usethis-python · nathanjmcdougall · Dec 30, 2025 · Dec 29, 2025 · Dec 29, 2025 · Dec 29, 2025
diff --git a/README.md b/README.md
@@ -137,9 +137,9 @@ As another example, to use pytest, run:
 $ uvx usethis tool pytest
 ✔ Adding dependency 'pytest' to the 'test' group in 'pyproject.toml'.
 ✔ Adding pytest config to 'pyproject.toml'.
-✔ Selecting Ruff rule 'PT' in 'pyproject.toml'.
 ✔ Creating '/tests'.
 ✔ Writing '/tests/conftest.py'.
+✔ Selecting Ruff rule 'PT' in 'pyproject.toml'.
 ☐ Add test files to the '/tests' directory with the format 'test_*.py'.
 ☐ Add test functions with the format 'test_*()'.
 ☐ Run 'uv run pytest' to run the tests.

diff --git a/docs/start/example-usage.md b/docs/start/example-usage.md
@@ -27,9 +27,9 @@ As another example, to use pytest, run:
 $ uvx usethis tool pytest
 ✔ Adding dependency 'pytest' to the 'test' group in 'pyproject.toml'.
 ✔ Adding pytest config to 'pyproject.toml'.
-✔ Selecting Ruff rule 'PT' in 'pyproject.toml'.
 ✔ Creating '/tests'.
 ✔ Writing '/tests/conftest.py'.
+✔ Selecting Ruff rule 'PT' in 'pyproject.toml'.
 ☐ Add test files to the '/tests' directory with the format 'test_*.py'.
 ☐ Add test functions with the format 'test_*()'.
 ☐ Run 'uv run pytest' to run the tests.

diff --git a/src/usethis/_core/tool.py b/src/usethis/_core/tool.py
@@ -311,27 +311,39 @@ def use_pytest(*, remove: bool = False, how: bool = False) -> None:
         tool.print_how_to_use()
         return
 
-    rule_config = tool.get_rule_config()
-
     if not remove:
         ensure_dep_declaration_file()
 
         tool.add_test_deps()
         tool.add_configs()
-        if RuffTool().is_used():
-            RuffTool().apply_rule_config(rule_config)
 
         # deptry currently can't scan the tests folder for dev deps
         # https://github.com/fpgmaas/deptry/issues/302
         add_pytest_dir()
 
+        rule_config = tool.get_rule_config()
+
+        for _tool in ALL_TOOLS:
+            if isinstance(_tool, PytestTool):
+                continue
+
+            config = _tool.get_rule_config()
+
+            if config.is_related_to_tests and _tool.is_used():
+                rule_config |= config.subset_related_to_tests()
+
+        if RuffTool().is_used():
+            RuffTool().apply_rule_config(rule_config)
+
         PytestTool().update_bitbucket_steps()
 
         tool.print_how_to_use()
 
         if CoveragePyTool().is_used():
             CoveragePyTool().print_how_to_use()
     else:
+        rule_config = tool.get_rule_config()
+
         PytestTool().remove_bitbucket_steps()
 
         if RuffTool().is_used():

diff --git a/src/usethis/_tool/rule.py b/src/usethis/_tool/rule.py
@@ -46,6 +46,19 @@ def get_all_ignored(self) -> list[Rule]:
         """Get all (project-scope) ignored rules."""
         return self.ignored + self.unmanaged_ignored
 
+    def subset_related_to_tests(self) -> Self:
+        """Get a RuleConfig with only rules relating to tests configuration.
+
+        This is useful for cases where we are introducing pytest into a project, and
+        then we want to introduce specifically this subset of rules.
+        """
+        self = self.model_copy()
+        self.selected = []
+        self.ignored = []
+        self.unmanaged_selected = []
+        self.unmanaged_ignored = []
+        return self
+
     @property
     def empty(self) -> bool:
         """Check if the rule config is empty."""
@@ -57,6 +70,11 @@ def empty(self) -> bool:
             and not self.tests_unmanaged_ignored
         )
 
+    @property
+    def is_related_to_tests(self) -> bool:
+        """Check if the rule config has any tests-related rules."""
+        return bool(self.tests_unmanaged_ignored)
+
     def __repr__(self) -> str:
         """Representation which omits empty-list fields."""
         args = []

diff --git a/tests/usethis/_core/test_core_tool.py b/tests/usethis/_core/test_core_tool.py
@@ -2630,6 +2630,22 @@ def test_ruff_integration(self, uv_init_dir: Path):
                 # Assert
                 assert "PT" in RuffTool().get_selected_rules()
 
+        @pytest.mark.usefixtures("_vary_network_conn")
+        def test_ruff_import_linter_integration_adds_test_dir_ignores(
+            self, uv_init_dir: Path
+        ):
+            with change_cwd(uv_init_dir), files_manager():
+                # Arrange
+                use_ruff()
+                use_import_linter()
+
+                # Act
+                use_pytest()
+
+                # Assert
+                # Verify that INP rules are ignored in tests/** after pytest creates tests/
+                assert "INP" in RuffTool().get_ignored_rules_in_glob("tests/**")
+
         @pytest.mark.usefixtures("_vary_network_conn")
         def test_pytest_ini_priority(self, uv_init_dir: Path):
             # Arrange

diff --git a/tests/usethis/_ui/interface/test_tool.py b/tests/usethis/_ui/interface/test_tool.py
@@ -556,9 +556,9 @@ def test_readme_example(self, tmp_path: Path):
             == """\
 ✔ Adding dependency 'pytest' to the 'test' group in 'pyproject.toml'.
 ✔ Adding pytest config to 'pyproject.toml'.
-✔ Selecting Ruff rule 'PT' in 'pyproject.toml'.
 ✔ Creating '/tests'.
 ✔ Writing '/tests/conftest.py'.
+✔ Selecting Ruff rule 'PT' in 'pyproject.toml'.
 ☐ Add test files to the '/tests' directory with the format 'test_*.py'.
 ☐ Add test functions with the format 'test_*()'.
 ☐ Run 'uv run pytest' to run the tests.