3.2. Step - 01 : Initial structure

To run behave, we need the following directory structure:

.
|-- features
|   |-- steps
|   |   `-- steps_addition.py
|   |-- environment.py
|   `-- simple-addition.feature
`-- libmath.py

The contents of the files as under for the time being.

• libmath.py

  This is the file would eventually have the logic want to test. The contents of the file as as under.

  # libmath.py
  
  # Empty for time being
  

• features/simple-addition.feature

  This file has the BDD Tests.

  # features/sample-addition.feature
  
  Feature: Simple Addition
  
      Showcase simple addition for the BDD Book.
  
      Scenario: Addition of single digit numbers
          Given I have '1' and '3'
          When I add them
          Then The result must be '4'
  
      Scenario: Addition of double digit numbers
          Given I have '70' and '29'
          When I add them
          Then The result must be '99'
  

• features/environment.py

  This file would have (in later chapters) hooks/common implementation.

  # environment.py
  # Empty for time being
  

• features/steps/steps_addition.py

  This file is mapping between features/simple-addition.feature and libmath.py. We will add implementation in this file, in later chapters.

  # features/steps/steps_addition.py
  # Empty for time being