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# Copyright (c) Twisted Matrix Laboratories.
# See LICENSE for details.
"""
Tests for L{twisted.lore.latex}.
"""
import os.path
from xml.dom.minidom import Comment, Element, Text
from twisted.python.filepath import FilePath
from twisted.trial.unittest import TestCase
from twisted.lore.latex import LatexSpitter, getLatexText
class LatexHelperTests(TestCase):
"""
Tests for free functions in L{twisted.lore.latex}.
"""
def test_getLatexText(self):
"""
L{getLatexText} calls the writer function with all of the text at or
beneath the given node. Non-ASCII characters are encoded using
UTF-8.
"""
node = Element('foo')
text = Text()
text.data = u"foo \N{SNOWMAN}"
node.appendChild(text)
result = []
getLatexText(node, result.append)
self.assertEqual(result, [u"foo \N{SNOWMAN}".encode('utf-8')])
class LatexSpitterTests(TestCase):
"""
Tests for L{LatexSpitter}.
"""
def setUp(self):
self.filename = self.mktemp()
self.output = []
self.spitter = LatexSpitter(self.output.append, filename=self.filename)
def test_head(self):
"""
L{LatexSpitter.visitNode} writes out author information for each
I{link} element with a I{rel} attribute set to I{author}.
"""
head = Element('head')
first = Element('link')
first.setAttribute('rel', 'author')
first.setAttribute('title', 'alice')
second = Element('link')
second.setAttribute('rel', 'author')
second.setAttribute('href', 'http://example.com/bob')
third = Element('link')
third.setAttribute('rel', 'author')
third.setAttribute('href', 'mailto:carol@example.com')
head.appendChild(first)
head.appendChild(second)
head.appendChild(third)
self.spitter.visitNode(head)
self.assertEqual(
''.join(self.output),
'\\author{alice \\and $<$http://example.com/bob$>$ \\and $<$carol@example.com$>$}')
def test_skipComments(self):
"""
L{LatexSpitter.visitNode} writes nothing to its output stream for
comments.
"""
self.spitter.visitNode(Comment('foo'))
self.assertNotIn('foo', ''.join(self.output))
def test_anchorListing(self):
"""
L{LatexSpitter.visitNode} emits a verbatim block when it encounters a
code listing (represented by an I{a} element with a I{listing} class).
"""
path = FilePath(self.mktemp())
path.setContent('foo\nbar\n')
listing = Element('a')
listing.setAttribute('class', 'listing')
listing.setAttribute('href', path.path)
self.spitter.visitNode(listing)
self.assertEqual(
''.join(self.output),
"\\begin{verbatim}\n"
"foo\n"
"bar\n"
"\\end{verbatim}\\parbox[b]{\\linewidth}{\\begin{center} --- "
"\\begin{em}temp\\end{em}\\end{center}}")
def test_anchorListingSkipLines(self):
"""
When passed an I{a} element with a I{listing} class and an I{skipLines}
attribute, L{LatexSpitter.visitNode} emits a verbatim block which skips
the indicated number of lines from the beginning of the source listing.
"""
path = FilePath(self.mktemp())
path.setContent('foo\nbar\n')
listing = Element('a')
listing.setAttribute('class', 'listing')
listing.setAttribute('skipLines', '1')
listing.setAttribute('href', path.path)
self.spitter.visitNode(listing)
self.assertEqual(
''.join(self.output),
"\\begin{verbatim}\n"
"bar\n"
"\\end{verbatim}\\parbox[b]{\\linewidth}{\\begin{center} --- "
"\\begin{em}temp\\end{em}\\end{center}}")
def test_anchorRef(self):
"""
L{LatexSpitter.visitNode} emits a footnote when it encounters an I{a}
element with an I{href} attribute with a network scheme.
"""
listing = Element('a')
listing.setAttribute('href', 'http://example.com/foo')
self.spitter.visitNode(listing)
self.assertEqual(
''.join(self.output),
"\\footnote{http://example.com/foo}")
def test_anchorName(self):
"""
When passed an I{a} element with a I{name} attribute,
L{LatexSpitter.visitNode} emits a label.
"""
listing = Element('a')
listing.setAttribute('name', 'foo')
self.spitter.visitNode(listing)
self.assertEqual(
''.join(self.output),
"\\label{%sHASHfoo}" % (
os.path.abspath(self.filename).replace('\\', '/'),))
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