Fixed #5405 -- Added admindocs support for reStructured text in model docstrings

Thanks elvard and gkmngrgn for work on the patch and Markus H. for review.

tests/admin_docs/tests.py

@@ -291,3 +291,110 @@ class TestModelDetailView(AdminDocsTestCase):
 
         fields = response.context_data.get('fields')
         self.assertEqual(len(fields), 2)
+
+    def test_model_docstring_renders_correctly(self):
+        summary = (
+            '<h2 class="subhead"><p>Stores information about a person, related to <a class="reference external" '
+            'href="/admindocs/models/myapp.company/">myapp.Company</a>.</p></h2>'
+        )
+        subheading = '<p><strong>Notes</strong></p>'
+        body = '<p>Use <tt class="docutils literal">save_changes()</tt> when saving this object.</p>'
+        model_body = (
+            '<dl class="docutils"><dt><tt class="'
+            'docutils literal">company</tt></dt><dd>Field storing <a class="'
+            'reference external" href="/admindocs/models/myapp.company/">'
+            'myapp.Company</a> where the person works.</dd></dl>'
+        )
+        self.assertContains(self.response, 'DESCRIPTION')
+        self.assertContains(self.response, summary, html=True)
+        self.assertContains(self.response, subheading, html=True)
+        self.assertContains(self.response, body, html=True)
+        self.assertContains(self.response, model_body, html=True)
+
+
+@unittest.skipUnless(utils.docutils_is_available, "no docutils installed.")
+class TestUtils(AdminDocsTestCase):
+    """
+    This __doc__ output is required for testing. I copied this example from
+    `admindocs` documentation. (TITLE)
+
+    Display an individual :model:`myapp.MyModel`.
+
+    **Context**
+
+    ``RequestContext``
+
+    ``mymodel``
+        An instance of :model:`myapp.MyModel`.
+
+    **Template:**
+
+    :template:`myapp/my_template.html` (DESCRIPTION)
+
+    some_metadata: some data
+
+    """
+
+    def setUp(self):
+        self.docstring = self.__doc__
+
+    def test_trim_docstring(self):
+        trim_docstring_output = utils.trim_docstring(self.docstring)
+        trimmed_docstring = (
+            'This __doc__ output is required for testing. I copied this '
+            'example from\n`admindocs` documentation. (TITLE)\n\n'
+            'Display an individual :model:`myapp.MyModel`.\n\n'
+            '**Context**\n\n``RequestContext``\n\n``mymodel``\n'
+            '    An instance of :model:`myapp.MyModel`.\n\n'
+            '**Template:**\n\n:template:`myapp/my_template.html` '
+            '(DESCRIPTION)\n\nsome_metadata: some data'
+        )
+        self.assertEqual(trim_docstring_output, trimmed_docstring)
+
+    def test_parse_docstring(self):
+        title, description, metadata = utils.parse_docstring(self.docstring)
+        docstring_title = (
+            'This __doc__ output is required for testing. I copied this example from\n'
+            '`admindocs` documentation. (TITLE)'
+        )
+        docstring_description = (
+            'Display an individual :model:`myapp.MyModel`.\n\n'
+            '**Context**\n\n``RequestContext``\n\n``mymodel``\n'
+            '    An instance of :model:`myapp.MyModel`.\n\n'
+            '**Template:**\n\n:template:`myapp/my_template.html` '
+            '(DESCRIPTION)'
+        )
+        self.assertEqual(title, docstring_title)
+        self.assertEqual(description, docstring_description)
+        self.assertEqual(metadata, {'some_metadata': 'some data'})
+
+    def test_title_output(self):
+        title, description, metadata = utils.parse_docstring(self.docstring)
+        title_output = utils.parse_rst(title, 'model', 'model:admindocs')
+        self.assertIn('TITLE', title_output)
+
+        title_rendered = (
+            '<p>This __doc__ output is required for testing. I copied this '
+            'example from\n<a class="reference external" '
+            'href="/admindocs/models/admindocs/">admindocs</a> documentation. '
+            '(TITLE)</p>\n'
+        )
+        self.assertHTMLEqual(title_output, title_rendered)
+
+    def test_description_output(self):
+        title, description, metadata = utils.parse_docstring(self.docstring)
+        description_output = utils.parse_rst(description, 'model', 'model:admindocs')
+
+        description_rendered = (
+            '<p>Display an individual <a class="reference external" '
+            'href="/admindocs/models/myapp.mymodel/">myapp.MyModel</a>.</p>\n'
+            '<p><strong>Context</strong></p>\n<p><tt class="docutils literal">'
+            'RequestContext</tt></p>\n<dl class="docutils">\n<dt><tt class="'
+            'docutils literal">mymodel</tt></dt>\n<dd>An instance of <a class="'
+            'reference external" href="/admindocs/models/myapp.mymodel/">'
+            'myapp.MyModel</a>.</dd>\n</dl>\n<p><strong>Template:</strong></p>'
+            '\n<p><a class="reference external" href="/admindocs/templates/'
+            'myapp/my_template.html/">myapp/my_template.html</a> (DESCRIPTION)'
+            '</p>\n'
+        )
+        self.assertHTMLEqual(description_output, description_rendered)