Convert test/jsonld/test_util.py to pytest (#1961)

Not the most straight forward conversion, but it simplifies it somewhat.

Main reason for doing this is to remove the use of `unittest` `subTest` as
we need `pytest-subtest` to process that with `pytest` and that dependency
is causing some complications in dependency solving for pip sometimes.

Merged with one review as this has no runtime impact.

test/jsonld/test_util.py

@@ -1,89 +1,74 @@
-import unittest
-from typing import NamedTuple
+import pytest
 
 from rdflib.plugins.shared.jsonld.util import norm_url
 
 
-class URLTests(unittest.TestCase):
-    @unittest.expectedFailure
-    def test_norm_url_xfail(self):
-        class TestSpec(NamedTuple):
-            base: str
-            url: str
-            result: str
+@pytest.mark.parametrize(
+    ["base", "url", "expected_result"],
+    [
+        pytest.param(
+            "git+ssh://example.com:1231/some/thing/",
+            "a",
+            "git+ssh://example.com:1231/some/thing/a",
+            marks=pytest.mark.xfail(
+                reason="""
+    URL normalizes to the wrong thing.
 
-        tests = [
-            TestSpec(
-                "git+ssh://example.com:1231/some/thing/",
-                "a",
-                "git+ssh://example.com:1231/some/thing/a",
+    AssertionError: assert 'git+ssh://example.com:1231/some/thing/a' == 'a'
+    """,
+                raises=AssertionError,
             ),
-        ]
-
-        for test in tests:
-            (base, url, result) = test
-            with self.subTest(base=base, url=url):
-                self.assertEqual(norm_url(base, url), result)
-
-    def test_norm_url(self):
-        class TestSpec(NamedTuple):
-            base: str
-            url: str
-            result: str
-
-        tests = [
-            TestSpec("http://example.org/", "/one", "http://example.org/one"),
-            TestSpec("http://example.org/", "/one#", "http://example.org/one#"),
-            TestSpec("http://example.org/one", "two", "http://example.org/two"),
-            TestSpec("http://example.org/one/", "two", "http://example.org/one/two"),
-            TestSpec(
-                "http://example.org/",
-                "http://example.net/one",
-                "http://example.net/one",
-            ),
-            TestSpec(
-                "",
-                "1 2 3",
-                "1 2 3",
-            ),
-            TestSpec(
-                "http://example.org/",
-                "http://example.org//one",
-                "http://example.org//one",
-            ),
-            TestSpec("", "http://example.org", "http://example.org"),
-            TestSpec("", "http://example.org/", "http://example.org/"),
-            TestSpec("", "mailto:[email protected]", "mailto:[email protected]"),
-            TestSpec(
-                "http://example.org/",
-                "mailto:[email protected]",
-                "mailto:[email protected]",
-            ),
-            TestSpec("http://example.org/a/b/c", "../../z", "http://example.org/z"),
-            TestSpec("http://example.org/a/b/c", "../", "http://example.org/a/"),
-            TestSpec(
-                "",
-                "git+ssh://example.com:1231/some/thing",
-                "git+ssh://example.com:1231/some/thing",
-            ),
-            TestSpec(
-                "git+ssh://example.com:1231/some/thing",
-                "",
-                "git+ssh://example.com:1231/some/thing",
-            ),
-            TestSpec(
-                "http://example.com/RDFLib/rdflib",
-                "http://example.org",
-                "http://example.org",
-            ),
-            TestSpec(
-                "http://example.com/RDFLib/rdflib",
-                "http://example.org/",
-                "http://example.org/",
-            ),
-        ]
-
-        for test in tests:
-            (base, url, result) = test
-            with self.subTest(base=base, url=url):
-                self.assertEqual(norm_url(base, url), result)
+        ),
+        ("http://example.org/", "/one", "http://example.org/one"),
+        ("http://example.org/", "/one#", "http://example.org/one#"),
+        ("http://example.org/one", "two", "http://example.org/two"),
+        ("http://example.org/one/", "two", "http://example.org/one/two"),
+        (
+            "http://example.org/",
+            "http://example.net/one",
+            "http://example.net/one",
+        ),
+        (
+            "",
+            "1 2 3",
+            "1 2 3",
+        ),
+        (
+            "http://example.org/",
+            "http://example.org//one",
+            "http://example.org//one",
+        ),
+        ("", "http://example.org", "http://example.org"),
+        ("", "http://example.org/", "http://example.org/"),
+        ("", "mailto:[email protected]", "mailto:[email protected]"),
+        (
+            "http://example.org/",
+            "mailto:[email protected]",
+            "mailto:[email protected]",
+        ),
+        ("http://example.org/a/b/c", "../../z", "http://example.org/z"),
+        ("http://example.org/a/b/c", "../", "http://example.org/a/"),
+        (
+            "",
+            "git+ssh://example.com:1231/some/thing",
+            "git+ssh://example.com:1231/some/thing",
+        ),
+        (
+            "git+ssh://example.com:1231/some/thing",
+            "",
+            "git+ssh://example.com:1231/some/thing",
+        ),
+        (
+            "http://example.com/RDFLib/rdflib",
+            "http://example.org",
+            "http://example.org",
+        ),
+        (
+            "http://example.com/RDFLib/rdflib",
+            "http://example.org/",
+            "http://example.org/",
+        ),
+    ],
+)
+def test_norm_url_xfail(base: str, url: str, expected_result: str) -> None:
+    assert expected_result == norm_url(base, url)