MDL-80221 lang: Use fixed strings in the tests, too

course/tests/behat/course_request.feature

@@ -29,7 +29,7 @@ Feature: Users can request and approve courses
       | Course short name | Mynewcourse   |
       | Supporting information | pretty please |
     And I press "Request a course"
-    And I should see "Your course request has been saved successfully."
+    And I should see "Course request submitted."
     And I press "Continue"
     And I am on course index
     And I should not see "My new course"

enrol/self/tests/self_test.php

@@ -800,7 +800,7 @@ class self_test extends \advanced_testcase {
         ] + (array) $instance, [], $instance, $context);
 
         $this->assertArrayHasKey('password', $errors);
-        $this->assertEquals('Enrolment key matches an existing group enrolment key', $errors['password']);
+        $this->assertEquals('This enrolment key is already used as a group enrolment key.', $errors['password']);
     }
 
     /**

mod/assign/tests/behat/grading_status.feature

@@ -137,10 +137,10 @@ Feature: View the grading status of an assignment
       | Online text | I'm the student's second submission |
     And I press "Save changes"
     And I log out
-    # Teacher marks the submission again after noticing the 'Graded - follow-up submission received'.
+    # Teacher marks the submission again after noticing the 'Graded - resubmitted'.
     And I am on the "Test assignment name" "assign activity" page logged in as teacher1
     And I follow "View all submissions"
-    And I should see "Graded - follow-up submission received" in the "Student 1" "table_row"
+    And I should see "Graded - resubmitted" in the "Student 1" "table_row"
     And I wait "10" seconds
     And I click on "Grade" "link" in the "Student 1" "table_row"
     And I should see "1 of 1"

my/tests/behat/welcome.feature

@@ -29,4 +29,4 @@ Feature: Welcome message
     And I log out
     And I should see "You are not logged in" in the "page-footer" "region"
     And I log in as "admin"
-    Then I should see "Welcome back, Admin!" in the "page-header" "region"
+    Then I should see "Hi, Admin!" in the "page-header" "region"