behave is behaviour-driven development, Python style
Behavior-driven development (or BDD) is an agile software development technique that encourages collaboration between developers, QA and non-technical or business participants in a software project.
behave uses tests written in a natural language style, backed up by Python code.
First, install *behave*.
Now make a directory called “example”. In that directory create a file called “example.feature” containing:
Feature: showing off behave Scenario: run a simple test Given we have behave installed when we implement a test then behave will test it for us!
Make a new directory called “example/steps”. In that directory create a file called “example.py” containing:
from behave import * @given('we have behave installed') def impl(context): pass @when('we implement a test') def impl(context): assert True is not False @then('behave will test it for us!') def impl(context): assert context.failed is False
% behave Feature: showin off behave # example/example.feature:1 Scenario: run a simple test # example/example.feature:3 Given we have behave installed # example/steps/example.py:3 When we implement a test # example/steps/example.py:7 Then behave will test it for us! # example/steps/example.py:11 1 feature passed, 0 failed, 0 skipped 1 scenario passed, 0 failed, 0 skipped 3 steps passed, 0 failed, 0 skipped, 0 undefined
Download from http://pypi.python.org/pypi/behave
Version 1.2.2 - August 21, 2012
- Fix for an error when an assertion message contains Unicode characters.
- Don’t repr() the step text in snippets to avoid turning Unicode text into backslash hell.
Version 1.2.1 - August 19, 2012
- Fixes for JSON output.
- Move summary reporter and snippet output to stderr.
Version 1.2.0 - August 18, 2012
- Changed step name provided in snippets to avoid issues with the @step decorator.
- Use setup to create console scripts.
- Fixed installation on Windows.
- Fix ANSI escape sequences for cursor movement and text colourisation.
- Fixes for various command-line argument issues.
- Only print snippets once per unique step.
- Reworked logging capture.
- Fixes for dry-run mode.
- General fixes.
Version 1.1.0 - January 23, 2012
- Context variable now contains current configuration.
- Context values can now be tested for (name in context) and deleted.
- __file__ now available inside step definition files.
- Fixes for various formatting issues.
- Add support for configuration files.
- Add finer-grained controls for various things like log capture, coloured output, etc.
- Fixes for tag handling.
- Various documentation enhancements, including an example of full-stack testing with Django thanks to David Eyk.
- Split reports into a set of modules, add junit output.
- Added work-in-progress (“wip”) mode which is useful when developing new code or new tests. See documentation for more details.
Version 1.0.0 - December 5, 2011
- Initial release
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