pmat 3.28.2

PMAT - Zero-config AI context generation and code quality toolkit (CLI, MCP, HTTP)
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#[cfg_attr(coverage_nightly, coverage(off))]
#[cfg(test)]
mod coverage_tests {
    use super::*;

    /// A real directory with one analysable source file.
    ///
    /// These tests used to pass `"/nonexistent/path"` and assert `is_ok()`,
    /// which meant they exercised none of the options they are named for — the
    /// tools walked an absent tree, found nothing, and reported success. Now
    /// that missing paths are rejected (GH #639) the fixture has to be real.
    fn fixture_dir() -> tempfile::TempDir {
        let dir = tempfile::TempDir::new().expect("tempdir");
        std::fs::write(
            dir.path().join("sample.rs"),
            "fn sample(a: i32) -> i32 {\n    if a > 2 {\n        a * 3\n    } else {\n        a\n    }\n}\n",
        )
        .expect("write fixture");
        dir
    }
    use serde_json::json;
    use tokio_util::sync::CancellationToken;

    fn test_extra() -> RequestHandlerExtra {
        RequestHandlerExtra::new("test-request".to_string(), CancellationToken::new())
    }

    // === ComplexityTool Tests ===

    #[test]
    fn test_complexity_tool_new() {
        let tool = ComplexityTool::new();
        // Just verify creation succeeds
        let _ = tool;
    }

    #[test]
    fn test_complexity_tool_default() {
        let tool = ComplexityTool;
        let _ = tool;
    }

    #[tokio::test]
    async fn test_complexity_tool_invalid_args() {
        let tool = ComplexityTool::new();
        let args = json!({"invalid": "args"});
        let result = tool.handle(args, test_extra()).await;
        assert!(result.is_err());
    }

    #[tokio::test]
    async fn test_complexity_tool_empty_paths() {
        let tool = ComplexityTool::new();
        let args = json!({"paths": []});
        let result = tool.handle(args, test_extra()).await;
        // Empty paths should return error from tool_functions
        assert!(result.is_err());
    }

    #[tokio::test]
    async fn test_complexity_tool_with_all_options() {
        let tool = ComplexityTool::new();
        let fixture = fixture_dir();
        let fixture_dir_path = fixture.path().display().to_string();
        let args = json!({
            "paths": [fixture_dir_path.as_str()],
            "top_files": 5,
            "threshold": 15
        });
        let result = tool.handle(args, test_extra()).await;
        assert!(result.is_ok());
    }

    // === SatdTool Tests ===

    #[test]
    fn test_satd_tool_new() {
        let tool = SatdTool::new();
        let _ = tool;
    }

    #[test]
    fn test_satd_tool_default() {
        let tool = SatdTool;
        let _ = tool;
    }

    #[tokio::test]
    async fn test_satd_tool_invalid_args() {
        let tool = SatdTool::new();
        let args = json!({"invalid": "args"});
        let result = tool.handle(args, test_extra()).await;
        assert!(result.is_err());
    }

    #[tokio::test]
    async fn test_satd_tool_empty_paths() {
        let tool = SatdTool::new();
        let args = json!({"paths": []});
        let result = tool.handle(args, test_extra()).await;
        assert!(result.is_err());
    }

    #[tokio::test]
    async fn test_satd_tool_with_include_resolved() {
        let tool = SatdTool::new();
        let fixture = fixture_dir();
        let fixture_dir_path = fixture.path().display().to_string();
        let args = json!({
            "paths": [fixture_dir_path.as_str()],
            "include_resolved": true
        });
        let result = tool.handle(args, test_extra()).await;
        assert!(result.is_ok());
    }

    // === DeadCodeTool Tests ===

    #[test]
    fn test_dead_code_tool_new() {
        let tool = DeadCodeTool::new();
        let _ = tool;
    }

    #[test]
    fn test_dead_code_tool_default() {
        let tool = DeadCodeTool;
        let _ = tool;
    }

    #[tokio::test]
    async fn test_dead_code_tool_invalid_args() {
        let tool = DeadCodeTool::new();
        let args = json!({"invalid": "args"});
        let result = tool.handle(args, test_extra()).await;
        assert!(result.is_err());
    }

    #[tokio::test]
    async fn test_dead_code_tool_empty_paths() {
        let tool = DeadCodeTool::new();
        let args = json!({"paths": []});
        let result = tool.handle(args, test_extra()).await;
        assert!(result.is_err());
    }

    #[tokio::test]
    async fn test_dead_code_tool_with_include_tests() {
        let tool = DeadCodeTool::new();
        let fixture = fixture_dir();
        let fixture_dir_path = fixture.path().display().to_string();
        let args = json!({
            "paths": [fixture_dir_path.as_str()],
            "include_tests": true
        });
        let result = tool.handle(args, test_extra()).await;
        assert!(result.is_ok());
    }

    // === LintHotspotTool Tests ===

    #[test]
    fn test_lint_hotspot_tool_new() {
        let tool = LintHotspotTool::new();
        let _ = tool;
    }

    #[test]
    fn test_lint_hotspot_tool_default() {
        let tool = LintHotspotTool;
        let _ = tool;
    }

    #[tokio::test]
    async fn test_lint_hotspot_tool_invalid_args() {
        let tool = LintHotspotTool::new();
        let args = json!({"invalid": "args"});
        let result = tool.handle(args, test_extra()).await;
        assert!(result.is_err());
    }

    #[tokio::test]
    async fn test_lint_hotspot_tool_empty_paths() {
        let tool = LintHotspotTool::new();
        let args = json!({"paths": []});
        let result = tool.handle(args, test_extra()).await;
        assert!(result.is_err());
    }

    #[tokio::test]
    async fn test_lint_hotspot_tool_with_top_files() {
        let tool = LintHotspotTool::new();
        let args = json!({
            "paths": ["/nonexistent/path"],
            "top_files": 5
        });
        let result = tool.handle(args, test_extra()).await;
        // Non-directory path returns error
        assert!(result.is_err());
    }

    // === ChurnTool Tests ===

    #[test]
    fn test_churn_tool_new() {
        let tool = ChurnTool::new();
        let _ = tool;
    }

    #[test]
    fn test_churn_tool_default() {
        let tool = ChurnTool;
        let _ = tool;
    }

    #[tokio::test]
    async fn test_churn_tool_invalid_args() {
        let tool = ChurnTool::new();
        let args = json!({"invalid": "args"});
        let result = tool.handle(args, test_extra()).await;
        assert!(result.is_err());
    }

    #[tokio::test]
    async fn test_churn_tool_empty_paths() {
        let tool = ChurnTool::new();
        let args = json!({"paths": []});
        let result = tool.handle(args, test_extra()).await;
        assert!(result.is_err());
    }

    #[tokio::test]
    async fn test_churn_tool_with_all_options() {
        let tool = ChurnTool::new();
        let args = json!({
            "paths": ["/nonexistent/path"],
            "days": 30,
            "top_files": 10
        });
        let result = tool.handle(args, test_extra()).await;
        // Nonexistent path for git analysis returns error
        assert!(result.is_err());
    }

    // === CouplingTool Tests ===

    #[test]
    fn test_coupling_tool_new() {
        let tool = CouplingTool::new();
        let _ = tool;
    }

    #[test]
    fn test_coupling_tool_default() {
        let tool = CouplingTool;
        let _ = tool;
    }

    #[tokio::test]
    async fn test_coupling_tool_invalid_args() {
        let tool = CouplingTool::new();
        let args = json!({"invalid": "args"});
        let result = tool.handle(args, test_extra()).await;
        assert!(result.is_err());
    }

    #[tokio::test]
    async fn test_coupling_tool_empty_paths() {
        let tool = CouplingTool::new();
        let args = json!({"paths": []});
        let result = tool.handle(args, test_extra()).await;
        assert!(result.is_err());
    }

    #[tokio::test]
    async fn test_coupling_tool_with_threshold() {
        let tool = CouplingTool::new();
        let args = json!({
            "paths": ["/nonexistent/path"],
            "threshold": 0.5
        });
        let result = tool.handle(args, test_extra()).await;
        // Analysis on nonexistent path may fail
        assert!(result.is_err());
    }
}