Behaviour Driven Development in Python

Behave is a Python programming tool for Behaviour-Driven Development (BDD). BDD fosters a culture where testers, developers, business analysts, and other project stakeholders can all participate to the software development process within an Agile development framework. In summary, both technical and non-technical people contribute to the project as a whole. Behave has written tests in plain text with Python serving as the implementation language. The BDD format...
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Behave is a Python programming tool for Behaviour-Driven Development (BDD). BDD fosters a culture where testers, developers, business analysts, and other project stakeholders can all participate to the software development process within an Agile development framework.
In summary, both technical and non-technical people contribute to the project as a whole. Behave has written tests in plain text with Python serving as the implementation language.
The BDD format begins with the description of the characteristics of the software similar to a story.
It then continues with the development and carries out the following tasks −

• Developing a failing test case for characteristics.
• Implement the logic for a test to pass.
• Code refactor to fulfil the project guidelines.

There are many libraries for BDD, including the JavaScript-compatible Mocha, the Java/Ruby-compatible Cucumber, the Python-compatible Behave, and many others.
We will go into detail regarding behave in this tutorial.
Let us see a basic structure of a BDD. It mainly consists of the feature file, the step definition file, and so on.
Feature File
The feature file in Behave may look like this:
Verify book name added in library is a feature.
Verify Book name scenario
given Book information.
then confirm the book's name.
Corresponding step definition file
Following is the corresponding definition file in Behave tool −
from behave import *
@given('Book details')
def impl_bk(context):
print('Book details entered')
@then('Verify book name')
def impl_bk(context):
print('Verify book name')