MDL-14402 blocks: Do not show assign roles on my home

blocks/tests/behat/configure_block_throughout_site.feature

@@ -32,3 +32,27 @@ Feature: Add and configure blocks throughout the site
     And I follow "Course 1"
     # The first block matching the pattern should be top-left block
     And I should see "Comments" in the "//*[@id='region-pre' or @id='block-region-side-pre']/descendant::div[contains(concat(' ', normalize-space(@class), ' '), ' block ')]" "xpath_element"
+
+  Scenario: My home does not allow assignation of roles on blocks
+    Given the following "users" exist:
+      | username | firstname | lastname | email |
+      | manager1 | Manager | 1 | manager1@asd.com |
+    And I log in as "manager1"
+    And I click on "My home" "link" in the "Navigation" "block"
+    When I press "Customise this page"
+    Then I should not see "Assign roles in Navigation block"
+
+  Scenario: Blocks on courses can have roles assigned to them
+    Given the following "courses" exist:
+      | fullname | shortname | category |
+      | Course 1 | C1 | 0 |
+    And the following "users" exist:
+      | username | firstname | lastname | email               |
+      | teacher1 | teacher   | 1        | teacher@example.com |
+    And the following "course enrolments" exist:
+      | user     | course | role           |
+      | teacher1 | C1     | editingteacher |
+    And I log in as "teacher1"
+    And I follow "Course 1"
+    And I follow "Turn editing on"
+    Then I should see "Assign roles in Search forums block"

lib/blocklib.php

@@ -1113,7 +1113,7 @@ public function edit_controls($block) {
         }
 
         // Assign roles icon.
-        if (has_capability('moodle/role:assign', $block->context)) {
+        if ($this->page->pagetype != 'my-index' && has_capability('moodle/role:assign', $block->context)) {
             //TODO: please note it is sloppy to pass urls through page parameters!!
             //      it is shortened because some web servers (e.g. IIS by default) give
             //      a 'security' error if you try to pass a full URL as a GET parameter in another URL.