Add Background integration test

tests/integration/features/Background.feature

@@ -0,0 +1,94 @@
+Feature: Support a Feature Background
+    In order to be Gherkin compatible
+    radish supports the Background block
+    in a Feature.
+
+    Scenario: A Background is ran before a Scenario
+        Given the Feature File "background.feature"
+            """
+            Feature: Some Feature
+
+                Background:
+                    Given the setup is done
+
+                Scenario: a fancy Example
+                    Then the setup has been done
+            """
+        And the base dir module "steps.py"
+            """
+            from radish import given, then
+
+            @given("the setup is done")
+            def do_setup(step):
+                step.context.setup = True
+
+
+            @then("the setup has been done")
+            def expect_setup_done(step):
+                assert step.context.setup
+            """
+        When the "background.feature" is run
+        Then the exit code should be 0
+
+    Scenario: The Scenario Hook is run before the Background Steps
+        Given the Feature File "background.feature"
+            """
+            Feature: Some Feature
+
+                Background:
+                    Given the setup is done
+
+                Scenario: a fancy Example
+                    Then the setup has been done
+            """
+        And the base dir module "steps.py"
+            """
+            from radish import given, then, before
+
+            @before.each_scenario()
+            def before_scenario(scenario):
+                scenario.context.setup = None
+
+
+            @given("the setup is done")
+            def do_setup(step):
+                assert step.context.setup is None
+                step.context.setup = True
+
+
+            @then("the setup has been done")
+            def expect_setup_done(step):
+                assert step.context.setup
+            """
+        When the "background.feature" is run
+        Then the exit code should be 0
+
+    Scenario: Each Scenario has it's own copy of the Background
+        Given the Feature File "background.feature"
+            """
+            Feature: Some Feature
+
+                Background:
+                    Given the setup is done
+
+                Scenario: First Scenario
+                    Then the setup has been done
+
+                Scenario: Second Scenario
+            """
+        And the base dir module "steps.py"
+            """
+            from radish import given, then
+
+            @given("the setup is done")
+            def do_setup(step):
+                assert not hasattr(step.context, "setup")
+                step.context.setup = True
+
+
+            @then("the setup has been done")
+            def expect_setup_done(step):
+                assert step.context.setup
+            """
+        When the "background.feature" is run
+        Then the exit code should be 0