Improve a test

testing/python/fixtures.py

@@ -4538,14 +4538,19 @@ def test_yield_fixture_with_no_value(pytester: Pytester) -> None:
     assert result.ret == ExitCode.TESTS_FAILED
 
 
+@pytest.mark.parametrize("scope", ["module", "package"])
 def test_basing_fixture_argkeys_on_param_values_rather_than_on_param_indices(
+    scope,
     pytester: Pytester,
 ):
-    pytester.makepyfile(
-        """
+    package = pytester.mkdir("package")
+    package.joinpath("__init__.py").write_text("")
+    package.joinpath("test_a.py").write_text(
+        textwrap.dedent(
+            f"""\
             import pytest
 
-        @pytest.fixture(scope='module')
+            @pytest.fixture(scope='{scope}')
             def fixture1(request):
                 pass
 
@@ -4560,14 +4565,15 @@ def test_basing_fixture_argkeys_on_param_values_rather_than_on_param_indices(
             def test_2():
                 pass
 
-        @pytest.mark.parametrize("param", [0,1,2], scope='module')
+            @pytest.mark.parametrize("param", [0, 1, 2], scope='{scope}')
             def test_3(param):
                 pass
 
-        @pytest.mark.parametrize("param", [2,1,0], scope='module')
+            @pytest.mark.parametrize("param", [2, 1, 0], scope='{scope}')
             def test_4(param):
                 pass
             """
+        ),
     )
     result = pytester.runpytest("--collect-only")
     result.stdout.re_match_lines(