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|
"""
Tests for our nevow compatiblity layer.
"""
#c Copyright 2008-2024, the GAVO project <gavo@ari.uni-heidelberg.de>
#c
#c This program is free software, covered by the GNU GPL. See the
#c COPYING file in the source distribution.
from twisted.internet import defer
from twisted.web import template
from twisted.web import error as twerror
from twisted.web.template import tags as T
from gavo.formal import nevowc
from gavo.helpers import testhelpers
N_NS = "http://nevow.com/ns/nevow/0.1"
T_NS = "http://twistedmatrix.com/ns/twisted.web.template/0.1"
def loadXML(literal, namespace=N_NS):
"""returns a stan tag from the XML literal.
The XML literal should contain exactly one %s, which will then
be filled with namespace.
"""
return nevowc.XMLString(literal%namespace).load()[0]
class TwistedLoaderTest(testhelpers.VerboseTest):
ns = T_NS
def testLoadSimple(self):
res = loadXML("""
<html xmlns:t="%s"
><t:transparent t:render="foo" t:data="bar"/>
</html>""", self.ns)
iEl = res.children[0]
self.assertEqual(iEl.tagName, '')
self.assertEqual(iEl.render, 'foo')
self.assertEqual(iEl.attributes["nevow:data"], "bar")
def testLoadNested(self):
res = loadXML("""
<html xmlns:n="%s"
><head xmlns:q="http://rfda"><link
q:property="gack" href="urn:whatever"/><script
xmlns:html="http://w3c/html"><html:p
n:render="x">ABC</html:p></script></head><body
><p><span n:render="bar">yadda</span></p></body>
</html>""", self.ns)
linkEl = res[0].children[0].children[0]
self.assertEqual(linkEl.tagName, "link")
self.assertEqual(linkEl.attributes["q:property"], "gack")
scriptEl = res[0].children[0].children[1]
self.assertEqual(scriptEl.children[0].tagName, "html:p")
self.assertEqual(scriptEl.children[0].render, "x")
pEl = res[0].children[1].children[0]
self.assertEqual(pEl.children[0].render, "bar")
def testBindNevowForbidden(self):
self.assertRaisesWithMsg(Exception,
"You may not bind the nevow prefix to a non-twisted or non-nevow URI",
loadXML,
("""<html xmlns:nevow="%s">""", "http://anything.else"))
class NevowLoaderTest(TwistedLoaderTest):
ns = N_NS
# run tests from parent class, just with the nevow namespace.
class LocatePatternTest(testhelpers.VerboseTest):
def testLocateBasic(self):
res = loadXML("""<ul
n:render="sequence" xmlns:n="%s">
><li class="odd" n:pattern="item"/>
><li class="even" n:pattern="item"/>
><li class="empty" n:pattern="empty"/></ul>""")
baseEl = res
pats = nevowc.locatePatterns(baseEl, ["item", "empty"])
self.assertEqual([p.attributes["class"] for p in pats["item"]],
["odd", "even"])
self.assertEqual([p.attributes["class"] for p in pats["empty"]],
["empty"])
def testLocateRecursiveStop(self):
res = loadXML("""<ul
n:render="sequence" xmlns:n="%s"
><li n:pattern="item" class="outer"
><ul n:render="sequence"><li n:pattern="item" class="inner"
/></ul></li></ul>""")
pats = nevowc.locatePatterns(res, ["item"], ["sequence"])
self.assertEqual(
[p.attributes["class"] for p in pats["item"]],
["outer"])
innerUL = res.children[0].children[0]
pats = nevowc.locatePatterns(innerUL, ["item"], ["sequence"])
self.assertEqual(
[p.attributes["class"] for p in pats["item"]],
["inner"])
def testLocateRecursiveNoStop(self):
res = loadXML("""<ul
n:render="sequence" xmlns:n="%s"
><li n:pattern="item" class="outer"
><ul n:render="sequence"><li n:pattern="item" class="inner"
/></ul></li></ul>""")
pats = nevowc.locatePatterns(res, ["item"], ["random"])
self.assertEqual(
[p.attributes["class"] for p in pats["item"]],
["outer", "inner"])
innerUL = res.children[0].children[0]
pats = nevowc.locatePatterns(innerUL, ["item"], ["random"])
self.assertEqual(
[p.attributes["class"] for p in pats["item"]],
['inner'])
def renderElementSync(el, renderClass=nevowc.CommonRenderers):
"""returns a flattened string for el.
el must not contain any deferreds, and it must not require anything
from the request.
"""
res = []
def collect(rendered):
res.append(rendered)
template.flattenString(None,
nevowc.elementFromTag(el, renderClass)
).addBoth(collect)
if hasattr(res[0], "raiseException"):
res[0].raiseException()
return res[0].decode("utf-8")
class RenderSequenceTest(testhelpers.VerboseTest):
def testBasic(self):
el = loadXML("""<ul style="background:red"
n:render="sequence" xmlns:n="%s"
><li class="inner" n:pattern="item" n:render="string"/></ul>""",
N_NS)
el.slotData = list(range(2))
self.assertEqual(renderElementSync(el),
'<ul style="background:red"><li class="inner">0</li>'
'<li class="inner">1</li></ul>')
def testDetachedRender(self):
# i.e., render functions not on the item pattern
el = loadXML("""<ul
n:render="sequence" xmlns:n="%s"
><li n:pattern="item"><span class="foo" n:render="string"/></li></ul>""",
T_NS)
el.slotData = list(range(2))
self.assertEqual(renderElementSync(el),
'<ul><li><span class="foo">0</span></li><li><span class="foo">'
'1</span></li></ul>')
def testNestedRender(self):
el = loadXML("""<ul
n:render="sequence" xmlns:n="%s"
><li n:pattern="item"><ul n:render="sequence" class="inner"
><li n:render="string" n:pattern="item"/></ul></li></ul>""", N_NS)
el.slotData = [list(range(2)), list(range(3,5))]
self.assertEqual(renderElementSync(el),
'<ul><li><ul class="inner"><li>0</li><li>1</li></ul></li><li>'
'<ul class="inner"><li>3</li><li>4</li></ul></li></ul>')
def testMultiPattern(self):
el = loadXML("""<ul
n:render="sequence" xmlns:n="%s"
><li n:pattern="item" class="odd" n:render="string"
/><li n:pattern="item" class="even" n:render="string"
/><li n:pattern="separator"><hr
/></li></ul>""", T_NS)
el.slotData = list(range(4))
self.assertEqual(renderElementSync(el),
'<ul><li class="odd">0</li><li class="even">1</li><li><hr /></li>'
'<li class="odd">2</li><li class="even">3</li></ul>')
def testEmpty(self):
el = loadXML("""<ul
n:render="sequence" xmlns:n="%s"
><li n:pattern="item">Kaputt</li>
<p n:pattern="empty">Nix da</p></ul>""", N_NS)
el.slotData = []
self.assertEqual(renderElementSync(el),
"<p>Nix da</p>")
def testNone(self):
el = loadXML("""<ul
n:render="sequence" xmlns:n="%s"
><li n:pattern="item" n:render="passthrough"></li></ul>""", N_NS)
el.slotData = ["a", None, "b"]
self.assertEqual(renderElementSync(el),
"<ul><li>a</li><li><<NULL>></li><li>b</li></ul>")
def testMappingSequenceTest(self):
el = loadXML("""<ul
n:render="sequence" xmlns:n="%s"
><li n:pattern="item" n:render="mapping"
><n:slot name="von"/>: <n:slot name="zu"/></li></ul>""", T_NS)
el.slotData = [{"von": "a", "zu": "b"},{"von": "c", "zu": "d"},]
self.assertEqual(renderElementSync(el),
'<ul><li>a: b</li><li>c: d</li></ul>')
class DataTricksTest(testhelpers.VerboseTest):
def testLoadData(self):
class B(nevowc.CommonRenderers):
def data_x(self, request, tag):
return 4
el = loadXML(
'<t:invisible t:data="x" xmlns:t="%s">'
'<p t:render="string"/>o<p t:render="string"/></t:invisible>', N_NS)
self.assertEqual(renderElementSync(el, B), "<p>4</p>o<p>4</p>")
def testIndexing(self):
class B(nevowc.CommonRenderers):
def data_x(self, request, tag):
return ["a", "b", "c"]
@template.renderer
def dataAsIs(self, request, tag):
return tag.slotData
el = loadXML('<t:invisible t:data="x" xmlns:t="%s">'
'<p t:render="dataAsIs" t:data="2"/>'
'<p t:render="dataAsIs" t:data="-1"/></t:invisible>', N_NS)
self.assertEqual(renderElementSync(el, B), "cc")
def testComputedMethod(self):
class B(nevowc.CommonRenderers):
def data_gen(self, arg):
return lambda request, tag: arg.split()
el = loadXML("""<table xmlns:n="%s" n:render="sequence"
n:data="gen one two"
><tr n:pattern="item"><td n:render="string">now: </td></tr></table>""",
T_NS)
self.assertEqual(renderElementSync(el, B),
'<table><tr><td>now: one</td></tr><tr><td>now: two</td></tr></table>')
def testInvisible(self):
class B(nevowc.CommonRenderers):
def data_x(self, request, tag):
return ["http://foo", "foo"]
el = loadXML("""<a xmlns:n="%s" n:data="x"
><n:attr name="href" n:data="0" n:render="string"
/><n:invisible n:render="string" n:data="1"/></a>""",
N_NS)
self.assertEqual(renderElementSync(el, B),
'<a href="http://foo">foo</a>')
def testNested(self):
class B(nevowc.CommonRenderers):
def data_x(self, request, tag):
return [None, "won", "too"]
@template.renderer
def ifdata(self, request, tag):
if tag.slotData:
return tag
return ""
el = loadXML("""<div xmlns:n="%s"
><ul n:render="sequence" n:data="x"
><li n:render="ifdata" n:pattern="item"
><n:invisible n:render="string"/></li></ul></div>""",
N_NS)
self.assertEqual(renderElementSync(el, B),
'<div><ul><li>won</li><li>too</li></ul></div>')
def testPropagatingThroughRender(self):
class B(nevowc.CommonRenderers):
def data_x(self, request, tag):
return ["won", "too"]
@template.renderer
def ifdata(self, request, tag):
if tag.slotData:
return tag
return ""
el = loadXML("""<div xmlns:n="%s" n:data="x"
><n:invisible n:render="ifdata"
><ul n:render="sequence"><li n:render="string" n:pattern="item"
></li></ul></n:invisible></div>""",
N_NS)
self.assertEqual(renderElementSync(el, B),
'<div><ul><li>won</li><li>too</li></ul></div>')
class RenderMappingTest(testhelpers.VerboseTest):
def testBasic(self):
class B(nevowc.CommonRenderers):
def data_dict(self, request, tag):
return [
{"term": "foo", "desc": "An expletive"},
{"term": "bar", "desc": "No expletive"},]
el = loadXML(
"""<dl xmlns:t="%s" t:render="sequence" t:data="dict"
><t:transparent t:pattern="item" t:render="mapping"
><dt><t:slot name="term"/></dt><dd
><t:slot name="desc"/></dd></t:transparent></dl>""", N_NS)
self.assertEqual(renderElementSync(el, B),
'<dl><dt>foo</dt><dd>An expletive</dd><dt>bar</dt><dd>'
'No expletive</dd></dl>')
def testMappingSetsData(self):
class B(nevowc.CommonRenderers):
def data_dict(self, request, tag):
return [
{"term": "foo", "desc": "An expletive"},]
@template.renderer
def term(self, request, tag):
data = tag.slotData
return tag[data["term"]]
el = loadXML(
"""<dl xmlns:t="%s" t:render="sequence" t:data="dict"
><t:transparent t:pattern="item" t:render="mapping"
><dt t:render="term"/><dd
><t:slot name="desc"/></dd></t:transparent></dl>""", N_NS)
self.assertEqual(renderElementSync(el, B),
'<dl><dt>foo</dt><dd>An expletive</dd></dl>')
def testKey(self):
class B(nevowc.CommonRenderers):
def data_dict(self, request, tag):
return {"term": "foo", "desc": "An expletive"}
@template.renderer
def mogrify(self, request, tag):
data = tag.slotData
return tag["".join(list(reversed(data)))]
el = loadXML(
"""<div xmlns:t="%s" t:render="mapping" t:data="dict"
><p>Backward: <span t:data="key term" t:render="mogrify"
/> and forward: <t:slot name="term"
/></p></div>""", N_NS)
self.assertEqual(renderElementSync(el, B),
'<div><p>Backward: <span>oof</span> and forward: foo</p></div>')
class RenderTricksTest(testhelpers.VerboseTest):
def testComputedMethod(self):
class R(nevowc.CommonRenderers):
@template.renderer
def gen(self, arg):
def fun(request, tag):
for a in arg.split():
yield tag.clone()[a]
return fun
el = loadXML("""<ul xmlns:n="%s"><li n:render="gen a b c"/></ul>""", T_NS)
self.assertEqual(renderElementSync(el, R),
'<ul><li>a</li><li>b</li><li>c</li></ul>')
def testNonRenderRejected(self):
el = loadXML("""<ul xmlns:n="%s" n:render="__init__"/>""", T_NS)
# I suppose this was intended to raise UnexposedMethodError,
# but the None default in element.lookupRenderMethod prevents
# that right now; and then, anyway, the flattener machinery
# dumbs it all down to a FlattnerError (which would be another
# thing that'd be good to change.
self.assertRaises(Exception, renderElementSync, el)
def testRenderTwice(self):
class R(nevowc.CommonRenderers):
count = [1]
def data_ct(self, request, tag):
self.count[0] += 1
return self.count[0]
el = loadXML(
"""<p xmlns:n="%s" n:data="ct"
><span n:render="string"/></p>""", T_NS)
self.assertEqual(renderElementSync(el, R),
'<p><span>2</span></p>')
self.assertEqual(renderElementSync(el, R),
'<p><span>3</span></p>')
def testRenderTwiceRecursive(self):
class R(nevowc.CommonRenderers):
count = [1]
def data_range(self, request, tag):
self.count[0] += 1
return list(range(self.count[0]))
el = loadXML(
"""<p xmlns:n="%s" n:data="range" n:render="sequence"
><span n:render="string" n:pattern="item"/></p>""", T_NS)
self.assertEqual(renderElementSync(el, R),
'<p><span>0</span><span>1</span></p>')
self.assertEqual(renderElementSync(el, R),
'<p><span>0</span><span>1</span><span>2</span></p>')
class FlattenSyncTest(testhelpers.VerboseTest):
def testSimple(self):
el = loadXML('<p xmlns:n="%s">Hello, World!</p>', T_NS)
self.assertEqual(nevowc.flattenSync(el), b"<p>Hello, World!</p>")
def testError(self):
class R(template.Element):
@template.renderer
def fail(self, request, tag):
raise IOError("Hello, world!")
loader = template.TagLoader(
T.p(render="fail")["not rendered"])
self.assertRaises(twerror.FlattenerError,
nevowc.flattenSync,
R())
def testDeferred(self):
class R(template.Element):
@template.renderer
def fire(self, request, tag):
d = defer.Deferred()
return d
loader = template.TagLoader(
T.p(render="fire")["not rendered"])
self.assertRaisesWithMsg(NotImplementedError,
"flattenSync cannot deal with elements containing deferreds.",
nevowc.flattenSync,
(R(),))
def testWithData(self):
class R(nevowc.NevowcElement):
def data_foo(self, request, tag):
return [{"a": "foo", "b": "bar"},
{"a": "hui", "b": "buh"}]
loader = template.TagLoader(
nevowc.addNevowAttributes(T.div, data="foo")[
T.ul(render="sequence")[
nevowc.addNevowAttributes(T.li(render="mapping"), pattern="item")[
template.slot("a"), " x ", template.slot("b")]]])
self.assertEqual(nevowc.flattenSync(R()),
b'<div><ul><li>foo x bar</li><li>hui x buh</li></ul></div>')
if __name__=="__main__":
testhelpers.main(RenderSequenceTest)
|
