get rid of dedicated doctest run

pyproject.toml

@@ -54,6 +54,7 @@ lint = [
 test = [
     'pytest',
     'pytest-cov',
+    'pytest-pythonhashseed',
     'pytest-ruff',
     'ruff==0.4.10',
 ]
@@ -67,17 +68,21 @@ Homepage = 'https://github.com/mr-mixas/Nested-Diff.py'
 Repository = 'https://github.com/mr-mixas/Nested-Diff.py.git'
 
 [tool.pytest.ini_options]
-addopts = """
-          --cov=nested_diff \
-          --cov-fail-under=99 \
-          --cov-report term-missing \
-          --no-cov-on-fail \
-          --ruff \
-          --ruff-format \
-          --verbosity=2 \
-          """
+addopts = [
+    '--cov=nested_diff',
+    '--cov-fail-under=99',
+    '--cov-report', 'term-missing',
+    '--no-cov-on-fail',
+    '--doctest-modules',
+    '--doctest-glob=*.md',
+    '--pythonhashseed', '1',
+    '--ruff',
+    '--ruff-format',
+    '--verbosity=2',
+]
+
 doctest_optionflags = 'NORMALIZE_WHITESPACE'
-testpaths = 'nested_diff tests'
+testpaths = 'nested_diff tests *.md'
 
 [tool.ruff]
 extend-exclude = [

tests/data/gen_standard.py

@@ -15,7 +15,7 @@ def format_test(**kwargs):
         }},""".format(**kwargs)
 
 
-def generate_tests(source_dir=sys.argv[1]):
+def generate_tests(source_dir):
     tests = []
     for file_name in sorted(os.listdir(source_dir)):
         with open(os.path.join(source_dir, file_name)) as f:
@@ -66,4 +66,4 @@ def get_tests():
 
 
 if __name__ == '__main__':
-    generate_tests()
+    generate_tests(sys.argv[1])

tests/test_misc.py

@@ -0,0 +1,5 @@
+import os
+
+
+def test_pythonhashseed():
+    assert os.environ['PYTHONHASHSEED'] == '1'

tox.ini

@@ -10,22 +10,15 @@ extras =
     cli
     test
 
-setenv =
-    PYTHONHASHSEED = 1
-
 [testenv:extended]
 commands =
-    pytest --doctest-modules
-    python -m doctest HOWTO.md README.md
+    pytest
     darglint nested_diff
 
 extras =
     {[testenv:essential]extras}
     lint
 
-setenv =
-    PYTHONHASHSEED = 1
-
 # pyproject.toml not support yet
 [darglint]
 docstring_style=google