Fundamentals of Testing 2

FUNDAMENTALS OF TESTING
Hoang V. Nguyen
startnewday85@gmail.com
startnewday85.blogspot.com
Dept. of Computer Science – FIT - HUA

Tester Training Course

Monitoring and control
Planning

Implementation
Analysis

Design

Closure
Execution
Evaluating
exit criteria
Reporting test result

Tester Training Course 2011

Company Level

Project Level

Test stage Level


 Run a test, it fails, fault reported
 New version of software with fault “fixed”
 Re-run the same test (i.e. re-test)
• must be exactly repeatable
• same environment, versions (except for the software
which has been intentionally changed!)
• same inputs and preconditions
 If test now passes, fault has been fixed
correctly - or has it?


 To eliminate unexpected-side effects, but
can still exist
 Are performed:
• after software changed, including faults fixed
• when environment changes, even if application
functionality not change
• for emergency fixes(possibly a subset)
 Regression test suites
• evolve over time
• are run often
• may become rather large


Question
The five parts of the fundamental test process have a
broad chronological order. Which of the options gives
three different parts in the correct order?

Impl. & exe., planning & control, analysis & design

Analysis & design, eval. exit criteria & reporting, test
closure activities;

Eval. exit criteria & reporting, impl. And exe.,
analysis and design.

Eval. exit criteria & reporting, test closure activities,
analysis and design.


Question
Which option is part of the ’implementation and
execution’ area of the fundamental test process?

Developing the tests;

Comparing actual and expected results;

Writing a test summary;

Analysing lessons learnt for future releases.


Question
As part of which test process do you determine the
exit criteria?

Test planning;

Test closure;

Evaluating exit criteria and reporting;

Test control.


Question
Which of the following is a Major task of test
implementation and execution?

Measuring and anslyzing results;

Reporting discrepancies as incidents;

Identifying test conditions or test requirements;

Assessing if more tests are needed.


Question
Which activity in the fundamental test process
creates test suites for efficent test execution?

Implementatin and execution;

Planning and control;

Analysis and design;

Test closure.


Question
What is the purpose of exit criteria?

To define when a test level is complete;

To determine when a test has completed;

To identify when a software system should be
retired;

To determine whether a test has passed.

Question
Which activities form part of test planning
i. Developing test cases
ii. Defining the overall approach to testing
iii. Assigning resources
iv. Building the test environment
v. Writing test conditions

i, ii & iv are true; iii & v are false

ii & iii are true; iv & v are false

iv & v are true; ii & iii are false

i, ii & iii are true; iv & v are false


Question
When a defect is detected and fixed then the
software should be retested to confirm that the
original defect has been successfully removed.
This called?

Regression testing;

Maintenance testing;

Confirmation testing;

None of the above.


Question
Which of the following are chracteristic of regression
testing
i. Regression testing is run Oly one
ii. Regression testing is used after fixes have been
made
iii. Regression testing is often automated
iv. Regression testing need not be maintained

ii & iv

ii & iii

i, iii & iv

iii


Question
Which of the following is true?

Confirmation testing is testing fixes to a set of
defects and regression testing is testing to establish
whether any defects have been introduced as a
result of changes;
Confirmation testing is testing to establish whether
any defects have been introduced as a result of
changes and regression testing s testing fixes to a
set of defects;

Confirmation testing and regression testing are
both testing to establish whether any defects have
been introduced as a result of changes;

Confirmation testing and regression testing are
both testing fixes to a set of defects.


Question
The different between re-testing and regression
testing is

Re-testing is running a test again; regression testing
looks for unexpected side effects

Re-testing looks for unexpected side effects;
regression testing is repeating those tests

Re-testing is done after faults are fixed; regression
testing is done earlier

Re-testing uses different environments; regression
testing uses the same environment

Re-testing is done by developer; regression testing
is done by independent testers

Demonstrate conformance to requirements

Find faults

Prove that the software is correct

Build confidence

Assess the software quality


 Goal: show that the system works
correctly
 Show that the system:
• does what it should
• doesn’t do what it shouldn’t
 Success: the system work correctly


 Goal: show that the system fails
 Show that the system:
• does what it shouldn’t
• doesn’t do what it should
 Success: the system fails


Test your own work
 Is inefficient(30%-50% faults)
 Because:
• same assumptions and thought processes
• see what you meant or want to see, not what is there
• actively want not find faults


Independence
 Levels of dependence
• None: tests designed by the person who wrote the
software
• Tests designed by a different person
• Tests designed by someone from a different
department or team (e.g. test team)
• Tests designed by someone from a different
organisation (e.g. Agency)


• The fundamental test process
• Psychology of testing


Fundamentals of Testing 2

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