Use new no-match functions to replace previous idiom

testing/python/collect.py

@@ -1139,7 +1139,7 @@ def test_unorderable_types(testdir):
     """
     )
     result = testdir.runpytest()
-    assert "TypeError" not in result.stdout.str()
+    result.stdout.no_fnmatch_line("*TypeError*")
     assert result.ret == ExitCode.NO_TESTS_COLLECTED
 
 

testing/python/fixtures.py

@@ -455,7 +455,7 @@ class TestFillFixtures:
                 "*1 error*",
             ]
         )
-        assert "INTERNAL" not in result.stdout.str()
+        result.stdout.no_fnmatch_line("*INTERNAL*")
 
     def test_fixture_excinfo_leak(self, testdir):
         # on python2 sys.excinfo would leak into fixture executions
@@ -2647,7 +2647,7 @@ class TestFixtureMarker:
             *3 passed*
         """
         )
-        assert "error" not in result.stdout.str()
+        result.stdout.no_fnmatch_line("*error*")
 
     def test_fixture_finalizer(self, testdir):
         testdir.makeconftest(
@@ -3151,7 +3151,7 @@ class TestShowFixtures:
             *hello world*
         """
         )
-        assert "arg0" not in result.stdout.str()
+        result.stdout.no_fnmatch_line("*arg0*")
 
     @pytest.mark.parametrize("testmod", [True, False])
     def test_show_fixtures_conftest(self, testdir, testmod):

testing/python/setup_only.py

@@ -27,7 +27,7 @@ def test_show_only_active_fixtures(testdir, mode, dummy_yaml_custom_test):
     result.stdout.fnmatch_lines(
         ["*SETUP    F arg1*", "*test_arg1 (fixtures used: arg1)*", "*TEARDOWN F arg1*"]
     )
-    assert "_arg0" not in result.stdout.str()
+    result.stdout.no_fnmatch_line("*_arg0*")
 
 
 def test_show_different_scopes(testdir, mode):

testing/python/show_fixtures_per_test.py

@@ -1,6 +1,6 @@
 def test_no_items_should_not_show_output(testdir):
     result = testdir.runpytest("--fixtures-per-test")
-    assert "fixtures used by" not in result.stdout.str()
+    result.stdout.no_fnmatch_line("*fixtures used by*")
     assert result.ret == 0
 
 
@@ -30,7 +30,7 @@ def test_fixtures_in_module(testdir):
             "    arg1 docstring",
         ]
     )
-    assert "_arg0" not in result.stdout.str()
+    result.stdout.no_fnmatch_line("*_arg0*")
 
 
 def test_fixtures_in_conftest(testdir):