Add unit-tests

tests/test_utils.py

@@ -0,0 +1,27 @@
+import pytest
+from redmine_reporter.utils import hours_to_human, get_month_name_from_range, get_version
+
+
+def test_hours_to_human():
+    assert hours_to_human(0) == "0ч"
+    assert hours_to_human(1.0) == "1ч"
+    assert hours_to_human(2.5) == "2ч 30м"
+    assert hours_to_human(0.75) == "45м"
+    assert hours_to_human(3.1666) == "3ч 10м"  # ≈ 3ч 10м
+
+
+def test_get_month_name_from_range():
+    assert get_month_name_from_range("2026-01-01", "2026-01-31") == "Январь"
+    assert get_month_name_from_range("2025-12-01", "2026-02-15") == "Февраль"  # берётся to_date
+    assert get_month_name_from_range("invalid", "also_invalid") == "Январь"  # fallback
+
+
+def test_get_version():
+    class MockIssue:
+        pass
+    issue_with = MockIssue()
+    issue_with.fixed_version = "v2.5.0"
+    assert get_version(issue_with) == "v2.5.0"
+
+    issue_without = MockIssue()
+    assert get_version(issue_without) == "<N/A>"