Index: mod/assign/feedback/editpdf/tests/behat/behat_assignfeedback_editpdf.php
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
--- mod/assign/feedback/editpdf/tests/behat/behat_assignfeedback_editpdf.php	(revision 7959ac59bc06271be27642f169a65c498100e3c7)
+++ mod/assign/feedback/editpdf/tests/behat/behat_assignfeedback_editpdf.php	(revision 7b553b7318bc855c0abd2296a811683883f4f943)
@@ -102,4 +102,37 @@
 
         $this->getSession()->wait(self::get_timeout() * 1000, "({$js})");
     }
+
+    /**
+     * Scroll down to the bottom of the page
+     *
+     * @Given /^I scroll down$/
+     */
+    public function i_scroll_down()
+    {
+        $js = ' (function() {
+    var instance = M.assignfeedback_editpdf.instance;
+    var drawingregion = instance.get_dialogue_element(".drawingregion");
+    drawingregion.set("scrollTop", parseInt(drawingregion.get("scrollHeight"), 10) - parseInt(drawingregion.get("clientHeight"), 10));
+}()); ';
+        $this->getSession()->executeScript($js);
+        sleep(1);
+    }
+
+    /**
+     * Scroll up to the beginning of the page
+     *
+     * @Given /^I scroll up$/
+     */
+    public function i_scroll_up()
+    {
+        $js = ' (function() {
+    var instance = M.assignfeedback_editpdf.instance;
+    var drawingregion = instance.get_dialogue_element(".drawingregion");
+    drawingregion.set("scrollTop", 1);
+    drawingregion.set("scrollTop", 0);
+}()); ';
+        $this->getSession()->executeScript($js);
+        sleep(1);
+    }
 }
Index: mod/assign/feedback/editpdf/tests/behat/scroll.feature
IDEA additional info:
Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP
<+>UTF-8
===================================================================
--- mod/assign/feedback/editpdf/tests/behat/scroll.feature	(revision 7b553b7318bc855c0abd2296a811683883f4f943)
+++ mod/assign/feedback/editpdf/tests/behat/scroll.feature	(revision 7b553b7318bc855c0abd2296a811683883f4f943)
@@ -0,0 +1,65 @@
+@mod @mod_assign @assignfeedback @assignfeedback_editpdf @_file_upload
+Feature: In an assignment, teacher can scroll PDF files during grading
+  As a teacher
+  I need to use the PDF editor
+
+  @javascript
+  Scenario: Submit a PDF files as a student and scroll the PDF as a teacher during grading
+    # Be sure to check out ghostscript
+    Given ghostscript is installed
+    And the following "courses" exist:
+      | fullname | shortname | category | groupmode |
+      | Course 1 | C1 | 0 | 1 |
+    And the following "users" exist:
+      | username | firstname | lastname | email |
+      | teacher1 | Teacher | 1 | teacher1@example.com |
+      | student1 | Student | 1 | student1@example.com |
+    And the following "course enrolments" exist:
+      | user | course | role |
+      | teacher1 | C1 | editingteacher |
+      | student1 | C1 | student |
+    And I log in as "teacher1"
+    And I am on "Course 1" course homepage with editing mode on
+    And I add a "Assignment" to section "1" and I fill the form with:
+      | Assignment name | Test assignment name |
+      | Description | Submit your PDF file |
+      | assignsubmission_file_enabled | 1 |
+      | Maximum number of uploaded files | 2 |
+    And I log out
+    And I log in as "student1"
+    And I am on "Course 1" course homepage
+    And I follow "Test assignment name"
+    And I press "Add submission"
+    # student uploads pdf document
+    And I upload "mod/assign/feedback/editpdf/tests/fixtures/submission.pdf" file to "File submissions" filemanager
+    And I press "Save changes"
+    And I should see "Submitted for grading"
+    And I should see "submission.pdf"
+    And I should see "Not graded"
+    And I log out
+    And I log in as "teacher1"
+    And I am on "Course 1" course homepage
+    And I follow "Test assignment name"
+    And I navigate to "View all submissions" in current page administration
+    # The teacher views the documents uploaded by the student during grading
+    And I click on "Grade" "link" in the "Submitted for grading" "table_row"
+    # The process of converting a document takes a lot of time, so be sure to wait for it to complete
+    And I wait for the complete PDF to load
+    # I see the first page of the generated document
+    And I should see "Page 1 of 2"
+    # Scrolling down to the bottom of the current page
+    And I scroll down
+    # I see the next page
+    And I should see "Page 2 of 2"
+    # Scrolling down to the bottom of the current page again
+    And I scroll down
+    # Nothing happens because i'm on the last page
+    And I should see "Page 2 of 2"
+    # Scrolling up to the beginning of the current page
+    And I scroll up
+    # I see the previous page
+    And I should see "Page 1 of 2"
+    # Scrolling up to the beginning of the current page again
+    And I scroll up
+    # Nothing happens because i'm on the first page
+    And I should see "Page 1 of 2"
\ No newline at end of file