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|
import unittest
from typing import Any
from parsel import Selector
from parsel.xpathfuncs import set_xpathfunc
class XPathFuncsTestCase(unittest.TestCase):
def test_has_class_simple(self) -> None:
body = """
<p class="foo bar-baz">First</p>
<p class="foo">Second</p>
<p class="bar">Third</p>
<p>Fourth</p>
"""
sel = Selector(text=body)
self.assertEqual(
[x.extract() for x in sel.xpath('//p[has-class("foo")]/text()')],
["First", "Second"],
)
self.assertEqual(
[x.extract() for x in sel.xpath('//p[has-class("bar")]/text()')],
["Third"],
)
self.assertEqual(
[x.extract() for x in sel.xpath('//p[has-class("foo","bar")]/text()')],
[],
)
self.assertEqual(
[x.extract() for x in sel.xpath('//p[has-class("foo","bar-baz")]/text()')],
["First"],
)
def test_has_class_error_no_args(self) -> None:
body = """
<p CLASS="foo">First</p>
"""
sel = Selector(text=body)
self.assertRaisesRegex(
ValueError,
"has-class must have at least 1 argument",
sel.xpath,
"has-class()",
)
def test_has_class_error_invalid_arg_type(self) -> None:
body = """
<p CLASS="foo">First</p>
"""
sel = Selector(text=body)
self.assertRaisesRegex(
ValueError,
"has-class arguments must be strings",
sel.xpath,
"has-class(.)",
)
def test_has_class_error_invalid_unicode(self) -> None:
body = """
<p CLASS="foo">First</p>
"""
sel = Selector(text=body)
self.assertRaisesRegex(
ValueError,
"All strings must be XML compatible",
sel.xpath,
'has-class("héllö")'.encode(),
)
def test_has_class_unicode(self) -> None:
body = """
<p CLASS="fóó">First</p>
"""
sel = Selector(text=body)
self.assertEqual(
[x.extract() for x in sel.xpath('//p[has-class("fóó")]/text()')],
["First"],
)
def test_has_class_uppercase(self) -> None:
body = """
<p CLASS="foo">First</p>
"""
sel = Selector(text=body)
self.assertEqual(
[x.extract() for x in sel.xpath('//p[has-class("foo")]/text()')],
["First"],
)
def test_has_class_newline(self) -> None:
body = """
<p CLASS="foo
bar">First</p>
"""
sel = Selector(text=body)
self.assertEqual(
[x.extract() for x in sel.xpath('//p[has-class("foo")]/text()')],
["First"],
)
def test_has_class_tab(self) -> None:
body = """
<p CLASS="foo\tbar">First</p>
"""
sel = Selector(text=body)
self.assertEqual(
[x.extract() for x in sel.xpath('//p[has-class("foo")]/text()')],
["First"],
)
def test_set_xpathfunc(self) -> None:
def myfunc(ctx: Any) -> None:
myfunc.call_count += 1 # type: ignore[attr-defined]
myfunc.call_count = 0 # type: ignore[attr-defined]
body = """
<p CLASS="foo">First</p>
"""
sel = Selector(text=body)
self.assertRaisesRegex(
ValueError,
"Unregistered function in myfunc",
sel.xpath,
"myfunc()",
)
set_xpathfunc("myfunc", myfunc)
sel.xpath("myfunc()")
self.assertEqual(myfunc.call_count, 1) # type: ignore[attr-defined]
set_xpathfunc("myfunc", None)
self.assertRaisesRegex(
ValueError,
"Unregistered function in myfunc",
sel.xpath,
"myfunc()",
)
|
