/* eslint-env qunit */
import { createTimeRanges, createTimeRange } from '../../../src/js/utils/time-ranges.js';

QUnit.module('time-ranges');

QUnit.test('should export the deprecated createTimeRange function', function(assert) {
  assert.equal(createTimeRange,
              createTimeRanges,
              'createTimeRange is an alias to createTimeRanges');
});

QUnit.test('should create a fake single timerange', function(assert) {
  const tr = createTimeRanges(0, 10);

  assert.equal(tr.length, 1, 'length should be 1');
  assert.equal(tr.start(0),
              0,
              'works if start is called with valid index');
  assert.equal(tr.end(0),
              10,
              'works if end is called with with valid index');
  assert.throws(()=>tr.start(1),
                /Failed to execute 'start'/,
                'fails if start is called with an invalid index');
  assert.throws(()=>tr.end(1),
                /Failed to execute 'end'/,
                'fails if end is called with with an invalid index');
});

QUnit.test('should create a fake multiple timerange', function(assert) {
  const tr = createTimeRanges([
    [0, 10],
    [11, 20]
  ]);

  assert.equal(tr.length, 2, 'length should equal 2');
  assert.equal(tr.start(1), 11, 'works if start is called with valid index');
  assert.equal(tr.end(1), 20, 'works if end is called with with valid index');
  assert.throws(()=>tr.start(-1),
                /Failed to execute 'start'/,
                'fails if start is called with an invalid index');
  assert.throws(()=>tr.end(-1),
                /Failed to execute 'end'/,
                'fails if end is called with with an invalid index');
});

QUnit.test('should throw without being given an index', function(assert) {
  const tr = createTimeRanges([
    [0, 10],
    [11, 20]
  ]);

  assert.throws(
    () => tr.start(),
    /Failed to execute 'start'/,
    'start throws if no index is given'
  );

  assert.throws(
    () => tr.end(),
    /Failed to execute 'end'/,
    'end throws if no index is given'
  );
});