Fix test compatibility with pytest >= 9.1

Pytest 9.1 no longer accepts non-Collection iterables in parametrize. Wrap generator
functions and itertools.product calls with list(). Also deduplicate the parametrize
values in testLegacyQuoteAttribute. The character list had 6 duplicates
between the "spec" prefix and the extended character ranges.  With --strict (set
in pytest.ini), pytest 9.1 enforces unique parametrization IDs and rejects them.

Assisted-by: Claude Opus 4.6

Author: hrnciar

html5lib/tests/test_encoding.py

@@ -82,7 +82,7 @@ def param_encoding():
             yield test[b'data'], test[b'encoding']
 
 
-@pytest.mark.parametrize("data, encoding", param_encoding())
+@pytest.mark.parametrize("data, encoding", list(param_encoding()))
 def test_parser_encoding(data, encoding):
     p = HTMLParser()
     assert p.documentEncoding is None
@@ -92,7 +92,7 @@ def test_parser_encoding(data, encoding):
     assert encoding == p.documentEncoding, errorMessage(data, encoding, p.documentEncoding)
 
 
-@pytest.mark.parametrize("data, encoding", param_encoding())
+@pytest.mark.parametrize("data, encoding", list(param_encoding()))
 def test_prescan_encoding(data, encoding):
     stream = _inputstream.HTMLBinaryInputStream(data, useChardet=False)
     encoding = encoding.lower().decode("ascii")

html5lib/tests/test_sanitizer.py

@@ -130,8 +130,8 @@ def test_details_summary_allowed():
 
 
 @pytest.mark.parametrize("expected, input",
-                         (pytest.param(expected, input, id=id)
-                          for id, expected, input in param_sanitizer()))
+                         [pytest.param(expected, input, id=id)
+                          for id, expected, input in param_sanitizer()])
 def test_sanitizer(expected, input):
     parsed = parseFragment(expected)
     expected = serialize(parsed,

html5lib/tests/test_serializer.py

@@ -155,14 +155,12 @@ def testSpecQuoteAttribute(c):
     test_serializer(input_, output_, options_)
 
 
-@pytest.mark.parametrize("c", list("\t\n\u000C\x20\r\"'=<>`"
-                                   "\x00\x01\x02\x03\x04\x05\x06\x07\x08\t\n"
+@pytest.mark.parametrize("c", list("\x00\x01\x02\x03\x04\x05\x06\x07\x08\t\n"
                                    "\x0b\x0c\r\x0e\x0f\x10\x11\x12\x13\x14\x15"
                                    "\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f"
-                                   "\x20\x2f\x60\xa0\u1680\u180e\u180f\u2000"
-                                   "\u2001\u2002\u2003\u2004\u2005\u2006\u2007"
-                                   "\u2008\u2009\u200a\u2028\u2029\u202f\u205f"
-                                   "\u3000"))
+                                   "\x20\"'=<>/\x60\xa0\u1680\u180e\u180f"
+                                   "\u2000\u2001\u2002\u2003\u2004\u2005\u2006"
+                                   "\u2007\u2008\u2009\u200a\u2028\u2029\u202f\u205f\u3000"))
 def testLegacyQuoteAttribute(c):
     input_ = [["StartTag", "http://www.w3.org/1999/xhtml", "span",
                [{"namespace": None, "name": "foo", "value": c}]]]
@@ -212,7 +210,7 @@ def param_serializer():
                 yield test["input"], test["expected"], test.get("options", {})
 
 
-@pytest.mark.parametrize("input, expected, options", param_serializer())
+@pytest.mark.parametrize("input, expected, options", list(param_serializer()))
 def test_serializer(input, expected, options):
     encoding = options.get("encoding", None)
 

html5lib/tests/test_treewalkers.py

@@ -87,7 +87,7 @@ def param_treewalker_six_mix():
             yield intext, expected, attrs, tree
 
 
-@pytest.mark.parametrize("intext, expected, attrs_to_add, tree", param_treewalker_six_mix())
+@pytest.mark.parametrize("intext, expected, attrs_to_add, tree", list(param_treewalker_six_mix()))
 def test_treewalker_six_mix(intext, expected, attrs_to_add, tree):
     """tests what happens when we add attributes to the intext"""
     treeName, treeClass = tree
@@ -105,7 +105,7 @@ def test_treewalker_six_mix(intext, expected, attrs_to_add, tree):
         raise AssertionError("TreewalkerEditTest: %s\nExpected:\n%s\nReceived:\n%s" % (treeName, expected, output))
 
 
-@pytest.mark.parametrize("tree,char", itertools.product(sorted(treeTypes.items()), ["x", "\u1234"]))
+@pytest.mark.parametrize("tree,char", list(itertools.product(sorted(treeTypes.items()), ["x", "\u1234"])))
 def test_fragment_single_char(tree, char):
     expected = [
         {'data': char, 'type': 'Characters'}