Emit a warning for record_property when used with xunit2

"property" elements cannot be children of "testsuite" according to the schema, so it is incompatible with xunit2

Related to #5202

changelog/5202.trivial.rst

@@ -0,0 +1,4 @@
+``record_property`` now emits a ``PytestWarning`` when used with ``junit_family=xunit2``: the fixture generates
+``property`` tags as children of ``testcase``, which is not permitted according to the most
+`recent schema <https://github.com/jenkinsci/xunit-plugin/blob/master/
+src/main/resources/org/jenkinsci/plugins/xunit/types/model/xsd/junit-10.xsd>`__.

src/_pytest/junitxml.py

@@ -281,6 +281,21 @@ class _NodeReporter(object):
         self.to_xml = lambda: py.xml.raw(data)
 
 
+def _warn_incompatibility_with_xunit2(request, fixture_name):
+    """Emits a PytestWarning about the given fixture being incompatible with newer xunit revisions"""
+    from _pytest.warning_types import PytestWarning
+
+    xml = getattr(request.config, "_xml", None)
+    if xml is not None and xml.family not in ("xunit1", "legacy"):
+        request.node.warn(
+            PytestWarning(
+                "{fixture_name} is incompatible with junit_family '{family}' (use 'legacy' or 'xunit1')".format(
+                    fixture_name=fixture_name, family=xml.family
+                )
+            )
+        )
+
+
 @pytest.fixture
 def record_property(request):
     """Add an extra properties the calling test.
@@ -294,6 +309,7 @@ def record_property(request):
         def test_function(record_property):
             record_property("example_key", 1)
     """
+    _warn_incompatibility_with_xunit2(request, "record_property")
 
     def append_property(name, value):
         request.node.user_properties.append((name, value))
@@ -307,27 +323,22 @@ def record_xml_attribute(request):
     The fixture is callable with ``(name, value)``, with value being
     automatically xml-encoded
     """
-    from _pytest.warning_types import PytestExperimentalApiWarning, PytestWarning
+    from _pytest.warning_types import PytestExperimentalApiWarning
 
     request.node.warn(
         PytestExperimentalApiWarning("record_xml_attribute is an experimental feature")
     )
 
+    _warn_incompatibility_with_xunit2(request, "record_xml_attribute")
+
     # Declare noop
     def add_attr_noop(name, value):
         pass
 
     attr_func = add_attr_noop
-    xml = getattr(request.config, "_xml", None)
 
-    if xml is not None and xml.family != "xunit1":
-        request.node.warn(
-            PytestWarning(
-                "record_xml_attribute is incompatible with junit_family: "
-                "%s (use: legacy|xunit1)" % xml.family
-            )
-        )
-    elif xml is not None:
+    xml = getattr(request.config, "_xml", None)
+    if xml is not None:
         node_reporter = xml.node_reporter(request.node.nodeid)
         attr_func = node_reporter.add_attribute
 

testing/test_junitxml.py

@@ -993,6 +993,20 @@ def test_record_property_same_name(testdir):
     pnodes[1].assert_attr(name="foo", value="baz")
 
 
+@pytest.mark.parametrize("fixture_name", ["record_property", "record_xml_attribute"])
+def test_record_fixtures_without_junitxml(testdir, fixture_name):
+    testdir.makepyfile(
+        """
+        def test_record({fixture_name}):
+            {fixture_name}("foo", "bar")
+    """.format(
+            fixture_name=fixture_name
+        )
+    )
+    result = testdir.runpytest()
+    assert result.ret == 0
+
+
 @pytest.mark.filterwarnings("default")
 def test_record_attribute(testdir):
     testdir.makeini(
@@ -1023,8 +1037,9 @@ def test_record_attribute(testdir):
 
 
 @pytest.mark.filterwarnings("default")
-def test_record_attribute_xunit2(testdir):
-    """Ensure record_xml_attribute drops values when outside of legacy family
+@pytest.mark.parametrize("fixture_name", ["record_xml_attribute", "record_property"])
+def test_record_fixtures_xunit2(testdir, fixture_name):
+    """Ensure record_xml_attribute and record_property drop values when outside of legacy family
     """
     testdir.makeini(
         """
@@ -1037,21 +1052,28 @@ def test_record_attribute_xunit2(testdir):
         import pytest
 
         @pytest.fixture
-        def other(record_xml_attribute):
-            record_xml_attribute("bar", 1)
-        def test_record(record_xml_attribute, other):
-            record_xml_attribute("foo", "<1");
-    """
+        def other({fixture_name}):
+            {fixture_name}("bar", 1)
+        def test_record({fixture_name}, other):
+            {fixture_name}("foo", "<1");
+    """.format(
+            fixture_name=fixture_name
+        )
     )
 
     result, dom = runandparse(testdir, "-rw")
-    result.stdout.fnmatch_lines(
-        [
-            "*test_record_attribute_xunit2.py:6:*record_xml_attribute is an experimental feature",
-            "*test_record_attribute_xunit2.py:6:*record_xml_attribute is incompatible with "
-            "junit_family: xunit2 (use: legacy|xunit1)",
-        ]
-    )
+    expected_lines = []
+    if fixture_name == "record_xml_attribute":
+        expected_lines.append(
+            "*test_record_fixtures_xunit2.py:6:*record_xml_attribute is an experimental feature"
+        )
+    expected_lines = [
+        "*test_record_fixtures_xunit2.py:6:*{fixture_name} is incompatible "
+        "with junit_family 'xunit2' (use 'legacy' or 'xunit1')".format(
+            fixture_name=fixture_name
+        )
+    ]
+    result.stdout.fnmatch_lines(expected_lines)
 
 
 def test_random_report_log_xdist(testdir, monkeypatch):