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Automate Your Data, Free Your Mind by Aaron Swerlein

This document provides an overview of database automation using the Ruby Gem Sequel. It discusses using Sequel to connect to databases, define models and tables, and perform CRUD operations. Examples are provided for setting up connections, querying with SQL and Ruby methods, and running tests with Cucumber. Benefits covered include increased speed, coverage, and maintaining living documentation.

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Automate Your Data, Free Your Mind Aaron Swerlein
• About Me • CRUD • ETL • Testing • Benefits of Automation • Tools • Examples • Questions Contents 2
• I have a 7 year old daughter. • I enjoy playing card games (Euchre, Rummy, Uno, MTG) • Love watching movies -> /(H|B)ollywood/ • I am an identical twin. About Me 3
Introduction | CRUD 4
Introduction | ETL Flow 5 Arrange • Source file/table • Front end application Action • Stored Procedure, SQL script • Submitting form on front end Assert • Data in target
Introduction | Testing 6
Database Testing 7
Database Testing | CRUD 8 Create • New groups or users Read • Connect to database • Validate tables/views Update • Change existing groups or accesses Delete • Inability to connect
Table Testing 9
Table Testing | CRUD 10 Create • New column, constraint, relationship Read • Validate existence of table Update • Table changes Delete • Removing constraints • Removing Columns • Removing relationships
Data Testing 11
Data Testing | CRUD 12 Create • Inserted record is present Read • Can access data Update • Record is present, but original record no longer there Delete • Record no longer exists
Benefits of Automation | Time 13
Benefits of Automation | Coverage 14
Benefits of Automation | Effort 15 • Image from Bahubali
Benefits of Automation | Deployment 16
Benefits of Automation |Jenkins 17
Benefits of Automation | Jenkins 18
Benefits of Automation | Jenkins 19
Benefits of Automation | Living Documentation 20
Benefits of Automation | Persistence 21 Scenario: validating speaker at QA or the Highway When the user navigates to the qa or highway speakers webpage Then the user validates the speaker Kyle Swerlein is present
Tools
Ruby/Cucumber 23 • Ruby – Expressive language – Good flexibility • Cucumber – Allows for plain English scenarios to express requirements. – Helps bridge the developer – analyst knowledge gap
Cucumber Example 24 @regression Scenario: validating test table loaded after jobs run Given data is present in the source When job 1 is executed And job 2 is executed And job 3 is executed Then test table is loaded
Ruby Gems 25 • Active Record: – Default for Ruby on Rails – Large bulky library, includes all of functionality • Sequel: – Lighter gem – Uses adapters and plugins to add functionality to core gem • Other: – IBM_DB, OCI8, ADO
• Sequel is a RubyGem which allows a user to connect to a database. • It includes a comprehensive ORM layer for mapping records to Ruby objects and handling associated records. (Active-Record Design Pattern) • Sequel has adapters for ADO (access), IBM_DB, JDBC, MySQL, ODBC, Oracle, Hadoop, and many others Ruby Gem - Sequel 26
ORM (Object Relational Mapping) 27
• Sequel.connect() Sequel.connect(adapter: 'adapter', database: ‘database', username: 'username', password: 'password‘, port: ’port’) Sequel.connect("#{adapter}://#{username}:#{password}@#{hostname}:#{ port}/#{database}" • Sequel.ado() • $connection Sequel Connection Examples 28 Sequel.ado(conn_string: "Provider=Microsoft.ACE.OLEDB.12.0; Data Source=C:/db/test_location.accdb")
Creating Table classes 29 class TableName < Sequel::Model($oracle_connection[“database_name__table_name".to_sym]) set_primary_key :primary_key end class TableName < Sequel::Model( $oracle_connection[Sequel.qualify(“database_name”, “table_name")]) set_primary_key :primary_key end Sequel.split_symbols = true
Querying with Sequel 30 • Once connected to a Database you can query a couple of different ways. – Straight SQL statement – Sequel ruby methods
Sequel Using SQL 31 • The Sequel library has different methods which can be called passing in a SQL query. To do this, you need to call the instantiated connection object you created i.e. $connection – $connection.run(‘sql’) – $connection.fetch(‘sql’)
Sequel Using Ruby 32 where/exclude order/reverse select Joininsert update delete
SQL VS. SEQUEL | Create 33 TableName.insert(presenter_name: 'Aaron Swerlein', conference_name: 'QA or the Highway 2017', talk_time: '2017-02-27 11:05:00.000000')
SQL VS. SEQUEL | Read 34 TableClass.select(:column_a, :column_b) .where(column_a: 'text') .where(column_b: [0,9]) .group(:column_a) .order(:column_a)
SQL VS. SEQUEL | Update 35 TableName.where(presenter_name: 'Aaron Swerlein') .where(conference_name: 'QA or the Highway') .update(talk_time: '2018-02-27 11:05:00.000000')
SQL VS. SEQUEL | Delete 36 TableName.where(presenter_name: 'Aaron Swerlein') .where(conference_name: 'QA or the Highway').delete
Helpful Sequel library 37 • A built in Sequel library which is very useful is the inflector library. This allows for basic string manipulations which can make testing easier. Here are some examples and usages. method input output camelize/camelcase ‘test_class’ ‘TestClass’ constantize ‘test_class’ TestClass underscore ‘TestClass’ ‘test_class’
Examples
Test Samples: Ruby 39
Automation Demo 40
Helpful links 41 http://sequel.jeremyevans.net/rdoc/ https://github.com/jeremyevans/sequel https://github.com/jeremyevans/sequel/blob/master/doc/querying.rdoc https://twin.github.io/ode-to-sequel/
Questions 42
Contact Information 43 • Email – aswerlein511@gmail.com • LinkedIn – https://www.linkedin.com/in/aaron-swerlein-160b5269 • GitHub – https://github.com/aswerlein511/SequelATDDDemo
Version 44 DATE AUTHOR VERSION REASON 01/17/2017 Aaron Swerlein 1.0 Created document /draft