Test version handling functions

tests/test_blurb.py

@@ -45,6 +45,63 @@ def test_unsanitize_section_changed(section, expected):
     assert unsanitized == expected
 
 
+@pytest.mark.parametrize(
+    "version1, version2",
+    (
+        ("2", "3"),
+        ("3.5.0a1", "3.5.0b1"),
+        ("3.5.0a1", "3.5.0rc1"),
+        ("3.5.0a1", "3.5.0"),
+        ("3.6.0b1", "3.6.0b2"),
+        ("3.6.0b1", "3.6.0rc1"),
+        ("3.6.0b1", "3.6.0"),
+        ("3.7.0rc1", "3.7.0rc2"),
+        ("3.7.0rc1", "3.7.0"),
+        ("3.8", "3.8.1"),
+    ),
+)
+def test_version_key(version1, version2):
+    # Act
+    key1 = blurb.version_key(version1)
+    key2 = blurb.version_key(version2)
+
+    # Assert
+    assert key1 < key2
+
+
+def test_glob_versions(fs):
+    # Arrange
+    fake_version_blurbs = (
+        "Misc/NEWS.d/3.7.0.rst",
+        "Misc/NEWS.d/3.7.0a1.rst",
+        "Misc/NEWS.d/3.7.0a2.rst",
+        "Misc/NEWS.d/3.7.0b1.rst",
+        "Misc/NEWS.d/3.7.0b2.rst",
+        "Misc/NEWS.d/3.7.0rc1.rst",
+        "Misc/NEWS.d/3.7.0rc2.rst",
+        "Misc/NEWS.d/3.9.0b1.rst",
+        "Misc/NEWS.d/3.12.0a1.rst",
+    )
+    for fn in fake_version_blurbs:
+        fs.create_file(fn)
+
+    # Act
+    versions = blurb.glob_versions()
+
+    # Assert
+    assert versions == [
+        "3.12.0a1",
+        "3.9.0b1",
+        "3.7.0",
+        "3.7.0rc2",
+        "3.7.0rc1",
+        "3.7.0b2",
+        "3.7.0b1",
+        "3.7.0a2",
+        "3.7.0a1",
+    ]
+
+
 def test_glob_blurbs_next(fs):
     # Arrange
     fake_news_entries = (
@@ -104,6 +161,22 @@ def test_glob_blurbs_sort_order(fs):
     assert filenames == expected
 
 
+@pytest.mark.parametrize(
+    "version, expected",
+    (
+            ("next", "next"),
+            ("3.12.0a1", "3.12.0 alpha 1"),
+            ("3.12.0b2", "3.12.0 beta 2"),
+            ("3.12.0rc2", "3.12.0 release candidate 2"),
+            ("3.12.0", "3.12.0 final"),
+            ("3.12.1", "3.12.1 final"),
+    ),
+)
+def test_printable_version(version, expected):
+    # Act / Assert
+    assert blurb.printable_version(version) == expected
+
+
 @pytest.mark.parametrize(
     "news_entry, expected_section",
     (