from datetime import datetime
from src.models.data_structures import (
    Author,
    Commit,
    FileChange,
    CommitAnalysis,
    CodeChurnAnalysis,
    RiskyCommitAnalysis,
    VelocityAnalysis,
)


class TestAuthor:
    """Test Author dataclass."""

    def test_author_creation(self):
        """Test creating an Author."""
        author = Author(
            name="John Doe",
            email="john@example.com",
            commit_count=100,
        )
        assert author.name == "John Doe"
        assert author.email == "john@example.com"
        assert author.commit_count == 100


class TestCommit:
    """Test Commit dataclass."""

    def test_commit_creation(self):
        """Test creating a Commit."""
        commit = Commit(
            sha="abc123",
            message="Test commit",
            author="John Doe",
            author_email="john@example.com",
            timestamp=datetime.now(),
        )
        assert commit.sha == "abc123"
        assert commit.message == "Test commit"


class TestCommitAnalysis:
    """Test CommitAnalysis dataclass."""

    def test_commit_analysis_creation(self):
        """Test creating a CommitAnalysis."""
        analysis = CommitAnalysis(
            total_commits=100,
            unique_authors=5,
            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,
        )
        assert analysis.total_commits == 100
        assert analysis.unique_authors == 5


class TestCodeChurnAnalysis:
    """Test CodeChurnAnalysis dataclass."""

    def test_code_churn_analysis_creation(self):
        """Test creating a CodeChurnAnalysis."""
        analysis = CodeChurnAnalysis(
            total_lines_added=5000,
            total_lines_deleted=1000,
            net_change=4000,
            churn_by_file={},
            churn_by_author={},
            high_churn_commits=[],
            average_churn_per_commit=50.0,
        )
        assert analysis.total_lines_added == 5000
        assert analysis.net_change == 4000