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ATTD talk with DevOpsQANJ – Jersey City – Thursday, Aug 11th 2016

Anil Jaising

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20 years of experience working in Wall Street firms as a developer, architect, delivery manager and agile coach.

Executive director @ JP Morgan, contributes articles on Agile and DevOps @ nimblebydesign.com. Speak at various industry and technology conferences.

About me

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Question every assumption– Taiichi Ohno1.Detect the abnormality2.Stop what you are doing3.Fix or correct the immediate problem4.Investigate the root cause and install a countermeasure

Stop the line at Toyota

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Testing must be independent and thus separated from development

Testing cannot start before coding is finished

Testing follows the sequence of (1) test case design, (2) test case execution, (3) test case reporting (a test waterfall)

There must be a separate test department

There must be a test manager

Testing must be “well planned”

There must be a “testing strategy” and a “master test plan”

Testing must be done at the end

Some assumptions about testing

Source: Practices for scaling lean and agile development by Craig Larman and Bas Vodde

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Developer activity: Guard your system against defects and build in quality

TDD

Write the test that fails

Write the code that passes

Refactor the code

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Testing is a team sport

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Testing is the process of executing a program to find errors

Avoid assuming testing is testing

Reference: IEEE paper by Robert Martin and Grigori Melnik

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ATDD – From user stories to business value

User Story:

As an ATM user I want to withdraw cash from the ATM machine such that the total amount left is equal to the difference between the original amount and the amount I withdrew

Original amount

withdraw Final amount

100 20 80

Examples:

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Team building examples

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ATDD – From user stories to business value

Original amount

withdraw Final amount

100 20 80

250 10 240

500 50 450

750 70 680

1000 500 500

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Demo: Code -> Design -> pass the test -> refactor the code

Download the demo code at https://github.com/aniljaising/ATTD-with-Cucumber

Source: Cucumber for Java Book by Seb Rose, Aslak Hellesoy and Matt Wynne

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Features

The glue - Step definitions

Implementation

Automation library

How Cucumber works?

Source: Cucumber for Java Book by Seb Rose, Aslak Hellesoy and Matt Wynne

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Ubiquitous language – Spec by example

Living documentation

Single source of truth

Less rework

Why Cucumber?

Source: http://cucumber.io

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Q & A