Test to demonstrate problem with outline scenarios

tests/functional/output_features/undefined_steps/undefined_steps.feature

+Feature: Test undefined steps are displayed on console
+
+  Scenario: Scenario with undefined step
+    Given this test step passes
+    When this test step is undefined
+
+  Scenario Outline: Outline scenario with general undefined step
+    Given this test step passes
+    When this test step is undefined
+    Then <in> squared is <out>
+
+  Examples:
+  | in | out |
+  |  1 |  1  |
+  |  2 |  4  |

tests/functional/output_features/undefined_steps/undefined_steps.py

+from lettuce import step, world
+
+@step(u'this test step passes')
+def this_test_step_passes(step):
+    assert True
+
+@step(u'(.*) squared is (.*)')
+def val1_squared_is_val2(step, val1, val2):
+    pass

tests/functional/test_runner.py

@@ -1367,3 +1367,44 @@ def test_feature_missing_scenarios():
         "Features must have scenarios.\nPlease refer to the documentation "
         "available at http://lettuce.it for more information.\n" % filename
     )
+
+@with_setup(prepare_stdout)
+def test_output_with_undefined_steps_colorful():
+    "With colored output, an undefined step should be printed in sequence."
+
+    runner = Runner(feature_name('undefined_steps'), verbosity=4)
+    runner.run()
+
+    assert_stdout_lines_with_traceback(
+        '\n'
+        '\x1b[1;37mFeature: Test undefined steps are displayed on console           \x1b[1;30m# tests/functional/output_features/undefined_steps/undefined_steps.feature:1\x1b[0m\n'
+        '\n'
+        '\x1b[1;37m  Scenario: Scenario with undefined step                         \x1b[1;30m# tests/functional/output_features/undefined_steps/undefined_steps.feature:3\x1b[0m\n'
+        '\x1b[1;30m    Given this test step passes                                  \x1b[1;30m# tests/functional/output_features/undefined_steps/undefined_steps.py:4\x1b[0m\n'
+        '\x1b[A\x1b[1;32m    Given this test step passes                                  \x1b[1;30m# tests/functional/output_features/undefined_steps/undefined_steps.py:4\x1b[0m\n'
+        '\x1b[0;33m    When this test step is undefined                             \x1b[1;30m# tests/functional/output_features/undefined_steps/undefined_steps.feature:5\x1b[0m\n'
+        '\n'
+        '\x1b[1;37m  Scenario Outline: Outline scenario with general undefined step \x1b[1;30m# tests/functional/output_features/undefined_steps/undefined_steps.feature:7\x1b[0m\n'
+        '\x1b[0;36m    Given this test step passes                                  \x1b[1;30m# tests/functional/output_features/undefined_steps/undefined_steps.py:4\x1b[0m\n'
+        '\x1b[0;33m    When this test step is undefined                             \x1b[1;30m# tests/functional/output_features/undefined_steps/undefined_steps.feature:5\x1b[0m\n'
+        '\x1b[0;36m    Then <in> squared is <out>                                   \x1b[1;30m# tests/functional/output_features/undefined_steps/undefined_steps.py:8\x1b[0m\n'
+        '\n'
+        '\x1b[1;37m  Examples:\x1b[0m\n'
+        '\x1b[0;36m   \x1b[1;37m |\x1b[0;36m in\x1b[1;37m |\x1b[0;36m out\x1b[1;37m |\x1b[0;36m\x1b[0m\n'
+        '\x1b[1;32m   \x1b[1;37m |\x1b[1;32m 1 \x1b[1;37m |\x1b[1;32m 1  \x1b[1;37m |\x1b[1;32m\x1b[0m\n'
+        '\x1b[1;32m   \x1b[1;37m |\x1b[1;32m 2 \x1b[1;37m |\x1b[1;32m 4  \x1b[1;37m |\x1b[1;32m\x1b[0m\n'
+        '\n'
+        '\x1b[1;37m1 feature (\x1b[0;31m0 passed\x1b[1;37m)\x1b[0m\n'
+        '\x1b[1;37m3 scenarios (\x1b[0;31m0 passed\x1b[1;37m)\x1b[0m\n'
+        '\x1b[1;37m8 steps (\x1b[0;36m2 skipped\x1b[1;37m, \x1b[0;33m3 undefined\x1b[1;37m, \x1b[1;32m3 passed\x1b[1;37m)\x1b[0m\n'
+        '\n'
+        '\x1b[0;33mYou can implement step definitions for undefined steps with these snippets:\n'
+        '\n'
+        '# -*- coding: utf-8 -*-\n'
+        'from lettuce import step\n'
+        '\n'
+        "@step(u'When this test step is undefined')\n"
+        'def when_this_test_step_is_undefined(step):\n'
+        "    assert False, 'This step must be implemented'\x1b[0m\n"
+    )
+    
\ No newline at end of file