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# Copyright (c) Twisted Matrix Laboratories.
# See LICENSE for details.
"""
Tests for L{twisted.web._stan} portion of the L{twisted.web.template}
implementation.
"""
from __future__ import absolute_import, division
from twisted.web.template import Comment, CDATA, CharRef, Tag
from twisted.trial.unittest import TestCase
from twisted.python.compat import _PY3
def proto(*a, **kw):
"""
Produce a new tag for testing.
"""
return Tag('hello')(*a, **kw)
class TagTests(TestCase):
"""
Tests for L{Tag}.
"""
def test_fillSlots(self):
"""
L{Tag.fillSlots} returns self.
"""
tag = proto()
self.assertIdentical(tag, tag.fillSlots(test='test'))
def test_cloneShallow(self):
"""
L{Tag.clone} copies all attributes and children of a tag, including its
render attribute. If the shallow flag is C{False}, that's where it
stops.
"""
innerList = ["inner list"]
tag = proto("How are you", innerList,
hello="world", render="aSampleMethod")
tag.fillSlots(foo='bar')
tag.filename = "foo/bar"
tag.lineNumber = 6
tag.columnNumber = 12
clone = tag.clone(deep=False)
self.assertEqual(clone.attributes['hello'], 'world')
self.assertNotIdentical(clone.attributes, tag.attributes)
self.assertEqual(clone.children, ["How are you", innerList])
self.assertNotIdentical(clone.children, tag.children)
self.assertIdentical(clone.children[1], innerList)
self.assertEqual(tag.slotData, clone.slotData)
self.assertNotIdentical(tag.slotData, clone.slotData)
self.assertEqual(clone.filename, "foo/bar")
self.assertEqual(clone.lineNumber, 6)
self.assertEqual(clone.columnNumber, 12)
self.assertEqual(clone.render, "aSampleMethod")
def test_cloneDeep(self):
"""
L{Tag.clone} copies all attributes and children of a tag, including its
render attribute. In its normal operating mode (where the deep flag is
C{True}, as is the default), it will clone all sub-lists and sub-tags.
"""
innerTag = proto("inner")
innerList = ["inner list"]
tag = proto("How are you", innerTag, innerList,
hello="world", render="aSampleMethod")
tag.fillSlots(foo='bar')
tag.filename = "foo/bar"
tag.lineNumber = 6
tag.columnNumber = 12
clone = tag.clone()
self.assertEqual(clone.attributes['hello'], 'world')
self.assertNotIdentical(clone.attributes, tag.attributes)
self.assertNotIdentical(clone.children, tag.children)
# sanity check
self.assertIdentical(tag.children[1], innerTag)
# clone should have sub-clone
self.assertNotIdentical(clone.children[1], innerTag)
# sanity check
self.assertIdentical(tag.children[2], innerList)
# clone should have sub-clone
self.assertNotIdentical(clone.children[2], innerList)
self.assertEqual(tag.slotData, clone.slotData)
self.assertNotIdentical(tag.slotData, clone.slotData)
self.assertEqual(clone.filename, "foo/bar")
self.assertEqual(clone.lineNumber, 6)
self.assertEqual(clone.columnNumber, 12)
self.assertEqual(clone.render, "aSampleMethod")
def test_clear(self):
"""
L{Tag.clear} removes all children from a tag, but leaves its attributes
in place.
"""
tag = proto("these are", "children", "cool", andSoIs='this-attribute')
tag.clear()
self.assertEqual(tag.children, [])
self.assertEqual(tag.attributes, {'andSoIs': 'this-attribute'})
def test_suffix(self):
"""
L{Tag.__call__} accepts Python keywords with a suffixed underscore as
the DOM attribute of that literal suffix.
"""
proto = Tag('div')
tag = proto()
tag(class_='a')
self.assertEqual(tag.attributes, {'class': 'a'})
def test_commentReprPy2(self):
"""
L{Comment.__repr__} returns a value which makes it easy to see what's
in the comment.
"""
self.assertEqual(repr(Comment(u"hello there")),
"Comment(u'hello there')")
def test_cdataReprPy2(self):
"""
L{CDATA.__repr__} returns a value which makes it easy to see what's in
the comment.
"""
self.assertEqual(repr(CDATA(u"test data")),
"CDATA(u'test data')")
def test_commentReprPy3(self):
"""
L{Comment.__repr__} returns a value which makes it easy to see what's
in the comment.
"""
self.assertEqual(repr(Comment(u"hello there")),
"Comment('hello there')")
def test_cdataReprPy3(self):
"""
L{CDATA.__repr__} returns a value which makes it easy to see what's in
the comment.
"""
self.assertEqual(repr(CDATA(u"test data")),
"CDATA('test data')")
if not _PY3:
test_commentReprPy3.skip = "Only relevant on Python 3."
test_cdataReprPy3.skip = "Only relevant on Python 3."
else:
test_commentReprPy2.skip = "Only relevant on Python 2."
test_cdataReprPy2.skip = "Only relevant on Python 2."
def test_charrefRepr(self):
"""
L{CharRef.__repr__} returns a value which makes it easy to see what
character is referred to.
"""
snowman = ord(u"\N{SNOWMAN}")
self.assertEqual(repr(CharRef(snowman)), "CharRef(9731)")