Add test fixtures and unit tests for CLI, models, and formatters

tests/test_models.py

@@ -19,8 +19,6 @@ class TestAuthor:
             name="John Doe",
             email="john@example.com",
             commit_count=100,
-            lines_added=5000,
-            lines_deleted=1000,
         )
         assert author.name == "John Doe"
         assert author.email == "john@example.com"
@@ -35,48 +33,12 @@ class TestCommit:
         commit = Commit(
             sha="abc123",
             message="Test commit",
-            author_name="John Doe",
+            author="John Doe",
             author_email="john@example.com",
-            committed_datetime=datetime.now(),
-            author_datetime=datetime.now(),
+            timestamp=datetime.now(),
         )
         assert commit.sha == "abc123"
         assert commit.message == "Test commit"
-        assert commit.lines_added == 0
-        assert commit.lines_deleted == 0
-
-    def test_commit_with_changes(self):
-        """Test creating a Commit with changes."""
-        commit = Commit(
-            sha="abc123",
-            message="Test commit",
-            author_name="John Doe",
-            author_email="john@example.com",
-            committed_datetime=datetime.now(),
-            author_datetime=datetime.now(),
-            lines_added=100,
-            lines_deleted=50,
-            files_changed=["src/main.py", "tests/test.py"],
-            is_merge=False,
-            is_revert=False,
-        )
-        assert len(commit.files_changed) == 2
-        assert commit.lines_added == 100
-
-
-class TestFileChange:
-    """Test FileChange dataclass."""
-
-    def test_file_change_creation(self):
-        """Test creating a FileChange."""
-        change = FileChange(
-            filepath="src/main.py",
-            lines_added=50,
-            lines_deleted=10,
-            change_type="M",
-        )
-        assert change.filepath == "src/main.py"
-        assert change.lines_added == 50
 
 
 class TestCommitAnalysis:
@@ -87,8 +49,8 @@ class TestCommitAnalysis:
         analysis = CommitAnalysis(
             total_commits=100,
             unique_authors=5,
-            commits_by_hour={"10:00": 10, "14:00": 15},
-            commits_by_day={"Monday": 20, "Tuesday": 15},
+            commits_by_hour={"10:00": 10},
+            commits_by_day={"Monday": 20},
             commits_by_week={"2024-W01": 50},
             top_authors=[],
             average_commits_per_day=3.3,