Add tests.

tests/test_version.py

@@ -0,0 +1,104 @@
+"""Tests for version parsing and normalization functions."""
+
+import pytest
+
+from debian_todo import (
+    parse_details,
+    is_prerelease_version,
+    normalize_upstream_version,
+)
+
+
+class TestParseDetails:
+    """Tests for parse_details function."""
+
+    def test_with_current_version(self):
+        details = "1.2.3 (currently in unstable: 1.2.2-1)"
+        new, current = parse_details(details)
+        assert new == "1.2.3"
+        assert current == "1.2.2-1"
+
+    def test_without_current_version(self):
+        details = "1.2.3"
+        new, current = parse_details(details)
+        assert new == "1.2.3"
+        assert current is None
+
+    def test_with_epoch_in_current(self):
+        details = "2.0.0 (currently in unstable: 1:1.9.0-2)"
+        new, current = parse_details(details)
+        assert new == "2.0.0"
+        assert current == "1:1.9.0-2"
+
+    def test_strips_whitespace(self):
+        details = "  1.2.3  (currently in unstable:  1.2.2-1  )  "
+        new, current = parse_details(details)
+        assert new == "1.2.3"
+        assert current == "1.2.2-1"
+
+    def test_empty_string(self):
+        new, current = parse_details("")
+        assert new == ""
+        assert current is None
+
+
+class TestIsPrereleaseVersion:
+    """Tests for is_prerelease_version function."""
+
+    def test_alpha_version(self):
+        assert is_prerelease_version("1.0.0alpha1") is True
+        assert is_prerelease_version("1.0.0-alpha2") is True
+        assert is_prerelease_version("1.0.0.alpha") is True
+
+    def test_beta_version(self):
+        assert is_prerelease_version("1.0.0beta1") is True
+        assert is_prerelease_version("1.0.0-beta2") is True
+        assert is_prerelease_version("2.0b1") is True
+
+    def test_rc_version(self):
+        assert is_prerelease_version("1.0.0rc1") is True
+        assert is_prerelease_version("1.0.0-rc2") is True
+        assert is_prerelease_version("1.0.0.rc3") is True
+
+    def test_short_prerelease(self):
+        assert is_prerelease_version("1.0a1") is True
+        assert is_prerelease_version("1.0b2") is True
+
+    def test_stable_version(self):
+        assert is_prerelease_version("1.0.0") is False
+        assert is_prerelease_version("2.3.4") is False
+        assert is_prerelease_version("1.0.0-1") is False
+
+    def test_version_with_current(self):
+        assert is_prerelease_version("1.0.0rc1 (currently in unstable: 0.9.0-1)") is True
+        assert is_prerelease_version("1.0.0 (currently in unstable: 0.9.0-1)") is False
+
+    def test_case_insensitive(self):
+        assert is_prerelease_version("1.0.0Alpha1") is True
+        assert is_prerelease_version("1.0.0BETA1") is True
+        assert is_prerelease_version("1.0.0RC1") is True
+
+
+class TestNormalizeUpstreamVersion:
+    """Tests for normalize_upstream_version function."""
+
+    def test_simple_version(self):
+        assert normalize_upstream_version("1.2.3") == "1.2.3"
+
+    def test_strips_debian_revision(self):
+        assert normalize_upstream_version("1.2.3-1") == "1.2.3"
+        assert normalize_upstream_version("1.2.3-2ubuntu1") == "1.2.3"
+
+    def test_strips_epoch(self):
+        assert normalize_upstream_version("1:1.2.3") == "1.2.3"
+        assert normalize_upstream_version("2:1.2.3") == "1.2.3"
+
+    def test_strips_epoch_and_revision(self):
+        assert normalize_upstream_version("1:1.2.3-4") == "1.2.3"
+
+    def test_strips_whitespace(self):
+        assert normalize_upstream_version("  1.2.3  ") == "1.2.3"
+
+    def test_version_with_hyphen_in_upstream(self):
+        # Only the last hyphen is treated as revision separator
+        assert normalize_upstream_version("1.2.3-beta-1") == "1.2.3-beta"