add course_id to event context

common/djangoapps/track/tests/test_contexts.py

@@ -0,0 +1,44 @@
+# pylint: disable=missing-docstring,maybe-no-member
+
+from unittest import TestCase
+
+from track import contexts
+
+
+class TestContexts(TestCase):
+
+    COURSE_ID = 'test/course_name/course_run'
+    ORG_ID = 'test'
+
+    def test_course_id_from_url(self):
+        self.assert_parses_course_id_from_url('http://foo.bar.com/courses/{course_id}/more/stuff')
+
+    def assert_parses_course_id_from_url(self, format_string):
+        self.assertEquals(
+            contexts.course_context_from_url(format_string.format(course_id=self.COURSE_ID)),
+            {
+                'course_id': self.COURSE_ID,
+                'org_id': self.ORG_ID
+            }
+        )
+
+    def test_no_course_id_in_url(self):
+        self.assert_empty_context_for_url('http://foo.bar.com/dashboard')
+
+    def assert_empty_context_for_url(self, url):
+        self.assertEquals(
+            contexts.course_context_from_url(url),
+            {
+                'course_id': '',
+                'org_id': ''
+            }
+        )
+
+    def test_malformed_course_id(self):
+        self.assert_empty_context_for_url('http://foo.bar.com/courses/test')
+
+    def test_course_id_later_in_url(self):
+        self.assert_parses_course_id_from_url('http://foo.bar.com/x/y/z/courses/{course_id}')
+
+    def test_no_url(self):
+        self.assert_empty_context_for_url(None)