Adds ambiguous tests with guess mode scenario

features/docs/defining_steps/ambiguous_steps.feature

@@ -70,3 +70,39 @@ Feature: Ambiguous Steps
     4 steps (1 failed, 3 passed)
     0m0.012s
     """
+
+
+  Scenario: Ambiguous steps with guess mode
+
+    Given a file named "features/ambiguous.feature" with:
+    """
+    Feature:
+
+      Scenario:
+      * a step
+      * an ambiguous step
+    """
+    And a file named "features/step_definitions.rb" with:
+    """
+      When(/^a.*step$/) do
+        'foo'
+      end
+
+      When(/^an ambiguous step$/) do
+        'bar'
+      end
+    """
+    When I run `cucumber -g`
+    Then it should pass with exactly:
+    """
+    Feature:
+
+      Scenario:             # features/ambiguous.feature:3
+        * a step            # features/step_definitions.rb:1
+        * an ambiguous step # features/step_definitions.rb:5
+
+    1 scenario (1 passed)
+    2 steps (2 passed)
+    0m0.012s
+
+    """