67 lines
3.1 KiB
JavaScript
67 lines
3.1 KiB
JavaScript
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/**
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* Copyright 2017 Google Inc. All rights reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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const transformAsyncFunctions = require('../TransformAsyncFunctions');
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describe('TransformAsyncFunctions', function() {
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it('should convert a function expression', function(done) {
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const input = `(async function(){ return 123 })()`;
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const output = eval(transformAsyncFunctions(input));
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expect(output instanceof Promise).toBe(true);
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output.then(result => expect(result).toBe(123)).then(done);
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});
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it('should convert an arrow function', function(done) {
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const input = `(async () => 123)()`;
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const output = eval(transformAsyncFunctions(input));
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expect(output instanceof Promise).toBe(true);
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output.then(result => expect(result).toBe(123)).then(done);
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});
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it('should convert an arrow function with curly braces', function(done) {
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const input = `(async () => { return 123 })()`;
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const output = eval(transformAsyncFunctions(input));
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expect(output instanceof Promise).toBe(true);
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output.then(result => expect(result).toBe(123)).then(done);
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});
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it('should convert a function declaration', function(done) {
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const input = `async function f(){ return 123; } f();`;
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const output = eval(transformAsyncFunctions(input));
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expect(output instanceof Promise).toBe(true);
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output.then(result => expect(result).toBe(123)).then(done);
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});
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it('should convert await', function(done) {
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const input = `async function f(){ return 23 + await Promise.resolve(100); } f();`;
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const output = eval(transformAsyncFunctions(input));
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expect(output instanceof Promise).toBe(true);
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output.then(result => expect(result).toBe(123)).then(done);
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});
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it('should convert method', function(done) {
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const input = `class X{async f() { return 123 }} (new X()).f();`;
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const output = eval(transformAsyncFunctions(input));
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expect(output instanceof Promise).toBe(true);
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output.then(result => expect(result).toBe(123)).then(done);
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});
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it('should pass arguments', function(done) {
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const input = `(async function(a, b){ return await a + await b })(Promise.resolve(100), 23)`;
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const output = eval(transformAsyncFunctions(input));
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expect(output instanceof Promise).toBe(true);
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output.then(result => expect(result).toBe(123)).then(done);
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});
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it('should still work across eval', function(done) {
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const input = `var str = (async function(){ return 123; }).toString(); eval('(' + str + ')')();`;
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const output = eval(transformAsyncFunctions(input));
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expect(output instanceof Promise).toBe(true);
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output.then(result => expect(result).toBe(123)).then(done);
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});
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});
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