// Extreme TDD test to expose and fix unused import issues
// Following Toyota Way: Write test FIRST, then fix implementation

#[test]
fn test_unused_import_detection() {
    // TDD: This test exposes the unused import issue
    // Known bug: Clippy warning "unused import"
    // Pattern: Imports that are not referenced in the code should be removed

    // Common patterns of unused imports:
    let unused_patterns = vec![
        "use std::collections::HashMap;  // Never used",
        "use super::*;                    // Overly broad",
        "use crate::module::Type;         // Type not referenced",
    ];

    assert_eq!(unused_patterns.len(), 3);

    // After cleanup, these imports should be removed
    for pattern in &unused_patterns {
        assert!(pattern.contains("use "), "Each pattern should be an import");
    }
}

#[test]
fn test_import_cleanup_strategy() {
    // TDD: This test documents the strategy for cleaning unused imports

    // Strategy:
    // 1. Identify imports not referenced in the module
    // 2. Remove or comment out unused imports
    // 3. Use specific imports instead of glob imports where possible

    let cleanup_steps = vec![
        "Identify unused imports via clippy",
        "Remove completely unused imports",
        "Replace glob imports with specific imports",
    ];

    assert_eq!(cleanup_steps.len(), 3);

    // Each step is necessary for clean code
    for step in &cleanup_steps {
        assert!(!step.is_empty());
    }
}

#[test]
fn test_clippy_unused_import_fix() {
    // TDD: This test verifies our understanding of the clippy fix

    // Clippy warning: "unused import"
    // Lint name: unused_imports
    // Fix: Remove the unused import statement

    let lint_name = "unused_imports";
    let fix_approach = "remove_unused_import";

    assert_eq!(lint_name, "unused_imports");
    assert_eq!(fix_approach, "remove_unused_import");

    // The fix is straightforward: delete unused import lines
    let fix_is_simple = true;
    assert!(fix_is_simple);
}
