import * as misc from '../misc';
import {globalBeforeEach} from '../../__jest__/before-each';

describe('hasAuthHeader()', () => {
  beforeEach(globalBeforeEach);
  it('finds valid header', () => {
    const yes = misc.hasAuthHeader([
      {name: 'foo', value: 'bar'},
      {name: 'authorization', value: 'foo'}
    ]);

    expect(yes).toEqual(true);
  });

  it('finds valid header case insensitive', () => {
    const yes = misc.hasAuthHeader([
      {name: 'foo', value: 'bar'},
      {name: 'AuthOrizAtiOn', value: 'foo'}
    ]);

    expect(yes).toEqual(true);
  });
});

describe('generateId()', () => {
  beforeEach(globalBeforeEach);
  it('generates a valid ID', () => {
    const id = misc.generateId('foo');
    expect(id).toMatch(/^foo_[a-z0-9]{32}$/);
  });

  it('generates without prefix', () => {
    const id = misc.generateId();
    expect(id).toMatch(/^[a-z0-9]{32}$/);
  });
});

describe('filterHeaders()', () => {
  beforeEach(globalBeforeEach);
  it('handles bad headers', () => {
    expect(misc.filterHeaders(null, null)).toEqual([]);
    expect(misc.filterHeaders([], null)).toEqual([]);
    expect(misc.filterHeaders(['bad'], null)).toEqual([]);
    expect(misc.filterHeaders(['bad'], 'good')).toEqual([]);
    expect(misc.filterHeaders(null, 'good')).toEqual([]);
    expect(misc.filterHeaders([{name: 'good', value: 'valid'}], null)).toEqual([]);
    expect(misc.filterHeaders([{name: 'good', value: 'valid'}], 'good'))
      .toEqual([{name: 'good', value: 'valid'}]);
  });
});

describe('keyedDebounce()', () => {
  beforeEach(async () => {
    await globalBeforeEach();
    jest.useFakeTimers();
  });

  it('debounces correctly', () => {
    const resultsList = [];
    const fn = misc.keyedDebounce(results => {
      resultsList.push(results);
    }, 100);

    fn('foo', 'bar');
    fn('baz', 'bar');
    fn('foo', 'bar2');
    fn('foo', 'bar3');
    fn('multi', 'foo', 'bar', 'baz');

    expect(setTimeout.mock.calls.length).toBe(5);
    expect(resultsList).toEqual([]);

    jest.runAllTimers();

    expect(resultsList).toEqual([{
      foo: ['bar3'],
      baz: ['bar'],
      multi: ['foo', 'bar', 'baz']
    }]);
  });
});

describe('debounce()', () => {
  beforeEach(async () => {
    await globalBeforeEach();
    jest.useFakeTimers();
  });

  it('debounces correctly', () => {
    const resultList = [];
    const fn = misc.debounce((...args) => {
      resultList.push(args);
    }, 100);

    fn('foo');
    fn('foo');
    fn('multi', 'foo', 'bar', 'baz');
    fn('baz', 'bar');
    fn('foo', 'bar3');

    expect(setTimeout.mock.calls.length).toBe(5);
    expect(resultList).toEqual([]);

    jest.runAllTimers();

    expect(resultList).toEqual([['foo', 'bar3']]);
  });
});