Test Definition

/**
 * Define a standard test case
 * @param {string} testName - Descriptive name for the test
 * @param {Function} callback - Test function receiving assert object
 */
QUnit.test(testName, callback)

import QUnit from "qunit";

QUnit.test("basic arithmetic", function(assert) {
  assert.strictEqual(2 + 2, 4, "addition works");
  assert.strictEqual(5 - 3, 2, "subtraction works");
});

QUnit.test("async operation", function(assert) {
  const done = assert.async();
  
  setTimeout(() => {
    assert.ok(true, "async test completed");
    done();
  }, 100);
});

/**
 * Skip a test (will not run but appears in results)
 * @param {string} testName - Test name
 * @param {Function} [callback] - Test function (optional for skip)
 */
QUnit.skip(testName, callback)

/**
 * TODO test (expected to fail, used for test-driven development)
 * @param name - Test name  
 * @param callback - Test function
 */
function todo(name: string, callback: (assert: Assert) => void): void;

/**
 * Only test (run this test exclusively, skip others)
 * @param name - Test name
 * @param callback - Test function
 */
function only(name: string, callback: (assert: Assert) => void): void;

QUnit.skip("feature not implemented yet", function(assert) {
  // This test will be skipped
  assert.ok(false);
});

QUnit.todo("fix this failing test", function(assert) {
  // This test is expected to fail
  assert.strictEqual(buggyFunction(), "expected");
});

QUnit.only("debug this specific test", function(assert) {
  // Only this test will run when .only() is used
  assert.ok(true);
});

/**
 * Conditionally run test based on condition
 * @param name - Test name
 * @param condition - Boolean condition to evaluate
 * @param callback - Test function
 */
function if(name: string, condition: boolean, callback: (assert: Assert) => void): void;

QUnit.test.if("browser-specific test", 
  typeof window !== "undefined", 
  function(assert) {
    assert.ok(window.navigator, "browser environment detected");
  }
);

/**
 * Run test for each item in dataset
 * @param name - Test name template
 * @param dataset - Array of test data or object with named datasets
 * @param callback - Test function receiving data and assert
 */
function each(
  name: string, 
  dataset: any[] | Record<string, any>, 
  callback: (data: any, assert: Assert) => void
): void;

QUnit.test.each("validate input", [
  { input: "hello", expected: true },
  { input: "", expected: false },
  { input: null, expected: false }
], function(data, assert) {
  const result = validateInput(data.input);
  assert.strictEqual(result, data.expected);
});

// Named datasets
QUnit.test.each("math operations", {
  "addition": { a: 2, b: 3, expected: 5, op: "+" },
  "subtraction": { a: 5, b: 2, expected: 3, op: "-" }
}, function(data, assert) {
  const result = calculate(data.a, data.b, data.op);
  assert.strictEqual(result, data.expected);
});

/**
 * Define a test module
 * @param name - Module name
 * @param callback - Module definition function
 */
function module(name: string, callback?: () => void): void;

/**
 * Define a test module with hooks
 * @param name - Module name
 * @param options - Module configuration with lifecycle hooks
 * @param callback - Module definition function
 */
function module(
  name: string, 
  options: ModuleOptions, 
  callback?: () => void
): void;

interface ModuleOptions {
  /** Run once before all tests in module */
  before?: () => void;
  /** Run before each test in module */
  beforeEach?: (assert: Assert) => void;
  /** Run after each test in module */
  afterEach?: (assert: Assert) => void;
  /** Run once after all tests in module */
  after?: () => void;
}

QUnit.module("User Management", function() {
  QUnit.test("user creation", function(assert) {
    assert.ok(true);
  });
  
  QUnit.test("user deletion", function(assert) {
    assert.ok(true);
  });
});

// Module with hooks
QUnit.module("Database Tests", {
  before: function() {
    // Setup database connection
    this.db = new Database();
  },
  
  beforeEach: function() {
    // Clear test data before each test
    this.db.clear();
  },
  
  afterEach: function() {
    // Cleanup after each test
    this.db.cleanup();
  },
  
  after: function() {
    // Close database connection
    this.db.close();
  }
}, function() {
  QUnit.test("data insertion", function(assert) {
    // Test has access to this.db
    assert.ok(this.db.insert({ name: "test" }));
  });
});

/**
 * Skip entire module (no tests will run)
 * @param name - Module name
 * @param options - Module options (optional)
 * @param callback - Module definition function (optional)
 */
function skip(
  name: string, 
  options?: ModuleOptions, 
  callback?: () => void
): void;

/**
 * TODO module (all tests expected to fail)
 * @param name - Module name
 * @param options - Module options (optional)
 * @param callback - Module definition function
 */
function todo(
  name: string, 
  options?: ModuleOptions, 
  callback: () => void
): void;

/**
 * Only module (run only this module, skip others)
 * @param name - Module name
 * @param options - Module options (optional)
 * @param callback - Module definition function
 */
function only(
  name: string, 
  options?: ModuleOptions, 
  callback: () => void
): void;

/**
 * Conditional module execution
 * @param name - Module name
 * @param condition - Boolean condition to evaluate
 * @param options - Module options (optional)
 * @param callback - Module definition function
 */
function if(
  name: string, 
  condition: boolean, 
  options?: ModuleOptions, 
  callback?: () => void
): void;

/**
 * Manually start test suite (when autostart is false)
 * @param count - Number of expected start calls (optional)
 */
function start(count?: number): void;

/**
 * Get stack trace information
 * @param offset - Number of stack frames to skip (optional)
 * @returns Stack trace string
 */
function stack(offset?: number): string;

// Disable autostart for manual control
QUnit.config.autostart = false;

// Load additional resources
loadTestData().then(() => {
  // Start tests after resources are ready
  QUnit.start();
});

interface TestContext {
  /** Test timeout value */
  timeout?: number;
  /** Custom test properties */
  [key: string]: any;
}

interface ModuleContext {
  /** Module name */
  name: string;
  /** Parent module (for nested modules) */
  parent?: ModuleContext;
  /** Custom module properties */
  [key: string]: any;
}