Merge pull request #178 from rbu/make-undefined-steps-fail

Use assert_raises instead of incorrect try / assert / except

tests/unit/test_step_runner.py

@@ -440,24 +440,14 @@ def test_failing_behave_as_step_fails():
 def test_undefined_behave_as_step_doesnt_pass():
     'When a step definition calls an undefined step definition with behave_as, that step should not be marked as success.'
     runnable_step = Step.from_string('Given I have a step which calls the "undefined step" step with behave_as')
-    try:
-        runnable_step.run(True)
-        assert False, "Undefined step should raise exception"
-    except:
-        pass
-
+    assert_raises(AssertionError, runnable_step.run, True)
     assert_false(runnable_step.passed)
 
 @with_setup(step_runner_environ)
 def test_undefined_behave_as_step_fails():
     'When a step definition calls an undefined step definition with behave_as, that step should be marked a failure.'
     runnable_step = Step.from_string('Given I have a step which calls the "undefined step" step with behave_as')
-    try:
-        runnable_step.run(True)
-        assert False, "Undefined step should raise exception"
-    except Exception, e:
-        pass
-
+    assert_raises(AssertionError, runnable_step.run, True)
     assert runnable_step.failed
 
 @with_setup(step_runner_environ)