Add behat feature for anonymous mode

Author: justusdieckmann

tests/behat/anonymous.feature

@@ -0,0 +1,38 @@
+@mod @mod_moodleoverflow @javascript
+Feature: Use moodleoverflow anonymously
+
+  Background:
+    Given the following "users" exist:
+      | username | firstname | lastname | email                |
+      | teacher1 | Teacher   | 1        | teacher1@example.com |
+      | student1 | Student   | 1        | student1@example.com |
+    And the following "courses" exist:
+      | fullname | shortname | category |
+      | Course 1 | C1        | 0        |
+    And the following "course enrolments" exist:
+      | user     | course | role           |
+      | teacher1 | C1     | editingteacher |
+      | student1 | C1     | student        |
+    And the following "activity" exists:
+      | activity  | moodleoverflow           |
+      | course    | C1                       |
+      | name      | Test moodleoverflow name |
+      | anonymous | 2                        |
+
+  @_file_upload
+  Scenario: Other people should not see the questioners name in anonymous mode, not even as file author.
+    Given I am on the "Test moodleoverflow name" "Activity" page logged in as "student1"
+    And I press "Add a new discussion topic"
+    And I set the following fields to these values:
+      | Subject | This is Nina |
+      | Message | She is nice. |
+    And I upload "mod/moodleoverflow/tests/fixtures/NH.jpg" file to "Attachment" filemanager
+    And I press "Post to forum"
+    Then I should see "Anonymous (You)"
+    When I am on the "Test moodleoverflow name" "Activity" page logged in as "teacher1"
+    And I follow "This is Nina"
+    Then I should not see "Student 1"
+    And I should see "Questioner"
+    Given I follow "Edit"
+    And I click on "NH.jpg" "link"
+    Then the field "Author" matches value "Anonymous"