Viewing file:  test_fallback.py (9.35 KB) -rw-r--r--
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from Xml.Xslt import test_harness
from Ft.Xml.Xslt import Error
source_1 = """<?xml version="1.0" encoding="utf-8"?><dummy/>"""
# An element enables forwards-compatible mode for itself, its
# attributes, its descendants and their attributes if either it is an
# xsl:stylesheet element whose version attribute is not equal to 1.0,
# or it is a literal result element that has an xsl:version attribute
# whose value is not equal to 1.0. [...]
#
# If an element is processed in forwards-compatible mode, then:
# if it is a top-level element and XSLT 1.0 does not allow such
# elements as top-level elements, then the element must be ignored
# along with its content;
#
# stylesheet version 1.0;
# top-level literal result element version 3.0, in no namespace;
# expected result: element is ignored (i.e., without the xsl:version > 1.0,
# it would trigger an exception as per XSLT 1.0 sec. 2.2, but since it has
# the xsl:version > 1.0, it matches the rule quoted above, and will be
# ignored. It's still visible in the document, though.)
sheet_1a = """<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" indent="yes"/>
<greeting xsl:version="3.0">hello</greeting>
<xsl:template match="/">
<result><xsl:value-of select="document('')/*/greeting"/></result>
</xsl:template>
</xsl:stylesheet>"""
expected_1a = """<?xml version="1.0" encoding="UTF-8"?>
<result>hello</result>"""
# stylesheet version 1.0
# top-level literal result element with no version info, in no namespace
# (should raise an exception per XSLT 1.0 sec. 2.2)
sheet_1b = """<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" indent="yes"/>
<greeting>hello</greeting>
<xsl:template match="/">
<result/>
</xsl:template>
</xsl:stylesheet>"""
expected_1b = None
# stylesheet version 1.0
# top-level literal result element version 1.0, in no namespace
# (same as previous test, but version is explicit;
# should still raise an exception per XSLT 1.0 sec. 2.2)
sheet_1c = """<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" indent="yes"/>
<greeting xsl:version="1.0">hello</greeting>
<xsl:template match="/">
<result/>
</xsl:template>
</xsl:stylesheet>"""
expected_1c = None
# stylesheet version 3.0
# top-level literal result element version 1.0, in no namespace
# (it disables forwards-compatible processing for itself,
# so it should still raise an exception per XSLT 1.0 sec. 2.2)
sheet_1d = """<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="3.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" indent="yes"/>
<greeting xsl:version="1.0">hello</greeting>
<xsl:template match="/">
<result/>
</xsl:template>
</xsl:stylesheet>"""
expected_1d = None
# stylesheet version 3.0
# top-level literal result element w/no version, in no namespace
# (should be ignored / no error)
sheet_1e = """<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="3.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" indent="yes"/>
<greeting>hello</greeting>
<xsl:template match="/">
<result><xsl:value-of select="document('')/*/greeting"/></result>
</xsl:template>
</xsl:stylesheet>"""
expected_1e = """<?xml version="1.0" encoding="UTF-8"?>
<result>hello</result>"""
# forwards-compatible processing example from the spec
sheet_2 = """<xsl:stylesheet version="1.1" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:template match="/">
<xsl:choose>
<xsl:when test="system-property('xsl:version') >= 1.1">
<xsl:exciting-new-1.1-feature/>
</xsl:when>
<xsl:otherwise>
<html>
<head>
<title>XSLT 1.1 required</title>
</head>
<body>
<p>Sorry, this stylesheet requires XSLT 1.1.</p>
</body>
</html>
</xsl:otherwise>
</xsl:choose>
</xsl:template>
</xsl:stylesheet>"""
expected_2 = """<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<title>XSLT 1.1 required</title>
</head>
<body>
<p>Sorry, this stylesheet requires XSLT 1.1.</p>
</body>
</html>"""
sheet_3 = """<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" indent="yes"/>
<xsl:template match="/">
<!--
literal result element version = 1.0;
fallback instruction is noop.
-->
<result xsl:version="1.0">
<xsl:fallback>fallback</xsl:fallback>
</result>
</xsl:template>
</xsl:stylesheet>"""
expected_3 = """<?xml version="1.0" encoding="UTF-8"?>
<result/>"""
sheet_4 = """<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" indent="yes"/>
<xsl:template match="/">
<!--
literal result element version != 1.0;
element is not instantiated;
no error must be signaled.
-->
<result xsl:version="3.0">
<xsl:choose>
<xsl:when test="false()">
<xsl:perform-magic>We do magic<xsl:fallback>Sorry, we don't do magic</xsl:fallback></xsl:perform-magic>
</xsl:when>
<xsl:otherwise>hello world</xsl:otherwise>
</xsl:choose>
</result>
</xsl:template>
</xsl:stylesheet>"""
expected_4 = """<?xml version="1.0" encoding="UTF-8"?>
<result>hello world</result>"""
sheet_5 = """<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" indent="yes"/>
<xsl:template match="/">
<!--
literal result element version != 1.0;
fallback must be performed;
-->
<result xsl:version="3.0">
<xsl:perform-magic>We do magic<xsl:fallback>Sorry, we don't do magic</xsl:fallback></xsl:perform-magic>
</result>
</xsl:template>
</xsl:stylesheet>"""
expected_5 = """<?xml version="1.0" encoding="UTF-8"?>
<result>Sorry, we don't do magic</result>"""
sheet_6 = """<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" indent="yes"/>
<xsl:template match="/">
<!--
literal result element version != 1.0;
fallback must be performed;
since no fallback child, error must be signaled.
-->
<result xsl:version="3.0">
<xsl:perform-magic/>
</result>
</xsl:template>
</xsl:stylesheet>"""
expected_6 = None
def Test(tester):
tester.startGroup('forwards-compatible processing')
source = test_harness.FileInfo(string=source_1)
sheet = test_harness.FileInfo(string=sheet_1a)
test_harness.XsltTest(tester, source, [sheet], expected_1a,
title='1.0 sty w/non-1.0 top-level elem')
source = test_harness.FileInfo(string=source_1)
sheet = test_harness.FileInfo(string=sheet_1b)
test_harness.XsltTest(tester, source, [sheet], expected_1b,
exceptionCode=Error.ILLEGAL_ELEMENT_CHILD,
title='1.0 sty w/implicit 1.0 illegal top-level elem')
source = test_harness.FileInfo(string=source_1)
sheet = test_harness.FileInfo(string=sheet_1c)
test_harness.XsltTest(tester, source, [sheet], expected_1c,
exceptionCode=Error.ILLEGAL_ELEMENT_CHILD,
title='1.0 sty w/explicit 1.0 illegal top-level elem')
source = test_harness.FileInfo(string=source_1)
sheet = test_harness.FileInfo(string=sheet_1d)
test_harness.XsltTest(tester, source, [sheet], expected_1d,
exceptionCode=Error.ILLEGAL_ELEMENT_CHILD,
title='3.0 sty w/explicit 1.0 illegal top-level elem')
source = test_harness.FileInfo(string=source_1)
sheet = test_harness.FileInfo(string=sheet_1e)
test_harness.XsltTest(tester, source, [sheet], expected_1e,
title='3.0 sty w/3.0 top-level elem illegal in 1.0')
source = test_harness.FileInfo(string=source_1)
sheet = test_harness.FileInfo(string=sheet_2)
test_harness.XsltTest(tester, source, [sheet], expected_2,
title='forwards-compatible example from XSLT 1.0 spec')
source = test_harness.FileInfo(string=source_1)
sheet = test_harness.FileInfo(string=sheet_3)
test_harness.XsltTest(tester, source, [sheet], expected_3,
title='1.0 literal result elem w/fallback')
source = test_harness.FileInfo(string=source_1)
sheet = test_harness.FileInfo(string=sheet_4)
test_harness.XsltTest(tester, source, [sheet], expected_4,
title='uninstantiated non-1.0 literal result elem')
source = test_harness.FileInfo(string=source_1)
sheet = test_harness.FileInfo(string=sheet_5)
test_harness.XsltTest(tester, source, [sheet], expected_5,
title='non-1.0 literal result elem w/fallback')
source = test_harness.FileInfo(string=source_1)
sheet = test_harness.FileInfo(string=sheet_6)
test_harness.XsltTest(tester, source, [sheet], expected_6,
exceptionCode=Error.FWD_COMPAT_WITHOUT_FALLBACK,
title='non-1.0 literal result elem w/o fallback')
tester.groupDone()
return
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