Handling failing tests

By default, a failing story will show:

  • A snippet of the YAML where the story failed with the failing step highlighted.
  • A stack trace from engine.py where the exception was raised.

example.story:

Failing story:
  steps:
    - Passing step
    - Failing step
    - Not executed step

engine.py:

from hitchstory import BaseEngine, no_stacktrace_for, Failure
from code_that_does_things import raise_example_exception, output, ExampleException

class Engine(BaseEngine):
    def passing_step(self):
        pass

    def failing_step(self):
        raise_example_exception("Towel not located")

    @no_stacktrace_for(ExampleException)
    def failing_step_without_stacktrace(self):
        raise_example_exception("Expected exception")

    def raise_special_failure_exception(self):
        raise Failure("Special failure exception - no stacktrace printed!")

    def step_that_will_not_run(self):
        pass
        
    def on_failure(self, result):
        pass

    def not_executed_step(self):
        pass
from hitchstory import StoryCollection
from engine import Engine
from pathquery import pathquery

story_collection = StoryCollection(pathquery(".").ext("story"), Engine())

Failure in set_up method:

story_collection.one().play()

Will output:

RUNNING Failing story in /path/to/example.story ... FAILED in 0.1 seconds.



[1]: function 'set_up'
  /path/to/engine.py


        3 : class Engine(BaseEngine):
        4 :     def set_up(self):
    --> 5 :         raise_example_exception()
        6 :



[2]: function 'raise_example_exception'
  /path/to/code_that_does_things.py


        20 :
        21 : def raise_example_exception(text=""):
    --> 22 :     raise ExampleException(text)
        23 :



code_that_does_things.ExampleException

    This is a demonstration exception docstring.

    It spreads across multiple lines.

Failure printed by default:

story_collection.one().play()

Will output:

RUNNING Failing story in /path/to/example.story ... FAILED in 0.1 seconds.

      steps:
      - Passing step
      - Failing step
      - Not executed step


[1]: function 'failing_step'
  /path/to/engine.py


        6 :
        7 :     def failing_step(self):
    --> 8 :         raise_example_exception("Towel not located")
        9 :



[2]: function 'raise_example_exception'
  /path/to/code_that_does_things.py


        20 :
        21 : def raise_example_exception(text=""):
    --> 22 :     raise ExampleException(text)
        23 :



code_that_does_things.ExampleException

    This is a demonstration exception docstring.

    It spreads across multiple lines.

Towel not located

Executable specification

Page automatically generated from failure.story.