Fixed multiple textbooks links to only last uploaded textbook.

TNL-1304

common/lib/xmodule/xmodule/tabs.py

@@ -558,7 +558,9 @@ class TextbookTabs(TextbookTabsBase):
             yield SingleTextbookTab(
                 name=textbook.title,
                 tab_id='textbook/{0}'.format(index),
-                link_func=lambda course, reverse_func: reverse_func('book', args=[course.id.to_deprecated_string(), index]),
+                link_func=lambda course, reverse_func, index=index: reverse_func(
+                    'book', args=[course.id.to_deprecated_string(), index]
+                ),
             )
 
 
@@ -578,7 +580,9 @@ class PDFTextbookTabs(TextbookTabsBase):
             yield SingleTextbookTab(
                 name=textbook['tab_title'],
                 tab_id='pdftextbook/{0}'.format(index),
-                link_func=lambda course, reverse_func: reverse_func('pdf_book', args=[course.id.to_deprecated_string(), index]),
+                link_func=lambda course, reverse_func, index=index: reverse_func(
+                    'pdf_book', args=[course.id.to_deprecated_string(), index]
+                ),
             )
 
 
@@ -598,7 +602,9 @@ class HtmlTextbookTabs(TextbookTabsBase):
             yield SingleTextbookTab(
                 name=textbook['tab_title'],
                 tab_id='htmltextbook/{0}'.format(index),
-                link_func=lambda course, reverse_func: reverse_func('html_book', args=[course.id.to_deprecated_string(), index]),
+                link_func=lambda course, reverse_func, index=index: reverse_func(
+                    'html_book', args=[course.id.to_deprecated_string(), index]
+                ),
             )
 
 

common/test/acceptance/fixtures/course.py

@@ -137,6 +137,7 @@ class CourseFixture(XBlockContainerFixture):
         self._updates = []
         self._handouts = []
         self._assets = []
+        self._textbooks = []
         self._advanced_settings = {}
         self._course_key = None
 
@@ -165,6 +166,12 @@ class CourseFixture(XBlockContainerFixture):
         """
         self._assets.extend(asset_name)
 
+    def add_textbook(self, book_title, chapters):
+        """
+        Add textbook to the list of textbooks to be added when the install method is called.
+        """
+        self._textbooks.append({"chapters": chapters, "tab_title": book_title})
+
     def add_advanced_settings(self, settings):
         """
         Adds advanced settings to be set on the course when the install method is called.
@@ -181,6 +188,7 @@ class CourseFixture(XBlockContainerFixture):
         self._create_course()
         self._install_course_updates()
         self._install_course_handouts()
+        self._install_course_textbooks()
         self._configure_course()
         self._upload_assets()
         self._add_advanced_settings()
@@ -352,6 +360,21 @@ class CourseFixture(XBlockContainerFixture):
                 raise FixtureError('Could not upload {asset_name} with {url}. Status code: {code}'.format(
                     asset_name=asset_name, url=url, code=upload_response.status_code))
 
+    def _install_course_textbooks(self):
+        """
+        Add textbooks to the course, if any are configured.
+        """
+        url = STUDIO_BASE_URL + '/textbooks/' + self._course_key
+
+        for book in self._textbooks:
+            payload = json.dumps(book)
+            response = self.session.post(url, headers=self.headers, data=payload)
+
+            if not response.ok:
+                raise FixtureError(
+                    "Could not add book to course: {0} with {1}.  Status was {2}".format(
+                        book, url, response.status_code))
+
     def _add_advanced_settings(self):
         """
         Add advanced settings.

common/test/acceptance/tests/lms/test_lms.py

@@ -496,6 +496,46 @@ class HighLevelTabTest(UniqueCourseTest):
             self.assertIn(expected, actual_items)
 
 
+class PDFTextBooksTabTest(UniqueCourseTest):
+    """
+    Tests that verify each of the textbook tabs available within a course.
+    """
+
+    def setUp(self):
+        """
+        Initialize pages and install a course fixture.
+        """
+        super(PDFTextBooksTabTest, self).setUp()
+
+        self.course_info_page = CourseInfoPage(self.browser, self.course_id)
+        self.tab_nav = TabNavPage(self.browser)
+
+        # Install a course with TextBooks
+        course_fix = CourseFixture(
+            self.course_info['org'], self.course_info['number'],
+            self.course_info['run'], self.course_info['display_name']
+        )
+
+        # Add PDF textbooks to course fixture.
+        for i in range(1, 3):
+            course_fix.add_textbook("PDF Book {}".format(i), [{"title": "Chapter Of Book {}".format(i), "url": ""}])
+
+        course_fix.install()
+
+        # Auto-auth register for the course
+        AutoAuthPage(self.browser, course_id=self.course_id).visit()
+
+    def test_verify_textbook_tabs(self):
+        """
+        Test multiple pdf textbooks loads correctly in lms.
+        """
+        self.course_info_page.visit()
+
+        # Verify each PDF textbook tab by visiting, it will fail if correct tab is not loaded.
+        for i in range(1, 3):
+            self.tab_nav.go_to_tab("PDF Book {}".format(i))
+
+
 class VideoTest(UniqueCourseTest):
     """
     Navigate to a video in the courseware and play it.

lms/djangoapps/courseware/tests/test_tabs.py

@@ -11,12 +11,12 @@ from opaque_keys.edx.locations import SlashSeparatedCourseKey
 
 from courseware.courses import get_course_by_id
 from courseware.tests.helpers import get_request_for_user, LoginEnrollmentTestCase
+from xmodule import tabs
 from xmodule.modulestore.tests.django_utils import (
     TEST_DATA_MIXED_TOY_MODULESTORE, TEST_DATA_MIXED_CLOSED_MODULESTORE
 )
 from courseware.views import get_static_tab_contents, static_tab
 from student.tests.factories import UserFactory
-from xmodule.tabs import CourseTabList
 from xmodule.modulestore.tests.django_utils import ModuleStoreTestCase
 from xmodule.modulestore.tests.factories import CourseFactory, ItemFactory
 
@@ -59,7 +59,7 @@ class StaticTabDateTestCase(LoginEnrollmentTestCase, ModuleStoreTestCase):
     def test_get_static_tab_contents(self):
         course = get_course_by_id(self.toy_course_key)
         request = get_request_for_user(UserFactory.create())
-        tab = CourseTabList.get_tab_by_slug(course.tabs, 'resources')
+        tab = tabs.CourseTabList.get_tab_by_slug(course.tabs, 'resources')
 
         # Test render works okay
         tab_content = get_static_tab_contents(request, course, tab)
@@ -170,3 +170,55 @@ class EntranceExamsTabsTestCase(LoginEnrollmentTestCase, ModuleStoreTestCase):
             self.assertEqual(course_tab_list[0]['tab_id'], 'courseware')
             self.assertEqual(course_tab_list[0]['name'], 'Entrance Exam')
             self.assertEqual(course_tab_list[1]['tab_id'], 'instructor')
+
+
+@override_settings(MODULESTORE=TEST_DATA_MIXED_TOY_MODULESTORE)
+class TextBookTabsTestCase(LoginEnrollmentTestCase, ModuleStoreTestCase):
+    """
+    Validate tab behavior when dealing with textbooks.
+    """
+
+    def setUp(self):
+        self.course = CourseFactory.create()
+        self.set_up_books(2)
+        self.course.tabs = [
+            tabs.CoursewareTab(),
+            tabs.CourseInfoTab(),
+            tabs.TextbookTabs(),
+            tabs.PDFTextbookTabs(),
+            tabs.HtmlTextbookTabs(),
+        ]
+        self.setup_user()
+        self.enroll(self.course)
+        self.num_textbook_tabs = sum(1 for tab in self.course.tabs if isinstance(tab, tabs.TextbookTabsBase))
+        self.num_textbooks = self.num_textbook_tabs * len(self.books)
+
+    def set_up_books(self, num_books):
+        """Initializes the textbooks in the course and adds the given number of books to each textbook"""
+        self.books = [MagicMock() for _ in range(num_books)]
+        for book_index, book in enumerate(self.books):
+            book.title = 'Book{0}'.format(book_index)
+        self.course.textbooks = self.books
+        self.course.pdf_textbooks = self.books
+        self.course.html_textbooks = self.books
+
+    def test_pdf_textbook_tabs(self):
+        """
+        Test that all textbooks tab links generating correctly.
+        """
+        type_to_reverse_name = {'textbook': 'book', 'pdftextbook': 'pdf_book', 'htmltextbook': 'html_book'}
+
+        course_tab_list = get_course_tab_list(self.course, self.user)
+        num_of_textbooks_found = 0
+        for tab in course_tab_list:
+            # Verify links of all textbook type tabs.
+            if isinstance(tab, tabs.SingleTextbookTab):
+                book_type, book_index = tab.tab_id.split("/", 1)
+                expected_link = reverse(
+                    type_to_reverse_name[book_type],
+                    args=[self.course.id.to_deprecated_string(), book_index]
+                )
+                tab_link = tab.link_func(self.course, reverse)
+                self.assertEqual(tab_link, expected_link)
+                num_of_textbooks_found += 1
+        self.assertEqual(num_of_textbooks_found, self.num_textbooks)