Show course GitHub link on detail page

Author: alexeygrigorev

courses/templates/courses/course.html

@@ -23,6 +23,14 @@ <h1 class="text-3xl font-semibold leading-tight tracking-normal md:text-4xl">
         <i class="fas fa-user-plus"></i> Register
       </a>
     {% endif %}
+    {% if course.github_repo_url %}
+      <a href="{{ course.github_repo_url }}"
+         target="_blank"
+         rel="noopener noreferrer"
+         class="primer-button primer-button-secondary whitespace-nowrap">
+        <i class="fab fa-github" aria-hidden="true"></i> GitHub
+      </a>
+    {% endif %}
     {% if course.first_homework_scored %}
       <a href="{% url 'leaderboard' course.slug %}" class="primer-button primer-button-secondary whitespace-nowrap">
         <i class="fas fa-trophy"></i> Course leaderboard

courses/tests/test_course.py

@@ -190,6 +190,26 @@ def test_course_detail_shows_registration_url(self):
             "https://courses.datatalks.club/test-course/register",
         )
 
+    def test_course_detail_shows_github_repo_url(self):
+        self.course.github_repo_url = (
+            "https://github.com/DataTalksClub/test-course"
+        )
+        self.course.save()
+
+        url = reverse(
+            "course", kwargs={"course_slug": self.course.slug}
+        )
+
+        response = self.client.get(url)
+
+        self.assertEqual(response.status_code, 200)
+        self.assertContains(response, "fab fa-github")
+        self.assertContains(response, "GitHub")
+        self.assertContains(
+            response,
+            "https://github.com/DataTalksClub/test-course",
+        )
+
     def test_course_detail_shows_calendar_feed_link(self):
         url = reverse(
             "course", kwargs={"course_slug": self.course.slug}