behave example

example_steps.py

# -- FILE: features/steps/example_steps.py
from behave import given, when, then, step
import time

@given('we have behave installed')
def step_impl(context):
    time.sleep(1)

@when('we implement {number:d} tests')
def step_impl(context, number):  # -- NOTE: number is converted into integer
    assert number > 1 or number == 0
    context.tests_count = number
    time.sleep(1)

@then('behave will test them for us!')
def step_impl(context):
    assert context.failed is False
    assert context.tests_count >= 0
    time.sleep(1)

@then("behave will yell and scream")
def step_impl(context):
    time.sleep(1)
    assert False

stdout.txt

Feature: Showing off behave # features/example.feature:2

  Scenario: Run a simple test          # features/example.feature:4
    Given we have behave installed     # features/steps/example_steps.py:5 1.001s
    When we implement 5 tests          # features/steps/example_steps.py:9 1.001s
    Then behave will test them for us! # features/steps/example_steps.py:15 1.001s

  Scenario: Run another simple test  # features/example.feature:9
    Given we have behave installed   # features/steps/example_steps.py:5 1.001s
    When we implement 0 tests        # features/steps/example_steps.py:9 1.001s
    Then behave will yell and scream # features/steps/example_steps.py:21 1.001s
      Traceback (most recent call last):
        File "/usr/local/lib/python2.7/dist-packages/behave/model.py", line 1456, in run
          match.run(runner.context)
        File "/usr/local/lib/python2.7/dist-packages/behave/model.py", line 1903, in run
          self.func(context, *args, **kwargs)
        File "features/steps/example_steps.py", line 24, in step_impl
          assert False
      AssertionError



Failing scenarios:
  features/example.feature:9  Run another simple test

0 features passed, 1 failed, 0 skipped
1 scenario passed, 1 failed, 0 skipped
5 steps passed, 1 failed, 0 skipped, 0 undefined
Took 0m6.007s

steps

# -- FILE: features/example.feature
Feature: Showing off behave

  Scenario: Run a simple test
    Given we have behave installed
     When we implement 5 tests
     Then behave will test them for us!

  Scenario: Run another simple test
    Given we have behave installed
     When we implement 0 tests
     Then behave will yell and scream