/**
* Registers a new test suite.
* @param name The suite name.
* @param fn The suite function, or {@code undefined} to define a pending test suite.
*/
export function describe(name: string, fn: Function): void;

/**
 * Defines a suppressed test suite.
 * @param name The suite name.
 * @param fn The suite function, or {@code undefined} to define a pending test suite.
 */
export function xdescribe(name: string, fn: Function): void;

/**
 * Register a function to call after the current suite finishes.
 * @param fn
 */
export function after(fn: Function): void;

/**
 * Register a function to call after each test in a suite.
 * @param fn
 */
export function afterEach(fn: Function): void;

/**
 * Register a function to call before the current suite starts.
 * @param fn
 */
export function before(fn: Function): void;

/**
 * Register a function to call before each test in a suite.
 * @param fn
 */
export function beforeEach(fn: Function): void;

/**
 * Add a test to the current suite.
 * @param name The test name.
 * @param fn The test function, or {@code undefined} to define a pending test case.
 */
export function it(name: string, fn: Function): void;

/**
 * An alias for {@link #it()} that flags the test as the only one that should
 * be run within the current suite.
 * @param name The test name.
 * @param fn The test function, or {@code undefined} to define a pending test case.
 */
export function iit(name: string, fn: Function): void;

/**
 * Adds a test to the current suite while suppressing it so it is not run.
 * @param name The test name.
 * @param fn The test function, or {@code undefined} to define a pending test case.
 */
export function xit(name: string, fn: Function): void;