes early customer feedback through quick building of prototypes. The spiral model combines elements of the waterfall model and prototyping model with each cycle of the spiral representing a single iteration of requirements, design, coding, and testing.
The document provides an overview of a 5-week IT testing course. It discusses the aims of testing including understanding what testing is, why it is needed, and common testing methodologies. It also describes testing documentation like test plans, test cases, and traceability matrices. Finally, it covers topics like test scenarios, test case templates, levels of testing, and the bug life cycle.
In this technique, test cases are developed using the use cases of the system. A use case encompass the various actors and their interactions with the system. Use cases cover the complete transactions from start to finish. These test cases depict the actual use of software by the end user.
Testing is important to ensure software quality by validating requirements and identifying bugs. There are different types of testing such as static and dynamic testing. Static testing involves manual reviews of documents while dynamic testing executes the code. Testing can be done from different perspectives such as black box, white box, and grey box. Different testing techniques are applied at various stages like unit, integration, and system testing. Testing also aims to validate functionality as well as non-functional aspects. Domain knowledge is critical for effective manual testing.
The document discusses various software testing and evaluation techniques used to ensure software solutions meet design specifications and are free from errors. It covers topics like unit testing, integration testing, system testing, black box and white box testing, test data generation, benchmarking, and quality assurance.
Dedicated Testing Team Available for Hire.
Best Suitable Engagement Model as per your Requirement
1. Project to Project
2. Per Hour Basis
3. Per Accepted Bug Basis
Functional and Non-functional Test automationDr Ganesh Iyer
What are the advantages of test automation? What are different automation considerations? what are various tools used in practice? What are various non-functional test automation dimensions?
The document outlines a test plan for a Waste Management Inspection Tracking System (WMITS) software. It includes sections on test scope and objectives, interfaces to be tested, testing strategies including unit, integration, validation and high-order testing, a test schedule, and resources and staffing. The testing aims to minimize bugs and defects by thoroughly testing all components, functions, and the integrated system prior to release.
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What you will learn in this second section
Software Testing Methodologies. Waterfall, V-Model and Iterative
What is unity or component system testing
What is integration, system and acceptance means
Differences between functional and non-functional testing
What is a structural testing
Change-related testing
Maintenance testing
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Testing is the process of evaluating a system or its components to identify differences between expected and actual results. It involves executing a system to identify gaps, errors, or missing requirements. There are different types of testing such as unit testing, integration testing, system testing, and acceptance testing. Testing can be manual, automated, functional, or non-functional. Functional testing evaluates system functionality while non-functional testing evaluates attributes like performance and security. Common non-functional test types are load testing and stress testing which analyze a system's behavior under different load conditions.
Testing is the process of evaluating a system or its components to identify errors or gaps between expected and actual results. It can be done manually or through automation. There are different types of testing like unit testing, integration testing, system testing, and acceptance testing. Testing also includes functional testing to check system requirements and non-functional testing to evaluate performance. Key aspects of testing include the software development life cycle (SDLC) and different models like waterfall, prototyping, incremental, spiral, and agile.
Savitha Gopal Rao is a software test engineer with over 5 years of experience in manual testing. She has experience testing web applications, databases, web services, and mobile applications. She is proficient in test planning, execution, defect tracking, and reporting. She is knowledgeable in automation tools like QTP and test management tools like HPQC and TFS. She holds a B.E. in Electronics and Communication and is seeking a software test engineer position based in Bangalore, India.
1. The document discusses various software engineering process models including waterfall, prototyping, RAD, incremental, and spiral models. It describes the key phases and advantages/disadvantages of each.
2. It also covers system engineering and how software engineering occurs as part of developing larger systems. Business process engineering and product engineering are introduced for developing information systems and products respectively.
3. Key aspects of developing computer-based systems are outlined including the elements of software, hardware, people, databases, documentation and procedures.
The document discusses various aspects of risk management for projects. It describes reactive risk management where risks are addressed after occurring versus proactive risk management where formal risk analysis is performed upfront. It identifies different types of project risks and provides questions to assess risks due to factors like product size, business impact, customers, and development processes. Overall project risk management involves identifying, analyzing, planning for, and tracking risks.
This document discusses various metrics for measuring software quality and object-oriented design. It introduces McCall's quality factors triangle and describes measures, metrics, and indicators. It then discusses principles of software measurement and the measurement process. It provides examples of function-based metrics, architectural design metrics, object-oriented design metrics, and class-oriented metrics. The document aims to define different metrics and provide guidance on applying them to assess software quality.
This document discusses process and project metrics for software development. It explains that metrics are used to measure the status of ongoing projects, track risks, uncover problems, and evaluate quality. Process metrics indirectly measure the efficacy of the software development process by looking at outcomes like errors, defects, productivity, effort, and schedule adherence. Project metrics are used to minimize schedules and assess ongoing product quality. Typical metrics include effort per task, errors per review hour, and milestone dates. The document provides guidelines for using metrics and discusses different types of metrics like size-oriented, function-oriented, and object-oriented metrics.
The document discusses various techniques for software testing, including testability, what constitutes a "good" test, test case design, exhaustive vs selective testing, white-box vs black-box testing, and basis path testing. Basis path testing involves determining the cyclomatic complexity of a program's control flow graph to identify the minimum number of independent paths that need to be tested to achieve full coverage. Test cases are then designed to execute each basis path.
The document discusses object-oriented design (OOD). It aims to explain how a software design can be represented as interacting objects that manage their own state and operations. It describes the activities in the OOD process and introduces models that can be used, including the Unified Modeling Language (UML). Characteristics of OOD like encapsulation and message passing are covered. The document provides examples of concepts like objects, classes, associations, generalization and inheritance. It also discusses design of concurrent and distributed systems.
The document discusses user interface design. It covers analyzing users and tasks, designing interfaces that are easy to use, consistent and put users in control. Interface design involves understanding users, tasks and content before defining objects, actions and states. Patterns can guide layout, forms and navigation. Evaluation ensures the interface is responsive, helpful and handles errors well. The goal is an interface that is easy to understand, learn and consistent.
The document discusses the benefits of meditation for reducing stress and anxiety. Regular meditation practice can help calm the mind and body by lowering heart rate and blood pressure. Making meditation a part of a daily routine, even if just 10-15 minutes per day, can offer improvements to mood, focus, and overall well-being over time.
The document discusses concepts related to design engineering and software design quality. It covers topics like the analysis model and design model, design and quality guidelines, abstraction, architecture, patterns, modularity, information hiding, functional independence, refinement, refactoring, object-oriented design concepts, and the design model process dimension. Key points include that design should implement requirements, be readable and guide implementation, and address data, functional and behavioral domains. Design quality is achieved through recognizable architectural styles, components with good characteristics, and evolutionary implementation.
Unit 3 requirements engineering processesAzhar Shaik
This document discusses requirements engineering processes. It covers topics like feasibility studies, requirements elicitation and analysis, requirements validation, and requirements management. The key activities in requirements engineering are requirements elicitation, analysis, validation, and management. Requirements engineering involves interacting with stakeholders to understand system needs and documenting requirements. Techniques like interviews, prototyping and reviews are used to validate requirements.
The document discusses system modeling as part of the requirements engineering process. It describes different types of models used to represent systems, including context models, behavioral models, data models, and object models. Specific modeling notations are introduced, such as data flow diagrams, state machines, and entity-relationship diagrams. Examples are provided to illustrate modeling concepts for systems like an ATM, order processing, and a microwave oven. The goal of system modeling is to help analysts understand system functionality from different perspectives to communicate requirements.
Unit 2 analysis and software requirementsAzhar Shaik
The document discusses software requirements and requirements analysis. It introduces the concepts of user and system requirements and describes functional and non-functional requirements. It explains how requirements can be organized in a requirements specification document. The document outlines various topics related to requirements including problem analysis techniques, requirement specification, the components and format of a Software Requirements Specification, characteristics of a good SRS, validation methods, and the differences between functional and non-functional requirements.
This document did not contain any text to summarize. A summary requires content in order to extract the key ideas and essential information in 3 sentences or less.
The document discusses software and software engineering. It defines software as a collection of computer programs, procedures, and associated documentation and data. Software engineering is defined as the systematic approach to developing, operating, and maintaining software. The document also discusses different types of software applications and categories, the evolution of software over time, software process frameworks, and models for personal and team software processes.
Philippine Edukasyong Pantahanan at Pangkabuhayan (EPP) CurriculumMJDuyan
(𝐓𝐋𝐄 𝟏𝟎𝟎) (𝐋𝐞𝐬𝐬𝐨𝐧 𝟏)-𝐏𝐫𝐞𝐥𝐢𝐦𝐬
𝐃𝐢𝐬𝐜𝐮𝐬𝐬 𝐭𝐡𝐞 𝐄𝐏𝐏 𝐂𝐮𝐫𝐫𝐢𝐜𝐮𝐥𝐮𝐦 𝐢𝐧 𝐭𝐡𝐞 𝐏𝐡𝐢𝐥𝐢𝐩𝐩𝐢𝐧𝐞𝐬:
- Understand the goals and objectives of the Edukasyong Pantahanan at Pangkabuhayan (EPP) curriculum, recognizing its importance in fostering practical life skills and values among students. Students will also be able to identify the key components and subjects covered, such as agriculture, home economics, industrial arts, and information and communication technology.
𝐄𝐱𝐩𝐥𝐚𝐢𝐧 𝐭𝐡𝐞 𝐍𝐚𝐭𝐮𝐫𝐞 𝐚𝐧𝐝 𝐒𝐜𝐨𝐩𝐞 𝐨𝐟 𝐚𝐧 𝐄𝐧𝐭𝐫𝐞𝐩𝐫𝐞𝐧𝐞𝐮𝐫:
-Define entrepreneurship, distinguishing it from general business activities by emphasizing its focus on innovation, risk-taking, and value creation. Students will describe the characteristics and traits of successful entrepreneurs, including their roles and responsibilities, and discuss the broader economic and social impacts of entrepreneurial activities on both local and global scales.
Temple of Asclepius in Thrace. Excavation resultsKrassimira Luka
The temple and the sanctuary around were dedicated to Asklepios Zmidrenus. This name has been known since 1875 when an inscription dedicated to him was discovered in Rome. The inscription is dated in 227 AD and was left by soldiers originating from the city of Philippopolis (modern Plovdiv).
বাংলাদেশের অর্থনৈতিক সমীক্ষা ২০২৪ [Bangladesh Economic Review 2024 Bangla.pdf] কম্পিউটার , ট্যাব ও স্মার্ট ফোন ভার্সন সহ সম্পূর্ণ বাংলা ই-বুক বা pdf বই " সুচিপত্র ...বুকমার্ক মেনু 🔖 ও হাইপার লিংক মেনু 📝👆 যুক্ত ..
আমাদের সবার জন্য খুব খুব গুরুত্বপূর্ণ একটি বই ..বিসিএস, ব্যাংক, ইউনিভার্সিটি ভর্তি ও যে কোন প্রতিযোগিতা মূলক পরীক্ষার জন্য এর খুব ইম্পরট্যান্ট একটি বিষয় ...তাছাড়া বাংলাদেশের সাম্প্রতিক যে কোন ডাটা বা তথ্য এই বইতে পাবেন ...
তাই একজন নাগরিক হিসাবে এই তথ্য গুলো আপনার জানা প্রয়োজন ...।
বিসিএস ও ব্যাংক এর লিখিত পরীক্ষা ...+এছাড়া মাধ্যমিক ও উচ্চমাধ্যমিকের স্টুডেন্টদের জন্য অনেক কাজে আসবে ...
Communicating effectively and consistently with students can help them feel at ease during their learning experience and provide the instructor with a communication trail to track the course's progress. This workshop will take you through constructing an engaging course container to facilitate effective communication.
Main Java[All of the Base Concepts}.docxadhitya5119
This is part 1 of my Java Learning Journey. This Contains Custom methods, classes, constructors, packages, multithreading , try- catch block, finally block and more.
How to Setup Warehouse & Location in Odoo 17 InventoryCeline George
In this slide, we'll explore how to set up warehouses and locations in Odoo 17 Inventory. This will help us manage our stock effectively, track inventory levels, and streamline warehouse operations.
it describes the bony anatomy including the femoral head , acetabulum, labrum . also discusses the capsule , ligaments . muscle that act on the hip joint and the range of motion are outlined. factors affecting hip joint stability and weight transmission through the joint are summarized.
Chapter wise All Notes of First year Basic Civil Engineering.pptxDenish Jangid
Chapter wise All Notes of First year Basic Civil Engineering
Syllabus
Chapter-1
Introduction to objective, scope and outcome the subject
Chapter 2
Introduction: Scope and Specialization of Civil Engineering, Role of civil Engineer in Society, Impact of infrastructural development on economy of country.
Chapter 3
Surveying: Object Principles & Types of Surveying; Site Plans, Plans & Maps; Scales & Unit of different Measurements.
Linear Measurements: Instruments used. Linear Measurement by Tape, Ranging out Survey Lines and overcoming Obstructions; Measurements on sloping ground; Tape corrections, conventional symbols. Angular Measurements: Instruments used; Introduction to Compass Surveying, Bearings and Longitude & Latitude of a Line, Introduction to total station.
Levelling: Instrument used Object of levelling, Methods of levelling in brief, and Contour maps.
Chapter 4
Buildings: Selection of site for Buildings, Layout of Building Plan, Types of buildings, Plinth area, carpet area, floor space index, Introduction to building byelaws, concept of sun light & ventilation. Components of Buildings & their functions, Basic concept of R.C.C., Introduction to types of foundation
Chapter 5
Transportation: Introduction to Transportation Engineering; Traffic and Road Safety: Types and Characteristics of Various Modes of Transportation; Various Road Traffic Signs, Causes of Accidents and Road Safety Measures.
Chapter 6
Environmental Engineering: Environmental Pollution, Environmental Acts and Regulations, Functional Concepts of Ecology, Basics of Species, Biodiversity, Ecosystem, Hydrological Cycle; Chemical Cycles: Carbon, Nitrogen & Phosphorus; Energy Flow in Ecosystems.
Water Pollution: Water Quality standards, Introduction to Treatment & Disposal of Waste Water. Reuse and Saving of Water, Rain Water Harvesting. Solid Waste Management: Classification of Solid Waste, Collection, Transportation and Disposal of Solid. Recycling of Solid Waste: Energy Recovery, Sanitary Landfill, On-Site Sanitation. Air & Noise Pollution: Primary and Secondary air pollutants, Harmful effects of Air Pollution, Control of Air Pollution. . Noise Pollution Harmful Effects of noise pollution, control of noise pollution, Global warming & Climate Change, Ozone depletion, Greenhouse effect
Text Books:
1. Palancharmy, Basic Civil Engineering, McGraw Hill publishers.
2. Satheesh Gopi, Basic Civil Engineering, Pearson Publishers.
3. Ketki Rangwala Dalal, Essentials of Civil Engineering, Charotar Publishing House.
4. BCP, Surveying volume 1
2. 3/18/2009 S.Sreenivasa Rao 2
Software TestingSoftware Testing
Testing is the process of exercising aTesting is the process of exercising a
program with the specific intent of findingprogram with the specific intent of finding
errors prior to delivery to the end user.errors prior to delivery to the end user.
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3. 3/18/2009 S.Sreenivasa Rao
Test strategy provides a road map;Test strategy provides a road map;
Steps to be conductedSteps to be conducted
WhenWhen
How much effort, time, resourcesHow much effort, time, resources
Test strategyTest strategy
Test planningTest planning
Test case designTest case design
Test executionTest execution
Resultant data collection and evaluationResultant data collection and evaluation
3
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4. 3/18/2009 S.Sreenivasa Rao
Verification and ValidationVerification and Validation
V&VV&V
Testing is part of V&VTesting is part of V&V
Verification: Are we building the product right?Verification: Are we building the product right?
Software correctly implements a specificSoftware correctly implements a specific
functionfunction
Validation: Are we building the right product?Validation: Are we building the right product?
Software is traceable to customerSoftware is traceable to customer
requirementsrequirements 4
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5. 3/18/2009 S.Sreenivasa Rao 5
What Testing ShowsWhat Testing Shows
errorserrors
requirements conformancerequirements conformance
performanceperformance
an indicationan indication
of qualityof quality
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6. 3/18/2009 S.Sreenivasa Rao 6
Who Tests the Software?Who Tests the Software?
developerdeveloper independent testerindependent tester
Understands the systemUnderstands the system
but, will test "gently"but, will test "gently"
and, is driven by "delivery"and, is driven by "delivery"
Must learn about the system,Must learn about the system,
but, will attempt to break itbut, will attempt to break it
and, is driven by qualityand, is driven by quality
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7. 3/18/2009 S.Sreenivasa Rao 7
Testing StrategyTesting Strategy
unit testunit test integrationintegration
testtest
validationvalidation
testtest
systemsystem
testtest
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8. 3/18/2009 S.Sreenivasa Rao
Levels of Testing
Client Needs
Requirements
Design
Code
Acceptance Testing
System Testing
Integration Testing
Unit testing
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9. 3/18/2009 S.Sreenivasa Rao
RequirementRequirement --> high> high--order tests:order tests:
validation test, System testvalidation test, System test
DesignDesign --> Integration test> Integration test
CodeCode --> unit test> unit test
9
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10. 3/18/2009 S.Sreenivasa Rao 10
Testing StrategyTesting Strategy
We begin byWe begin by ‘‘testingtesting--inin--thethe--smallsmall’’ and move towardand move toward
‘‘testingtesting--inin--thethe--largelarge’’
For conventional softwareFor conventional software
The module (component) is our initial focusThe module (component) is our initial focus
Integration of modules followsIntegration of modules follows
For OO softwareFor OO software
our focus whenour focus when ““testing in the smalltesting in the small”” changes from anchanges from an
individual module (the conventional view) to an OO classindividual module (the conventional view) to an OO class
that encompasses attributes and operations and impliesthat encompasses attributes and operations and implies
communication and collaborationcommunication and collaboration
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11. 3/18/2009 S.Sreenivasa Rao 11
Strategic IssuesStrategic Issues
Specify product requirements in a quantifiable manner long befoSpecify product requirements in a quantifiable manner long beforere
testing.testing.
State testing objectives explicitly.State testing objectives explicitly.
Understand the users of the software and develop a profile for eUnderstand the users of the software and develop a profile for eachach
user category.user category.
Develop a testing plan that emphasizesDevelop a testing plan that emphasizes ““rapid cycle testing.rapid cycle testing.””
BuildBuild ““robustrobust”” software that is designed to test itselfsoftware that is designed to test itself
Use effective formal technical reviews as a filter prior to testUse effective formal technical reviews as a filter prior to testinging
Conduct formal technical reviews to assess the test strategy andConduct formal technical reviews to assess the test strategy and testtest
cases themselves.cases themselves.
Develop a continuous improvement approach for the testingDevelop a continuous improvement approach for the testing
process.process.
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12. 3/18/2009 S.Sreenivasa Rao 12
Unit TestingUnit Testing
modulemodule
to beto be
testedtested
test casestest cases
resultsresults
softwaresoftware
engineerengineer
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13. 3/18/2009 S.Sreenivasa Rao 13
Unit TestingUnit Testing
interfaceinterface
local data structureslocal data structures
boundary conditionsboundary conditions
independent pathsindependent paths
error handling pathserror handling paths
modulemodule
to beto be
testedtested
test casestest cases
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14. 3/18/2009 S.Sreenivasa Rao 14
Unit Test EnvironmentUnit Test Environment
ModuleModule
stubstub stubstub
driverdriver
interfaceinterface
local data structureslocal data structures
boundary conditionsboundary conditions
independent pathsindependent paths
error handling pathserror handling paths
RESULTSRESULTS
test casestest cases
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15. 3/18/2009 S.Sreenivasa Rao 15
Integration Testing StrategiesIntegration Testing Strategies
Options:Options:
•• thethe ““big bangbig bang”” approachapproach
•• an incremental construction strategyan incremental construction strategy
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16. 3/18/2009 S.Sreenivasa Rao 16
Top Down IntegrationTop Down Integration
top module is tested withtop module is tested with
stubsstubs
stubs are replaced one atstubs are replaced one at
a time, "depth first"a time, "depth first"
as new modules are integrated,as new modules are integrated,
some subset of tests is resome subset of tests is re--runrun
AA
BB
CC
DD EE
FF GG
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17. 3/18/2009 S.Sreenivasa Rao 17
BottomBottom--Up IntegrationUp Integration
drivers are replaced one at adrivers are replaced one at a
time, "depth first"time, "depth first"
worker modules are grouped intoworker modules are grouped into
builds and integratedbuilds and integrated
AA
BB
CC
DD EE
FF GG
clustercluster
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18. 3/18/2009 S.Sreenivasa Rao 18
Sandwich TestingSandwich Testing
Top modules areTop modules are
tested with stubstested with stubs
Worker modules are grouped intoWorker modules are grouped into
builds and integratedbuilds and integrated
AA
BB
CC
DD EE
FF GG
clustercluster
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19. 3/18/2009 S.Sreenivasa Rao
Regression testingRegression testing
to ensure that changes do not introduceto ensure that changes do not introduce
unintended behavior or additional errors.unintended behavior or additional errors.
In context of an integration test: reIn context of an integration test: re--
execution of some subset of testsexecution of some subset of tests
Any correctionAny correction --> change of software> change of software
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20. 3/18/2009 S.Sreenivasa Rao 20
Smoke TestingSmoke Testing
A common approach for creatingA common approach for creating ““daily buildsdaily builds”” for product softwarefor product software
Smoke testing steps:Smoke testing steps:
Software components that have been translated into code are inteSoftware components that have been translated into code are integratedgrated
into ainto a ““build.build.””
A build includes all data files, libraries, reusable modules, anA build includes all data files, libraries, reusable modules, andd
engineered components that are required to implement one or moreengineered components that are required to implement one or more
product functions.product functions.
A series of tests is designed to expose errors that will keep thA series of tests is designed to expose errors that will keep the builde build
from properly performing its function.from properly performing its function.
The intent should be to uncoverThe intent should be to uncover ““show stoppershow stopper”” errors that have theerrors that have the
highest likelihood of throwing the software project behind schedhighest likelihood of throwing the software project behind schedule.ule.
The build is integrated with other builds and the entire productThe build is integrated with other builds and the entire product (in its(in its
current form) is smoke tested daily.current form) is smoke tested daily.
The integration approach may be top down or bottomThe integration approach may be top down or bottom up.up.
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21. 3/18/2009 S.Sreenivasa Rao
Identify critical modulesIdentify critical modules
Address several software requirementsAddress several software requirements
Has a high level of control (high in the programHas a high level of control (high in the program
structure)structure)
Is complex or error proneIs complex or error prone
Has definite performance requirementsHas definite performance requirements
21
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22. 3/18/2009 S.Sreenivasa Rao 22
ObjectObject--Oriented TestingOriented Testing
testing strategy changestesting strategy changes
the concept of thethe concept of the ‘‘unitunit’’ broadens due to encapsulationbroadens due to encapsulation
integration focuses on classes and their executionintegration focuses on classes and their execution
validation uses conventional black box methodsvalidation uses conventional black box methods
test case design draws on conventional methods, buttest case design draws on conventional methods, but
also encompasses special featuresalso encompasses special features
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23. 3/18/2009 S.Sreenivasa Rao 23
OOT StrategyOOT Strategy
class testing is the equivalent of unit testingclass testing is the equivalent of unit testing
operations within the class are testedoperations within the class are tested
the state behavior of the class is examinedthe state behavior of the class is examined
integration applied three different strategiesintegration applied three different strategies
threadthread--based testingbased testing——integrates the set of classesintegrates the set of classes
required to respond to one input or eventrequired to respond to one input or event
useuse--based testingbased testing——integrates the set of classes requiredintegrates the set of classes required
to respond to one use caseto respond to one use case
cluster testingcluster testing——integrates the set of classes required tointegrates the set of classes required to
demonstrate one collaborationdemonstrate one collaboration
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24. 3/18/2009 S.Sreenivasa Rao
Validation TestingValidation Testing
Validation succeeds when software functions in aValidation succeeds when software functions in a
manner that can be reasonably expected by themanner that can be reasonably expected by the
customer.customer.
Reasonable expectation are defined in the SoftwareReasonable expectation are defined in the Software
Requirement SpecificationRequirement Specification
FunctionalFunctional
BehavioralBehavioral
PerformancePerformance
DocumentationDocumentation
UsabilityUsability ……..
Alpha/Beta testingAlpha/Beta testing
Focus is on customer usageFocus is on customer usage
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25. 3/18/2009 S.Sreenivasa Rao 25
High Order Testing:High Order Testing:
System testingSystem testingSystem testingSystem testing
Focus is on system integrationFocus is on system integration
Recovery testingRecovery testing
forces the software to fail in a variety of ways andforces the software to fail in a variety of ways and
verifies that recovery is properly performedverifies that recovery is properly performed
Automatic: reAutomatic: re--initialization, check pointing, datainitialization, check pointing, data
recovery, restartrecovery, restart
By human intervention ; meanBy human intervention ; mean--timetime--toto--repairrepair
Security testingSecurity testing
verifies that protection mechanisms built into a systemverifies that protection mechanisms built into a system
will, in fact, protect it from improper penetrationwill, in fact, protect it from improper penetration
Stress testingStress testing
executes a system in a manner that demands resourcesexecutes a system in a manner that demands resources
in abnormal quantity, frequency, or volumein abnormal quantity, frequency, or volume
Performance TestingPerformance Testing
test the runtest the run--time performance of software within thetime performance of software within the
context of an integrated systemcontext of an integrated system
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26. 3/18/2009 S.Sreenivasa Rao 26
Debugging:Debugging:
A Diagnostic ProcessA Diagnostic Process
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27. 3/18/2009 S.Sreenivasa Rao 27
The Debugging ProcessThe Debugging Process
test casestest cases
resultsresults
DebuggingDebugging
suspectedsuspected
causescauses
identifiedidentified
causescauses
correctionscorrections
regressionregression
teststests
new testnew test
casescases
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28. 3/18/2009 S.Sreenivasa Rao 28
Debugging EffortDebugging Effort
time requiredtime required
to diagnose theto diagnose the
symptom andsymptom and
determine thedetermine the
causecause
time requiredtime required
to correct the errorto correct the error
and conductand conduct
regression testsregression tests
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29. 3/18/2009 S.Sreenivasa Rao 29
Symptoms & CausesSymptoms & Causes
symptomsymptom
causecause
symptom and cause may besymptom and cause may be
geographically separatedgeographically separated
symptom may disappear whensymptom may disappear when
another problem is fixedanother problem is fixed
cause may be due to acause may be due to a
combination of noncombination of non--errorserrors
cause may be due to a systemcause may be due to a system
or compiler erroror compiler error
cause may be due tocause may be due to
assumptions that everyoneassumptions that everyone
believesbelieves
symptom may be intermittentsymptom may be intermittent
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30. 3/18/2009 S.Sreenivasa Rao
Debugging tacticsDebugging tactics
Brute forceBrute force
Dump the memoryDump the memory
BacktrackingBacktracking
Start from presence of error, go backward in the code manuallyStart from presence of error, go backward in the code manually
Cause eliminationCause elimination
Cause hypothesisCause hypothesis ……
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31. 3/18/2009 S.Sreenivasa Rao 31
Consequences of BugsConsequences of Bugs
damagedamage
mildmild
annoyingannoying
disturbingdisturbing
seriousserious
extremeextreme
catastrophiccatastrophic
infectiousinfectious
Bug TypeBug Type
Bug Categories:Bug Categories: functionfunction--related bugs,related bugs,
systemsystem--related bugs, data bugs, coding bugs,related bugs, data bugs, coding bugs,
design bugs, documentation bugs, standardsdesign bugs, documentation bugs, standards
violations, etc.violations, etc.
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32. 3/18/2009 S.Sreenivasa Rao 32
Debugging: Final ThoughtsDebugging: Final Thoughts
thinkthink about theabout the
symptom you're seeing.symptom you're seeing.
Use toolsUse tools (e.g., dynamic debugger) to gain(e.g., dynamic debugger) to gain
more insight.more insight.
get helpget help from someone else.from someone else.
Be absolutely sure toBe absolutely sure to conduct regression testsconduct regression tests
when you do "fix" the bug.when you do "fix" the bug.
1.1.
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3.3.
4.4.
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