// Test script for process management functionality

print("=== Process Management Tests ===");

// Test 1: which function with existing command
print("\n--- Test 1: Which Function (Existing Command) ---");
let echo_path = which("echo");
if echo_path != () {
    assert_true(echo_path.len() > 0, "Echo path should not be empty");
    print(`✓ which("echo") found at: ${echo_path}`);
} else {
    // Try platform-specific commands
    let cmd_path = which("cmd");
    let sh_path = which("sh");
    assert_true(cmd_path != () || sh_path != (), "Should find either cmd or sh");
    print("✓ which() function works with platform-specific commands");
}

// Test 2: which function with nonexistent command
print("\n--- Test 2: Which Function (Nonexistent Command) ---");
let nonexistent = which("nonexistent_command_12345");
assert_true(nonexistent == (), "Nonexistent command should return ()");
print("✓ which() correctly handles nonexistent commands");

// Test 3: process_list function
print("\n--- Test 3: Process List Function ---");
let all_processes = process_list("");
assert_true(all_processes.len() > 0, "Should find at least one running process");
print(`✓ process_list("") found ${all_processes.len()} processes`);

// Test 4: process info properties
print("\n--- Test 4: Process Info Properties ---");
if all_processes.len() > 0 {
    let first_process = all_processes[0];
    assert_true(first_process.pid > 0, "Process PID should be positive");
    assert_true(first_process.name.len() > 0, "Process name should not be empty");
    assert_true(first_process.memory >= 0.0, "Process memory should be non-negative");
    assert_true(first_process.cpu >= 0.0, "Process CPU should be non-negative");
    print(`✓ Process properties: PID=${first_process.pid}, Name=${first_process.name}`);
}

// Test 5: process_list with pattern
print("\n--- Test 5: Process List with Pattern ---");
if all_processes.len() > 0 {
    let test_process = all_processes[0];
    let filtered_processes = process_list(test_process.name);
    assert_true(filtered_processes.len() >= 1, "Should find at least the test process");
    
    // Verify all filtered processes contain the pattern
    for process in filtered_processes {
        assert_true(process.name.contains(test_process.name), "Filtered process should contain pattern");
    }
    print(`✓ process_list("${test_process.name}") found ${filtered_processes.len()} matching processes`);
}

// Test 6: process_list with nonexistent pattern
print("\n--- Test 6: Process List with Nonexistent Pattern ---");
let empty_list = process_list("nonexistent_process_12345");
assert_true(empty_list.len() == 0, "Should find no processes with nonexistent pattern");
print("✓ process_list() correctly handles nonexistent patterns");

// Test 7: kill function with nonexistent process
print("\n--- Test 7: Kill Function (Nonexistent Process) ---");
let kill_result = kill("nonexistent_process_12345");
assert_true(
    kill_result.contains("No matching processes") || kill_result.contains("Successfully killed"),
    "Kill should handle nonexistent processes gracefully"
);
print(`✓ kill("nonexistent_process_12345") result: ${kill_result}`);

// Test 8: Common system commands detection
print("\n--- Test 8: Common System Commands Detection ---");
let common_commands = ["echo", "ls", "cat", "grep", "awk", "sed"];
let windows_commands = ["cmd", "powershell", "notepad", "tasklist"];

let found_commands = [];
for cmd in common_commands {
    let path = which(cmd);
    if path != () {
        found_commands.push(cmd);
    }
}

for cmd in windows_commands {
    let path = which(cmd);
    if path != () {
        found_commands.push(cmd);
    }
}

assert_true(found_commands.len() > 0, "Should find at least one common command");
print(`✓ Found common commands: ${found_commands}`);

// Test 9: Process filtering accuracy
print("\n--- Test 9: Process Filtering Accuracy ---");
if all_processes.len() > 0 {
    let test_process = all_processes[0];
    let filtered = process_list(test_process.name);
    
    // All filtered processes should contain the pattern
    let all_match = true;
    for process in filtered {
        if !process.name.contains(test_process.name) {
            all_match = false;
            break;
        }
    }
    assert_true(all_match, "All filtered processes should contain the search pattern");
    print("✓ Process filtering is accurate");
}

// Test 10: Process management performance
print("\n--- Test 10: Process Management Performance ---");
let start_time = timestamp();
let perf_processes = process_list("");
let end_time = timestamp();
let duration = end_time - start_time;

assert_true(duration < 5000, "Process listing should complete within 5 seconds");
assert_true(perf_processes.len() > 0, "Performance test should still return processes");
print(`✓ process_list() completed in ${duration}ms`);

// Test 11: which command performance
print("\n--- Test 11: Which Command Performance ---");
let which_start = timestamp();
let which_result = which("echo");
let which_end = timestamp();
let which_duration = which_end - which_start;

assert_true(which_duration < 1000, "which() should complete within 1 second");
print(`✓ which("echo") completed in ${which_duration}ms`);

// Test 12: Cross-platform process operations
print("\n--- Test 12: Cross-Platform Process Operations ---");
let platform_specific_found = false;

// Try Windows-specific
let cmd_found = which("cmd");
if cmd_found != () {
    platform_specific_found = true;
    print("✓ Windows platform detected (cmd found)");
}

// Try Unix-specific
let sh_found = which("sh");
if sh_found != () {
    platform_specific_found = true;
    print("✓ Unix-like platform detected (sh found)");
}

assert_true(platform_specific_found, "Should detect platform-specific commands");

print("\n=== All Process Management Tests Passed! ===");