Add tests for expected archival behavior

Author: danielbachhuber

features/dist-archive.feature

@@ -1,10 +1,22 @@
 Feature: Generate a distribution archive of a project
 
-  Scenario: WP-CLI loads for your tests
+  Scenario: Generates a ZIP archive by default
     Given a WP install
 
-    When I run `wp eval 'echo "Hello world.";'`
-    Then STDOUT should contain:
-      """
-      Hello world.
-      """
+    When I run `wp scaffold plugin hello-world`
+    Then the wp-content/plugins/hello-world directory should exist
+    And the wp-content/plugins/hello-world/hello-world.php file should exist
+    And the wp-content/plugins/hello-world/.travis.yml file should exist
+    And the wp-content/plugins/hello-world/bin directory should exist
+
+    When I run `wp dist-archive wp-content/plugins/hello-world`
+    Then the wp-content/plugins/hello-world.zip file should exist
+
+    When I run `wp plugin delete hello-world`
+    Then the wp-content/plugins/hello-world directory should not exist
+
+    When I run `wp plugin install wp-content/plugins/hello-world.zip`
+    Then the wp-content/plugins/hello-world directory should exist
+    And the wp-content/plugins/hello-world/hello-world.php file should exist
+    And the wp-content/plugins/hello-world/.travis.yml file should not exist
+    And the wp-content/plugins/hello-world/bin directory should not exist