Make datetime tests pass without requiring UTC system timezone

Makefile

@@ -18,7 +18,7 @@ lint:
 
 .PHONY: test
 test:
-	coverage run -m pytest
+	TZ=utc coverage run -m pytest
 	python tests/mypy_checks.py
 
 .PHONY: testcov

requirements/docs.txt

@@ -79,7 +79,7 @@ packaging==23.1
     #   mkdocs
 pathspec==0.11.1
     # via black
-platformdirs==3.4.0
+platformdirs==3.5.0
     # via black
 pygments==2.15.1
     # via mkdocs-material

requirements/linting.txt

@@ -28,7 +28,7 @@ packaging==23.1
     # via black
 pathspec==0.11.1
     # via black
-platformdirs==3.4.0
+platformdirs==3.5.0
     # via
     #   black
     #   virtualenv

requirements/tests.txt

@@ -39,7 +39,7 @@ pytest==7.3.1
     #   pytest-examples
     #   pytest-mock
     #   pytest-pretty
-pytest-examples==0.0.8
+pytest-examples==0.0.10
     # via -r requirements/tests.in
 pytest-mock==3.10.0
     # via -r requirements/tests.in

tests/test_docs.py

@@ -1,25 +1,33 @@
 import platform
+from pathlib import Path
 
 import pytest
 from pytest_examples import CodeExample, EvalExample, find_examples
 
+root_dir = Path(__file__).parent.parent
+
+examples = find_examples(
+    root_dir / 'dirty_equals',
+    root_dir / 'docs',
+)
+
 
 @pytest.mark.skipif(platform.python_implementation() == 'PyPy', reason='PyPy does not allow metaclass dunder methods')
-@pytest.mark.parametrize('example', find_examples('dirty_equals', 'docs'), ids=str)
+@pytest.mark.parametrize('example', examples, ids=str)
 def test_docstrings(example: CodeExample, eval_example: EvalExample):
     prefix_settings = example.prefix_settings()
     # E711 and E712 refer to `== True` and `== None` and need to be ignored
     # I001 refers is a problem with black and ruff disagreeing about blank lines :shrug:
     eval_example.set_config(ruff_ignore=['E711', 'E712', 'I001'])
 
-    if prefix_settings.get('lint') != 'skip':
-        if eval_example.update_examples:
-            eval_example.format(example)
-        else:
-            eval_example.lint(example)
-
     if prefix_settings.get('test') != 'skip':
         if eval_example.update_examples:
             eval_example.run_print_update(example)
         else:
             eval_example.run_print_check(example)
+
+    if prefix_settings.get('lint') != 'skip':
+        if eval_example.update_examples:
+            eval_example.format(example)
+        else:
+            eval_example.lint(example)