#[cfg(test)]
mod tests {
    use crate::models::{AuthorStats, CommitFrequency, RepositoryInfo};
    use serde_json;

    #[test]
    fn test_author_stats_serde() {
        let stats = AuthorStats {
            name: "Test User".to_string(),
            email: "test@example.com".to_string(),
            commits: 10,
            lines_added: 100,
            lines_removed: 50,
            net_change: 50,
            files_changed: 5,
            first_commit: "2024-01-01T00:00:00Z".to_string(),
            last_commit: "2024-01-15T00:00:00Z".to_string(),
            active_days: 5,
            average_commits_per_day: 2.0,
            busiest_day: "Monday".to_string(),
            busiest_day_count: 5,
            commit_messages: vec!["feat: add feature".to_string()],
        };

        let json = serde_json::to_string(&stats).unwrap();
        let deserialized: AuthorStats = serde_json::from_str(&json).unwrap();
        assert_eq!(deserialized.name, stats.name);
        assert_eq!(deserialized.commits, stats.commits);
    }

    #[test]
    fn test_repository_info_serde() {
        let info = RepositoryInfo {
            path: "/test/repo".to_string(),
            branch: Some("main".to_string()),
            remote_url: Some("https://github.com/test/repo".to_string()),
            total_commits: 100,
            total_authors: 5,
            repository_age_days: 365,
        };

        let json = serde_json::to_string(&info).unwrap();
        let deserialized: RepositoryInfo = serde_json::from_str(&json).unwrap();
        assert_eq!(deserialized.path, info.path);
        assert_eq!(deserialized.total_commits, info.total_commits);
    }

    #[test]
    fn test_commit_frequency_defaults() {
        let freq = CommitFrequency::default();
        assert_eq!(freq.total_commits, 0);
        assert_eq!(freq.commits_per_day, 0.0);
    }
}