[1.1.X] Fixed #6510 -- Refactored the way child nodes are found in template nodes to avoid potential inconsistencies. Thanks to SmileyChris for the patch.

Backport of r12654 from trunk.

git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.1.X@12655 bcc190cf-cafb-0310-a4f2-bffc1f526a37

2 files changed, 57 insertions, 0 deletions

diff --git a/tests/regressiontests/templates/nodelist.py b/tests/regressiontests/templates/nodelist.py
new file mode 100644
index 0000000000..89fac97c66
--- /dev/null
+++ b/tests/regressiontests/templates/nodelist.py
@@ -0,0 +1,30 @@
+from unittest import TestCase
+from django.template.loader import get_template_from_string
+from django.template import VariableNode
+
+
+class NodelistTest(TestCase):
+
+    def test_for(self):
+        source = '{% for i in 1 %}{{ a }}{% endfor %}'
+        template = get_template_from_string(source)
+        vars = template.nodelist.get_nodes_by_type(VariableNode)
+        self.assertEqual(len(vars), 1)
+
+    def test_if(self):
+        source = '{% if x %}{{ a }}{% endif %}'
+        template = get_template_from_string(source)
+        vars = template.nodelist.get_nodes_by_type(VariableNode)
+        self.assertEqual(len(vars), 1)
+
+    def test_ifequal(self):
+        source = '{% ifequal x y %}{{ a }}{% endifequal %}'
+        template = get_template_from_string(source)
+        vars = template.nodelist.get_nodes_by_type(VariableNode)
+        self.assertEqual(len(vars), 1)
+
+    def test_ifchanged(self):
+        source = '{% ifchanged x %}{{ a }}{% endifchanged %}'
+        template = get_template_from_string(source)
+        vars = template.nodelist.get_nodes_by_type(VariableNode)
+        self.assertEqual(len(vars), 1)
diff --git a/tests/regressiontests/templates/tests.py b/tests/regressiontests/templates/tests.py
index 43a6c284ec..36a48a2379 100644
--- a/tests/regressiontests/templates/tests.py
+++ b/tests/regressiontests/templates/tests.py
@@ -24,6 +24,7 @@ from context import context_tests
 from custom import custom_filters
 from parser import token_parsing, filter_parsing, variable_parsing
 from unicode import unicode_tests
+from nodelist import NodelistTest
 
 try:
     from loaders import *
@@ -804,6 +805,32 @@ class Templates(unittest.TestCase):
             # Inheritance from a template with a space in its name should work.
             'inheritance29': ("{% extends 'inheritance 28' %}", {}, '!'),
 
+            # Base template, putting block in a conditional {% if %} tag
+            'inheritance30': ("1{% if optional %}{% block opt %}2{% endblock %}{% endif %}3", {'optional': True}, '123'),
+
+            # Inherit from a template with block wrapped in an {% if %} tag (in parent), still gets overridden
+            'inheritance31': ("{% extends 'inheritance30' %}{% block opt %}two{% endblock %}", {'optional': True}, '1two3'),
+            'inheritance32': ("{% extends 'inheritance30' %}{% block opt %}two{% endblock %}", {}, '13'),
+
+            # Base template, putting block in a conditional {% ifequal %} tag
+            'inheritance33': ("1{% ifequal optional 1 %}{% block opt %}2{% endblock %}{% endifequal %}3", {'optional': 1}, '123'),
+
+            # Inherit from a template with block wrapped in an {% ifequal %} tag (in parent), still gets overridden
+            'inheritance34': ("{% extends 'inheritance33' %}{% block opt %}two{% endblock %}", {'optional': 1}, '1two3'),
+            'inheritance35': ("{% extends 'inheritance33' %}{% block opt %}two{% endblock %}", {'optional': 2}, '13'),
+
+            # Base template, putting block in a {% for %} tag
+            'inheritance36': ("{% for n in numbers %}_{% block opt %}{{ n }}{% endblock %}{% endfor %}_", {'numbers': '123'}, '_1_2_3_'),
+
+            # Inherit from a template with block wrapped in an {% for %} tag (in parent), still gets overridden
+            'inheritance37': ("{% extends 'inheritance36' %}{% block opt %}X{% endblock %}", {'numbers': '123'}, '_X_X_X_'),
+            'inheritance38': ("{% extends 'inheritance36' %}{% block opt %}X{% endblock %}", {}, '_'),
+
+            # The super block will still be found.
+            'inheritance39': ("{% extends 'inheritance30' %}{% block opt %}new{{ block.super }}{% endblock %}", {'optional': True}, '1new23'),
+            'inheritance40': ("{% extends 'inheritance33' %}{% block opt %}new{{ block.super }}{% endblock %}", {'optional': 1}, '1new23'),
+            'inheritance41': ("{% extends 'inheritance36' %}{% block opt %}new{{ block.super }}{% endblock %}", {'numbers': '123'}, '_new1_new2_new3_'),
+
             ### I18N ##################################################################
 
             # {% spaceless %} tag