Add tests to increase coverage

pep_sphinx_extensions/tests/pep_lint/test_pep_lint.py

@@ -2,6 +2,8 @@
 
 import check_peps  # NoQA: inserted into sys.modules in conftest.py
 
+from ..conftest import PEP_ROOT
+
 PEP_9002 = Path(__file__).parent.parent / "peps" / "pep-9002.rst"
 
 
@@ -46,3 +48,10 @@ def test_with_fake_pep():
         (20, "Resolution must be a valid thread URL"),
         (23, "Use the :pep:`NNN` role to refer to PEPs"),
     ]
+
+
+def test_skip_direct_pep_link_check():
+    filename = PEP_ROOT / "pep-0009.rst"  # in SKIP_DIRECT_PEP_LINK_CHECK
+    content = filename.read_text(encoding="utf-8").splitlines()
+    warnings = list(check_peps.check_peps(filename, content))
+    assert warnings == []

pep_sphinx_extensions/tests/pep_lint/test_post_url.py

@@ -79,6 +79,20 @@ def test_validate_post_history_valid(body: str):
     assert warnings == [], warnings
 
 
+@pytest.mark.parametrize(
+    "body",
+    [
+        "31-Jul-2015 <https://discuss.python.org/t/123456>`__,",
+        "`31-Jul-2015 <https://discuss.python.org/t/123456>",
+    ],
+)
+def test_validate_post_history_unbalanced_link(body: str):
+    warnings = [warning for (_, warning) in check_peps._validate_post_history(1, body)]
+    assert warnings == [
+        "post line must be a date or both start with “`” and end with “>`__”"
+    ], warnings
+
+
 @pytest.mark.parametrize(
     "line",
     [
@@ -118,6 +132,20 @@ def test_validate_resolution_invalid(line: str):
     assert warnings == ["Resolution must be a valid thread URL"], warnings
 
 
+@pytest.mark.parametrize(
+    "line",
+    [
+        "01-Jan-2000 <https://mail.python.org/pipermail/list-name/0000-Month/0123456.html>`__",
+        "`01-Jan-2000 <https://mail.python.org/pipermail/list-name/0000-Month/0123456.html>",
+    ],
+)
+def test_validate_resolution_unbalanced_link(line: str):
+    warnings = [warning for (_, warning) in check_peps._validate_resolution(1, line)]
+    assert warnings == [
+        "Resolution line must be a link or both start with “`” and end with “>`__”"
+    ], warnings
+
+
 @pytest.mark.parametrize(
     "thread_url",
     [