// Copyright (c) Microsoft Corporation. All rights reserved.

// Licensed under the MIT License.

'use strict';

import * as assert from 'assert';

import { createDeferred } from '../../../client/common/utils/async';

suite('Deferred', () => {

test('Resolve', done => {

const valueToSent = new Date().getTime();

const def = createDeferred<number>();

def.promise

.then(value => {

assert.equal(value, valueToSent);

assert.equal(def.resolved, true, 'resolved property value is not `true`');

})

.then(done)

.catch(done);

assert.equal(def.resolved, false, 'Promise is resolved even when it should not be');

assert.equal(def.rejected, false, 'Promise is rejected even when it should not be');

assert.equal(def.completed, false, 'Promise is completed even when it should not be');

def.resolve(valueToSent);

assert.equal(def.resolved, true, 'Promise is not resolved even when it should not be');

assert.equal(def.rejected, false, 'Promise is rejected even when it should not be');

assert.equal(def.completed, true, 'Promise is not completed even when it should not be');

});

test('Reject', done => {

const errorToSend = new Error('Something');

const def = createDeferred<number>();

def.promise

.then(value => {

assert.fail(value, 'Error', 'Was expecting promise to get rejected, however it was resolved', '');

done();

})

.catch(reason => {

assert.equal(reason, errorToSend, 'Error received is not the same');

done();

})

.catch(done);

assert.equal(def.resolved, false, 'Promise is resolved even when it should not be');

assert.equal(def.rejected, false, 'Promise is rejected even when it should not be');

assert.equal(def.completed, false, 'Promise is completed even when it should not be');

def.reject(errorToSend);

assert.equal(def.resolved, false, 'Promise is resolved even when it should not be');

assert.equal(def.rejected, true, 'Promise is not rejected even when it should not be');

assert.equal(def.completed, true, 'Promise is not completed even when it should not be');

});

});