Increased test coverage for various template tags.

1 files changed, 21 insertions, 1 deletions

diff --git a/tests/template_tests/syntax_tests/test_extends.py b/tests/template_tests/syntax_tests/test_extends.py
index 5b0b8d1811..0689838ae8 100644
--- a/tests/template_tests/syntax_tests/test_extends.py
+++ b/tests/template_tests/syntax_tests/test_extends.py
@@ -1,4 +1,4 @@
-from django.template import NodeList
+from django.template import NodeList, TemplateSyntaxError
 from django.template.base import Node
 from django.template.loader_tags import ExtendsNode
 from django.test import SimpleTestCase
@@ -55,6 +55,9 @@ inheritance_templates = {
     'inheritance40': "{% extends 'inheritance33' %}{% block opt %}new{{ block.super }}{% endblock %}",
     'inheritance41': "{% extends 'inheritance36' %}{% block opt %}new{{ block.super }}{% endblock %}",
     'inheritance42': "{% extends 'inheritance02'|cut:' ' %}",
+    'inheritance_empty': "{% extends %}",
+    'extends_duplicate': "{% extends 'base.html' %}{% extends 'base.html' %}",
+    'duplicate_block': "{% extends 'base.html' %}{% block content %}2{% endblock %}{% block content %}4{% endblock %}",
 }
 
 
@@ -400,6 +403,23 @@ class InheritanceTests(SimpleTestCase):
         output = self.engine.render_to_string('inheritance42')
         self.assertEqual(output, '1234')
 
+    @setup(inheritance_templates)
+    def test_inheritance_empty(self):
+        with self.assertRaisesMessage(TemplateSyntaxError, "'extends' takes one argument"):
+            self.engine.render_to_string('inheritance_empty')
+
+    @setup(inheritance_templates)
+    def test_extends_duplicate(self):
+        msg = "'extends' cannot appear more than once in the same template"
+        with self.assertRaisesMessage(TemplateSyntaxError, msg):
+            self.engine.render_to_string('extends_duplicate')
+
+    @setup(inheritance_templates)
+    def test_duplicate_block(self):
+        msg = "'block' tag with name 'content' appears more than once"
+        with self.assertRaisesMessage(TemplateSyntaxError, msg):
+            self.engine.render_to_string('duplicate_block')
+
 
 class ExtendsNodeTests(SimpleTestCase):
     def test_extends_node_repr(self):