summaryrefslogtreecommitdiff
path: root/django/tests/template_tests.py
diff options
context:
space:
mode:
Diffstat (limited to 'django/tests/template_tests.py')
-rw-r--r--django/tests/template_tests.py707
1 files changed, 707 insertions, 0 deletions
diff --git a/django/tests/template_tests.py b/django/tests/template_tests.py
new file mode 100644
index 0000000000..3b082818bd
--- /dev/null
+++ b/django/tests/template_tests.py
@@ -0,0 +1,707 @@
+"""
+Unit tests for template.py
+
+These tests assume the following template syntax:
+
+FILTER_SEPARATOR = '|'
+VARIABLE_ATTRIBUTE_SEPARATOR = '.'
+BLOCK_TAG_START = '{%'
+BLOCK_TAG_END = '%}'
+VARIABLE_TAG_START = '{{'
+VARIABLE_TAG_END = '}}'
+"""
+
+from django.core import template
+import unittest
+
+class RandomSyntaxErrorsCheck(unittest.TestCase):
+
+ def testTagsOnOneLine(self):
+ "Tags straddling more than one line are not interpreted"
+ c = template.Context({'key':'value'})
+ t = template.Template('<h1>{{key\n}}</h1>')
+ expected = '<h1>{{key\n}}</h1>'
+ self.assertEqual(expected, t.render(c))
+
+class PlainTextCheck(unittest.TestCase):
+
+ def testPlainText(self):
+ "Plain text should go through the template parser untouched"
+ c = template.Context()
+ t = template.Template('<h1>Success</h1>')
+ expected = '<h1>Success</h1>'
+ self.assertEqual(expected, t.render(c))
+
+class VariableSubstitutionCheck(unittest.TestCase):
+
+ def testSingleTag(self):
+ "Variables should be replaced with their value in the current context"
+ c = template.Context({'headline':'Success'})
+ t = template.Template('<h1>{{headline}}</h1>')
+ expected = '<h1>Success</h1>'
+ self.assertEqual(expected, t.render(c))
+
+ def testDoubleTag(self):
+ "More than one replacement variable is allowed in a template"
+ c = template.Context({'firsttag':'it', 'secondtag':'worked'})
+ t = template.Template('<h1>{{firsttag}} {{secondtag}}</h1>')
+ expected = '<h1>it worked</h1>'
+ self.assertEqual(expected, t.render(c))
+
+ def testNonexistentVariable(self):
+ "Fail silently when a variable is not found in the current context"
+ c = template.Context({})
+ t = template.Template('<h1>{{unknownvar}}</h1>')
+ expected = '<h1></h1>'
+ self.assertEqual(expected, t.render(c))
+
+ def testVariablesWithSpaces(self):
+ "A replacement-variable tag may not contain more than one word"
+ t = '<h1>{{multi word tag}}</h1>'
+ self.assertRaises(template.TemplateSyntaxError, template.Template, t)
+
+ def testEmptyTag(self):
+ "Raise TemplateSyntaxError for empty variable tags"
+ t = '{{ }}'
+ self.assertRaises(template.TemplateSyntaxError, template.Template, t)
+ t = '{{ }}'
+ self.assertRaises(template.TemplateSyntaxError, template.Template, t)
+
+ def testIntegerContextValue(self):
+ "Accept integers as variable values"
+ c = template.Context({'var':55})
+ t = template.Template('<h1>{{var}}</h1>')
+ expected = '<h1>55</h1>'
+ self.assertEqual(expected, t.render(c))
+
+ def textIntegerContextKey(self):
+ "Accept integers as variable keys"
+ c = template.Context({55:'var'})
+ t = template.Template('<h1>{{55}}</h1>')
+ expected = '<h1>var</h1>'
+ self.assertEqual(expected, t.render(c))
+
+ def testVariableAttributeAccess1(self):
+ "Attribute syntax allows a template to call an object's attribute"
+ class AClass: pass
+ obj = AClass()
+ obj.att = 'attvalue'
+ c = template.Context({'var':obj})
+ t = template.Template('<h1>{{ var.att }}</h1>')
+ expected = '<h1>attvalue</h1>'
+ self.assertEqual(expected, t.render(c))
+
+ def testVariableAttributeAccess2(self):
+ "Attribute syntax allows a template to call an object's attribute (with getattr defined)"
+ class AClass:
+ def __getattr__(self, attr):
+ return "attvalue"
+ obj = AClass()
+ c = template.Context({'var':obj})
+ t = template.Template('<h1>{{ var.att }}</h1>')
+ expected = '<h1>attvalue</h1>'
+ self.assertEqual(expected, t.render(c))
+
+ def testVariableAttributeAccessMultiple(self):
+ "Multiple levels of attribute access are allowed"
+ class AClass: pass
+ obj = AClass()
+ obj.article = AClass()
+ obj.article.section = AClass()
+ obj.article.section.title = 'Headline'
+ c = template.Context({'obj':obj})
+ t = template.Template('<h1>{{ obj.article.section.title }}</h1>')
+ expected = '<h1>Headline</h1>'
+ self.assertEqual(expected, t.render(c))
+
+ def testNonexistentVariableAttributeObject(self):
+ "Fail silently when a variable's attribute isn't found"
+ class AClass: pass
+ obj = AClass()
+ obj.att = 'attvalue'
+ c = template.Context({'var':obj})
+ t = template.Template('<h1>{{ var.nonexistentatt }}</h1>')
+ expected = '<h1></h1>'
+ self.assertEqual(expected, t.render(c))
+
+ def testIllegalUnderscoreInVariableName(self):
+ "Raise TemplateSyntaxError when trying to access a variable beginning with an underscore"
+ t = '<h1>{{ var._att }}</h1>'
+ self.assertRaises(template.TemplateSyntaxError, template.Template, t)
+ t = '<h1>{{ _att }}</h1>'
+ self.assertRaises(template.TemplateSyntaxError, template.Template, t)
+
+ def testIllegalCharacterInVariableName(self):
+ "Raise TemplateSyntaxError when trying to access a variable containing an illegal character"
+ t = '<h1>{{ (blah }}</h1>'
+ self.assertRaises(template.TemplateSyntaxError, template.Template, t)
+ t = '<h1>{{ (blah.test) }}</h1>'
+ self.assertRaises(template.TemplateSyntaxError, template.Template, t)
+ t = '<h1>{{ bl(ah.test) }}</h1>'
+ self.assertRaises(template.TemplateSyntaxError, template.Template, t)
+
+ def testVariableAttributeDictionary(self):
+ "Attribute syntax allows a template to call a dictionary key's value"
+ obj = {'att':'attvalue'}
+ c = template.Context({'var':obj})
+ t = template.Template('<h1>{{ var.att }}</h1>')
+ expected = '<h1>attvalue</h1>'
+ self.assertEqual(expected, t.render(c))
+
+ def testNonexistentVariableAttributeDictionary(self):
+ "Fail silently when a variable's dictionary key isn't found"
+ obj = {'att':'attvalue'}
+ c = template.Context({'var':obj})
+ t = template.Template('<h1>{{ var.nonexistentatt }}</h1>')
+ expected = '<h1></h1>'
+ self.assertEqual(expected, t.render(c))
+
+ def testVariableAttributeCallable(self):
+ "Attribute syntax allows a template to call a simple method"
+ class AClass:
+ def hello(self): return 'hi'
+ obj = AClass()
+ c = template.Context({'var':obj})
+ t = template.Template('<h1>{{ var.hello }}</h1>')
+ expected = '<h1>hi</h1>'
+ self.assertEqual(expected, t.render(c))
+
+ def testVariableAttributeCallableWrongArguments(self):
+ "Fail silently when accessing a non-simple method"
+ class AClass:
+ def hello(self, name): return 'hi, %s' % name
+ obj = AClass()
+ c = template.Context({'var':obj})
+ t = template.Template('<h1>{{ var.hello }}</h1>')
+ expected = '<h1></h1>'
+ self.assertEqual(expected, t.render(c))
+
+class VariableFiltersCheck(unittest.TestCase):
+
+ def setUp(self):
+ self.c = template.Context({'var':'Hello There Programmer'})
+
+ def tearDown(self):
+ self.c = None
+
+ def testUpper(self):
+ "The 'upper' filter converts a string into all uppercase"
+ t = template.Template('<h1>{{ var|upper }}</h1>')
+ expected = '<h1>HELLO THERE PROGRAMMER</h1>'
+ self.assertEqual(expected, t.render(self.c))
+
+ def testLower(self):
+ "The 'lower' filter converts a string into all lowercase"
+ t = template.Template('<h1>{{ var|lower }}</h1>')
+ expected = '<h1>hello there programmer</h1>'
+ self.assertEqual(expected, t.render(self.c))
+
+ def testUpperThenLower(self):
+ "Filters may be applied in succession (upper|lower)"
+ t = template.Template('<h1>{{ var|upper|lower }}</h1>')
+ expected = '<h1>hello there programmer</h1>'
+ self.assertEqual(expected, t.render(self.c))
+
+ def testLowerThenUpper(self):
+ "Filters may be applied in succession (lower|upper)"
+ t = template.Template('<h1>{{ var|lower|upper }}</h1>')
+ expected = '<h1>HELLO THERE PROGRAMMER</h1>'
+ self.assertEqual(expected, t.render(self.c))
+
+ def testSpaceBetweenVariableAndFilterPipe(self):
+ "Raise TemplateSyntaxError for space between a variable and filter pipe"
+ t = '<h1>{{ var |lower }}</h1>'
+ self.assertRaises(template.TemplateSyntaxError, template.Template, t)
+
+ def testSpaceBetweenFilterPipeAndFilterName1(self):
+ "Raise TemplateSyntaxError for space after a filter pipe"
+ t = '<h1>{{ var| lower }}</h1>'
+ expected = '<h1>Hello There Programmer</h1>'
+ self.assertRaises(template.TemplateSyntaxError, template.Template, t)
+
+ def testNonexistentFilter(self):
+ "Raise TemplateSyntaxError for a nonexistent filter"
+ t = '<h1>{{ var|nonexistentfilter }}</h1>'
+ self.assertRaises(template.TemplateSyntaxError, template.Template, t)
+
+ def testDefaultFilter1(self):
+ "Ignore the default argument when a variable passed through the 'default' filter already exists"
+ c = template.Context({'var':'Variable'})
+ t = template.Template('<h1>{{ var|default:"Default" }}</h1>')
+ expected = '<h1>Variable</h1>'
+ self.assertEqual(expected, t.render(c))
+
+ def testDefaultFilter2(self):
+ "Use the default argument when a variable passed through the 'default' filter doesn't exist"
+ c = template.Context({'var':'Variable'})
+ t = template.Template('<h1>{{ nonvar|default:"Default" }}</h1>')
+ expected = '<h1>Default</h1>'
+ self.assertEqual(expected, t.render(c))
+
+ def testDefaultFilter3(self):
+ "Use the default argument when a variable passed through the 'default' filter doesn't exist (spaces)"
+ c = template.Context({'var':'Variable'})
+ t = template.Template('<h1>{{ nonvar|default:"Default value" }}</h1>')
+ expected = '<h1>Default value</h1>'
+ self.assertEqual(expected, t.render(c))
+
+ def testDefaultFilter4(self):
+ "Use the default argument when a variable passed through the 'default' filter doesn't exist (quoted)"
+ c = template.Context({'var':'Variable'})
+ t = template.Template('<h1>{{ nonvar|default:"Default \"quoted\" value" }}</h1>')
+ expected = '<h1>Default "quoted" value</h1>'
+ self.assertEqual(expected, t.render(c))
+
+ def testDefaultFilter4(self):
+ "Use the default argument when a variable passed through the 'default' filter doesn't exist (escaped backslash)"
+ c = template.Context({'var':'Variable'})
+ t = template.Template('<h1>{{ nonvar|default:"Default \\\\ slash" }}</h1>')
+ expected = '<h1>Default \\ slash</h1>'
+ self.assertEqual(expected, t.render(c))
+
+ def testDefaultFilter4(self):
+ "Use the default argument when a variable passed through the 'default' filter doesn't exist (single backslash)"
+ t = '<h1>{{ nonvar|default:"Default \\ slash" }}</h1>'
+ self.assertRaises(template.TemplateSyntaxError, template.Template, t)
+
+ def testIllegalCharacterInFilterName(self):
+ "Raise TemplateSyntaxError when trying to access a filter containing an illegal character"
+ t = '<h1>{{ blah|(lower) }}</h1>'
+ self.assertRaises(template.TemplateSyntaxError, template.Template, t)
+ t = '<h1>{{ blah|low(er) }}</h1>'
+ self.assertRaises(template.TemplateSyntaxError, template.Template, t)
+
+class BlockTagCheck(unittest.TestCase):
+
+ def testNonexistentTag(self):
+ "Raise TemplateSyntaxError for invalid block tags"
+ t = '<h1>{% not-a-tag %}</h1>'
+ self.assertRaises(template.TemplateSyntaxError, template.Template, t)
+
+ def testEmptyTag(self):
+ "Raise TemplateSyntaxError for empty block tags"
+ t = '{% %}'
+ self.assertRaises(template.TemplateSyntaxError, template.Template, t)
+
+class FirstOfCheck(unittest.TestCase):
+
+ def testFirstOfDisplaysFirstIfSet(self):
+ "A firstof tag should display the first item if it evaluates to true somehow"
+ c = template.Context({'first': 'one', 'second': 'two'})
+ t = template.Template('<h1>{% firstof first second %}</h1>')
+ expected = '<h1>one</h1>'
+ self.assertEqual(expected, t.render(c))
+
+ def testFirstOfDisplaysSecondIfFirstIsFalse(self):
+ "A firstof tag should display the second item if it evaluates to true and the first is false"
+ c = template.Context({'first': '', 'second': 'two'})
+ t = template.Template('<h1>{% firstof first second %}</h1>')
+ expected = '<h1>two</h1>'
+ self.assertEqual(expected, t.render(c))
+
+ def testFirstOfRaisesErrorIfEmpty(self):
+ "A firstof tag should raise a syntax error if it doesn't have any arguments"
+ t = '{% firstof %}'
+ self.assertRaises(template.TemplateSyntaxError, template.Template, t)
+
+ def testFirstOfDoesNothingIfAllAreFalse(self):
+ "A firstof tag should display nothing if no arguments evaluate to true"
+ c = template.Context({'first': '', 'second': False})
+ t = template.Template('<h1>{% firstof first second third %}</h1>')
+ expected = '<h1></h1>'
+ self.assertEqual(expected, t.render(c))
+
+ def testFirstOfWorksWithInts(self):
+ "Can a firstof tag display an integer?"
+ c = template.Context({'first': 1, 'second': False})
+ t = template.Template('<h1>{% firstof first second %}</h1>')
+ expected = '<h1>1</h1>'
+ self.assertEqual(expected, t.render(c))
+
+class IfStatementCheck(unittest.TestCase):
+
+ def testSingleIfStatementTrue(self):
+ "An if statement should display its contents if the test evaluates true"
+ c = template.Context({'test':True})
+ t = template.Template('<h1>{% if test %}Yes{% endif %}</h1>')
+ expected = '<h1>Yes</h1>'
+ self.assertEqual(expected, t.render(c))
+
+ def testSingleIfStatementFalse(self):
+ "An if statement should not display its contents if the test is false"
+ c = template.Context({'test':False})
+ t = template.Template('<h1>{% if test %}Should not see this{% endif %}</h1>')
+ expected = '<h1></h1>'
+ self.assertEqual(expected, t.render(c))
+
+ def testNestedIfStatementTrueThenTrue(self):
+ "Nested if statements should work properly (case 1)"
+ c = template.Context({'test1':True, 'test2':True})
+ t = template.Template('<h1>{% if test1 %} First {% if test2 %} Second {% endif %} First again {% endif %}</h1>')
+ expected = '<h1> First Second First again </h1>'
+ self.assertEqual(expected, t.render(c))
+
+ def testNestedIfStatementTrueThenFalse(self):
+ "Nested if statements should work properly (case 2)"
+ c = template.Context({'test1':True, 'test2':False})
+ t = template.Template('<h1>{% if test1 %} First {% if test2 %} Second {% endif %} First again {% endif %}</h1>')
+ expected = '<h1> First First again </h1>'
+ self.assertEqual(expected, t.render(c))
+
+ def testNestedIfStatementFalseThenTrue(self):
+ "Nested if statements should work properly (case 3)"
+ c = template.Context({'test1':False, 'test2':True})
+ t = template.Template('<h1>{% if test1 %} First {% if test2 %} Second {% endif %} First again {% endif %}</h1>')
+ expected = '<h1></h1>'
+ self.assertEqual(expected, t.render(c))
+
+ def testNestedIfStatementFalseThenFalse(self):
+ "Nested if statements should work properly (case 4)"
+ c = template.Context({'test1':False, 'test2':False})
+ t = template.Template('<h1>{% if test1 %} First {% if test2 %} Second {% endif %} First again {% endif %}</h1>')
+ expected = '<h1></h1>'
+ self.assertEqual(expected, t.render(c))
+
+ def testElseIfTrue(self):
+ "An else statement should not execute if the test evaluates to true"
+ c = template.Context({'test':True})
+ t = template.Template('<h1>{% if test %}Correct{% else %}Incorrect{% endif %}</h1>')
+ expected = '<h1>Correct</h1>'
+ self.assertEqual(expected, t.render(c))
+
+ def testElseIfFalse(self):
+ "An else statement should execute if the test evaluates to false"
+ c = template.Context({'test':False})
+ t = template.Template('<h1>{% if test %}Incorrect{% else %}Correct{% endif %}</h1>')
+ expected = '<h1>Correct</h1>'
+ self.assertEqual(expected, t.render(c))
+
+ def testNonClosedIfTag(self):
+ "Raise TemplateSyntaxError for non-closed 'if' tags"
+ c = template.Context({'test':True})
+ t = '<h1>{% if test %}</h1>'
+ self.assertRaises(template.TemplateSyntaxError, template.Template, t)
+
+ def testNonexistentTest(self):
+ "Fail silently when an if statement accesses a nonexistent test"
+ c = template.Context({'var':'value'})
+ t = template.Template('<h1>{% if nonexistent %}Hello{% endif %}</h1>')
+ expected = '<h1></h1>'
+ self.assertEqual(expected, t.render(c))
+
+ def testIfTagNoArgs(self):
+ "If statements must have one argument (case 1)"
+ t = '<h1>{% if %}Hello{% endif %}</h1>'
+ self.assertRaises(template.TemplateSyntaxError, template.Template, t)
+
+ def testIfTagManyArgs(self):
+ "If statements must have one argument (case 2)"
+ t = '<h1>{% if multiple tests %}Hello{% endif %}</h1>'
+ self.assertRaises(template.TemplateSyntaxError, template.Template, t)
+
+ def testAttributeAccessInIfNode(self):
+ "An if node should resolve a variable's attributes before checking it as a test"
+ class AClass: pass
+ obj = AClass()
+ obj.article = AClass()
+ obj.article.section = AClass()
+ obj.article.section.title = 'Headline'
+ c = template.Context({'obj':obj})
+ t = template.Template('<h1>{% if obj.article.section.title %}Hello{% endif %}</h1>')
+ expected = '<h1>Hello</h1>'
+ self.assertEqual(expected, t.render(c))
+ t = template.Template('<h1>{% if obj.article.section.not_here %}Hello{% endif %}</h1>')
+ expected = '<h1></h1>'
+ self.assertEqual(expected, t.render(c))
+
+ def testIfNot(self):
+ "If statements supports 'not' as an optional argument"
+ t = template.Template('{% if not a %}Not a{% endif %}')
+ c = template.Context({'a': False})
+ expected = 'Not a'
+ self.assertEqual(expected, t.render(c))
+ c['a'] = True
+ expected = ''
+ self.assertEqual(expected, t.render(c))
+
+ def testIfOr(self):
+ "If statements support 'or'"
+ t = template.Template('{% if a or b %}Hello{% endif %}')
+ c = template.Context({'a': False, 'b': True})
+ expected = 'Hello'
+ self.assertEqual(expected, t.render(c))
+ c['b'] = False
+ expected = ''
+ self.assertEqual(expected, t.render(c))
+
+ def testIfOrNot(self):
+ "If statements support 'or' clauses with optional 'not's"
+ t = template.Template('{% if a or not b or c%}Hello{% endif %}')
+ c = template.Context({'a': False, 'b': False, 'c': False})
+ expected = 'Hello'
+ self.assertEqual(expected, t.render(c))
+ c['b'] = True
+ expected = ''
+ self.assertEqual(expected, t.render(c))
+
+class ForLoopCheck(unittest.TestCase):
+
+ def testNormalForLoop(self):
+ "A for loop should work as expected, given one or more values"
+ c = template.Context({'pieces': ('1', '2', '3')})
+ t = template.Template('<h1>{% for piece in pieces %}{{ piece }}{% endfor %}</h1>')
+ expected = '<h1>123</h1>'
+ self.assertEqual(expected, t.render(c))
+
+ def testBlankForLoop(self):
+ "A for loop should work as expected, given an empty list"
+ c = template.Context({'pieces': []})
+ t = template.Template('<h1>{% for piece in pieces %}{{ piece }}{% endfor %}</h1>')
+ expected = '<h1></h1>'
+ self.assertEqual(expected, t.render(c))
+
+ def testInvalidForTagFourWords(self):
+ "Raise TemplateSyntaxError if a 'for' statement is not exactly 4 words"
+ t = '<h1>{% for article %}</h1>'
+ self.assertRaises(template.TemplateSyntaxError, template.Template, t)
+
+ def testInvalidForTagThirdWord(self):
+ "Raise TemplateSyntaxError if 3rd word in a 'for' statement isn't 'in'"
+ t = '<h1>{% for article NOTIN blah %}{% endfor %}</h1>'
+ self.assertRaises(template.TemplateSyntaxError, template.Template, t)
+
+ def testNonClosedForTag(self):
+ "Raise TemplateSyntaxError for non-closed 'for' tags"
+ t = '<h1>{% for i in numbers %}{{ i }}</h1>'
+ self.assertRaises(template.TemplateSyntaxError, template.Template, t)
+
+ def testNonexistentVariable1(self):
+ "Fail silently in loops with nonexistent variables in defn"
+ c = template.Context({'var':'value'})
+ t = template.Template('<h1>{% for i in nonexistent %}<p>{{ var }}</p>{% endfor %}</h1>')
+ expected = '<h1></h1>'
+ self.assertEqual(expected, t.render(c))
+
+ def testNonexistentVariable2(self):
+ "Raise TemplateSyntaxError in loops with nonexistent variables in loop"
+ c = template.Context({'set':('val1', 'val2')})
+ t = template.Template('<h1>{% for i in set %}<p>{{ nonexistent }}</p>{% endfor %}</h1>')
+ expected = '<h1><p></p><p></p></h1>'
+ self.assertEqual(expected, t.render(c))
+
+ def testAttributeAccessInForNode(self):
+ "A for node should resolve a variable's attributes before looping through it"
+ c = template.Context({'article': {'authors':('Simon', 'Adrian')}})
+ t = template.Template('<p>{% for i in article.authors %}{{ i }}{% endfor %}</p>')
+ self.assertEqual('<p>SimonAdrian</p>', t.render(c))
+ t = template.Template('<p>{% for i in article.nonexistent %}{{ i }}{% endfor %}</p>')
+ self.assertEqual('<p></p>', t.render(c))
+
+ def testForLoopFirst(self):
+ "A for loop's 'first' variable should work as expected"
+ c = template.Context({'pieces': ('1', '2', '3')})
+ t = template.Template('<h1>{% for piece in pieces %}{% if forloop.first %}<h2>First</h2>{% endif %}{{ piece }}{% endfor %}</h1>')
+ expected = '<h1><h2>First</h2>123</h1>'
+ self.assertEqual(expected, t.render(c))
+
+ def testForLoopLast(self):
+ "A for loop's 'last' variable should work as expected"
+ c = template.Context({'pieces': ('1', '2', '3')})
+ t = template.Template('<h1>{% for piece in pieces %}{% if forloop.last %}<h2>Last</h2>{% endif %}{{ piece }}{% endfor %}</h1>')
+ expected = '<h1>12<h2>Last</h2>3</h1>'
+ self.assertEqual(expected, t.render(c))
+
+class CycleNodeCheck(unittest.TestCase):
+
+ def testNormalUsage(self):
+ "A cycle tag should work as expected"
+ c = template.Context({'set':range(10)})
+ t = template.Template('{% for i in set %}{% cycle red, green %}-{{ i }} {% endfor %}')
+ expected = 'red-0 green-1 red-2 green-3 red-4 green-5 red-6 green-7 red-8 green-9 '
+ self.assertEqual(expected, t.render(c))
+
+ def testNoArguments(self):
+ "Raise TemplateSyntaxError in cycle tags with no arguments"
+ t = '{% cycle %}'
+ self.assertRaises(template.TemplateSyntaxError, template.Template, t)
+
+ def testOneArgument(self):
+ "Raise TemplateSyntaxError in cycle tags with only one argument"
+ t = '{% cycle hello %}'
+ self.assertRaises(template.TemplateSyntaxError, template.Template, t)
+
+ def testExtraInitialSpaces(self):
+ "Extra spaces around cycle tags and their arguments should be ignored"
+ c = template.Context({'set':range(5)})
+ t = template.Template('{% for i in set %}{% cycle red, green %}{% endfor %}')
+ expected = 'redgreenredgreenred'
+ self.assertEqual(expected, t.render(c))
+
+class TemplateTagNodeCheck(unittest.TestCase):
+
+ def testNormalUsage(self):
+ "A templatetag tag should work as expected"
+ c = template.Context()
+ t = template.Template('{% templatetag openblock %}{% templatetag closeblock %}{% templatetag openvariable %}{% templatetag closevariable %}')
+ expected = '{%%}{{}}'
+ self.assertEqual(expected, t.render(c))
+
+ def testNoArguments(self):
+ "Raise TemplateSyntaxError in templatetag tags with no arguments"
+ t = '{% templatetag %}'
+ self.assertRaises(template.TemplateSyntaxError, template.Template, t)
+
+ def testTwoArguments(self):
+ "Raise TemplateSyntaxError in templatetag tags with more than one argument"
+ t = '{% templatetag hello goodbye %}'
+ self.assertRaises(template.TemplateSyntaxError, template.Template, t)
+ t = '{% templatetag hello goodbye helloagain %}'
+ self.assertRaises(template.TemplateSyntaxError, template.Template, t)
+
+ def testBadArgument(self):
+ "Raise TemplateSyntaxError in templatetag tags with invalid arguments"
+ t = '{% templatetag hello %}'
+ self.assertRaises(template.TemplateSyntaxError, template.Template, t)
+
+class PluginFilterCheck(unittest.TestCase):
+
+ def custom_filter(self, value, arg):
+ "Temporary filter used to verify the filter plugin system is working"
+ return "_%s_%s_" % (value, arg)
+
+ def testPluginFilter(self):
+ "Plugin support allows for custom filters"
+ template.register_filter('unittest', self.custom_filter, True)
+ c = template.Context({'var':'value'})
+ t = template.Template('<body>{{ var|unittest:"hello" }}</body>')
+ expected = '<body>_value_hello_</body>'
+ self.assertEqual(expected, t.render(c))
+ template.unregister_filter('unittest')
+
+ def testUnregisterPluginFilter(self):
+ "Plugin support allows custom filters to be unregistered"
+ template.register_filter('unittest', self.custom_filter, True)
+ c = template.Context({'var':'value'})
+ t = template.Template('<body>{{ var|unittest:"hello" }}</body>')
+ rendered = t.render(c) # should run with no exception
+ template.unregister_filter('unittest')
+
+class PluginTagCheck(unittest.TestCase):
+
+ class CustomNode(template.Node):
+ "Prints argument"
+ def __init__(self, arg):
+ self.arg = arg
+
+ def render(self, context):
+ return '_%s_' % self.arg
+
+ def do_custom_node(self, parser, token):
+ "Handle the 'unittest' custom tag"
+ bits = token.contents.split()
+ return self.CustomNode(bits[1])
+
+ def testPluginTag(self):
+ "Plugin support allows for custom tags"
+ template.register_tag('unittest', self.do_custom_node)
+ c = template.Context({})
+ t = template.Template('<body>{% unittest hello %}</body>')
+ expected = '<body>_hello_</body>'
+ self.assertEqual(expected, t.render(c))
+ template.unregister_tag('unittest')
+
+ def testUnregisterPluginTag(self):
+ "Plugin support allows custom tags to be unregistered"
+ template.register_tag('unittest', self.do_custom_node)
+ c = template.Context({})
+ t = template.Template('<body>{% unittest hello %}</body>')
+ rendered = t.render(c) # should run with no exception
+ del(t)
+ template.unregister_tag('unittest')
+ t = '<body>{% unittest hello %}</body>'
+ self.assertRaises(template.TemplateSyntaxError, template.Template, t)
+
+class ContextUsageCheck(unittest.TestCase):
+
+ def testVariableContext2(self):
+ "Variables should fall through additional block-level contexts"
+ c = template.Context({'global':'out', 'set': ('1', '2', '3')})
+ t = template.Template('<body><h1>{{ global }}</h1>{% for i in set %}<p>{{ i }} {{ global }}</p>{% endfor %}</body>')
+ expected = '<body><h1>out</h1><p>1 out</p><p>2 out</p><p>3 out</p></body>'
+ self.assertEqual(expected, t.render(c))
+
+ def testVariableContext2(self):
+ "Variables set within a block statement override like-named variables within their scope"
+ c = template.Context({'i':'out', 'set': ('1', '2', '3')})
+ t = template.Template('<body><h1>{{ i }}</h1>{% for i in set %}<p>{{ i }}</p>{% endfor %}{{ i }}</body>')
+ expected = '<body><h1>out</h1><p>1</p><p>2</p><p>3</p>out</body>'
+ self.assertEqual(expected, t.render(c))
+
+ def testVariableContextDelete(self):
+ "Variables can be deleted from the current context"
+ c = template.Context({'a':'first', 'b':'second'})
+ del c['a']
+ self.assertEqual(c.__repr__(), template.Context({'b':'second'}).__repr__())
+
+ def testInvalidVariableContextDelete(self):
+ "Raise KeyError if code tries to delete a variable that doesn't exist in the current context"
+ c = template.Context({'a':'first'})
+ self.assertRaises(KeyError, c.__delitem__, 'b')
+
+class AdvancedUsageCheck(unittest.TestCase):
+
+ def testIfInsideFor(self):
+ "An if statement should be executed repeatedly inside a for statement"
+ c = template.Context({'set':(True, False, True, True, False)})
+ t = template.Template('<ul>{% for i in set %}{% if i %}<li>1</li>{% endif %}{% endfor %}</ul>')
+ expected = '<ul><li>1</li><li>1</li><li>1</li></ul>'
+ self.assertEqual(expected, t.render(c))
+
+ def testIfElseInsideFor(self):
+ "An if/else statement should be executed repeatedly inside a for statement"
+ c = template.Context({'set':(True, False, True, True, False)})
+ t = template.Template('<ul>{% for i in set %}<li>{% if i %}1{% else %}0{% endif %}</li>{% endfor %}</ul>')
+ expected = '<ul><li>1</li><li>0</li><li>1</li><li>1</li><li>0</li></ul>'
+ self.assertEqual(expected, t.render(c))
+
+ def testForInsideIf_True(self):
+ "A for loop inside an if statement should be executed if the test=true"
+ c = template.Context({'test':True, 'set':('1', '2', '3')})
+ t = template.Template('<body>{% if test %}<ul>{% for i in set %}<li>{{ i }}</li>{% endfor %}</ul>{% endif %}</body>')
+ expected = '<body><ul><li>1</li><li>2</li><li>3</li></ul></body>'
+ self.assertEqual(expected, t.render(c))
+
+ def testForInsideIf_False(self):
+ "A for loop inside an if statement shouldn't be executed if the test=false"
+ c = template.Context({'test':False, 'set':('1', '2', '3')})
+ t = template.Template('<body>{% if test %}<ul>{% for i in set %}<li>{{ i }}</li>{% endfor %}</ul>{% endif %}</body>')
+ expected = '<body></body>'
+ self.assertEqual(expected, t.render(c))
+
+ def testForInsideIfInsideFor(self):
+ "A for loop inside an if statement inside a for loop should work properly"
+ c = template.Context({'set1': (True, False, False, False, True), 'set2': ('1', '2', '3')})
+ t = template.Template('<body>{% for i in set1 %}{% if i %}{% for j in set2 %}{{ j }}{% endfor %}{% endif %}{% endfor %}</body>')
+ expected = '<body>123123</body>'
+ self.assertEqual(expected, t.render(c))
+
+ def testMultipleRendersWhenCompiled(self):
+ "A template can render multiple contexts without having to be recompiled"
+ t = template.Template('<body>{% for i in set1 %}{% if i %}{% for j in set2 %}{{ j }}{% endfor %}{% endif %}{% endfor %}</body>')
+ c = template.Context({'set1': (True, False, False, False, False), 'set2': ('1', '2', '3')})
+ self.assertEqual('<body>123</body>', t.render(c))
+ c = template.Context({'set1': (True, True, False, False, False), 'set2': ('1', '2', '3')})
+ self.assertEqual('<body>123123</body>', t.render(c))
+ c = template.Context({'set1': (True, True, True, False, False), 'set2': ('1', '2', '3')})
+ self.assertEqual('<body>123123123</body>', t.render(c))
+ c = template.Context({'set1': (True, True, True, True, False), 'set2': ('1', '2', '3')})
+ self.assertEqual('<body>123123123123</body>', t.render(c))
+ c = template.Context({'set1': (True, True, True, True, True), 'set2': ('1', '2', '3')})
+ self.assertEqual('<body>123123123123123</body>', t.render(c))
+
+def tests():
+ s = unittest.TestLoader().loadTestsFromName(__name__)
+ unittest.TextTestRunner(verbosity=0).run(s)
+
+if __name__ == "__main__":
+ tests()
View Lorry Controller Status