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test.js
79 lines (78 loc) · 3.72 KB
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test.js
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/**
* Copyright 2017 Google Inc. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
const transformAsyncFunctions = require('../TransformAsyncFunctions');
describe('TransformAsyncFunctions', function() {
it('should convert a function expression', function(done) {
const input = `(async function(){ return 123 })()`;
const output = eval(transformAsyncFunctions(input));
expect(output instanceof Promise).toBe(true);
output.then(result => expect(result).toBe(123)).then(done);
});
it('should convert an arrow function', function(done) {
const input = `(async () => 123)()`;
const output = eval(transformAsyncFunctions(input));
expect(output instanceof Promise).toBe(true);
output.then(result => expect(result).toBe(123)).then(done);
});
it('should convert an arrow function with curly braces', function(done) {
const input = `(async () => { return 123 })()`;
const output = eval(transformAsyncFunctions(input));
expect(output instanceof Promise).toBe(true);
output.then(result => expect(result).toBe(123)).then(done);
});
it('should convert a function declaration', function(done) {
const input = `async function f(){ return 123; } f();`;
const output = eval(transformAsyncFunctions(input));
expect(output instanceof Promise).toBe(true);
output.then(result => expect(result).toBe(123)).then(done);
});
it('should convert await', function(done) {
const input = `async function f(){ return 23 + await Promise.resolve(100); } f();`;
const output = eval(transformAsyncFunctions(input));
expect(output instanceof Promise).toBe(true);
output.then(result => expect(result).toBe(123)).then(done);
});
it('should convert method', function(done) {
const input = `class X{async f() { return 123 }} (new X()).f();`;
const output = eval(transformAsyncFunctions(input));
expect(output instanceof Promise).toBe(true);
output.then(result => expect(result).toBe(123)).then(done);
});
it('should pass arguments', function(done) {
const input = `(async function(a, b){ return await a + await b })(Promise.resolve(100), 23)`;
const output = eval(transformAsyncFunctions(input));
expect(output instanceof Promise).toBe(true);
output.then(result => expect(result).toBe(123)).then(done);
});
it('should still work across eval', function(done) {
const input = `var str = (async function(){ return 123; }).toString(); eval('(' + str + ')')();`;
const output = eval(transformAsyncFunctions(input));
expect(output instanceof Promise).toBe(true);
output.then(result => expect(result).toBe(123)).then(done);
});
it('should work with double await', function(done) {
const input = `async function f(){ return 23 + await Promise.resolve(50 + await Promise.resolve(50)); } f();`;
const output = eval(transformAsyncFunctions(input));
expect(output instanceof Promise).toBe(true);
output.then(result => expect(result).toBe(123)).then(done);
});
it('should work paren around arrow function', function(done) {
const input = `(async x => ( 123))()`;
const output = eval(transformAsyncFunctions(input));
expect(output instanceof Promise).toBe(true);
output.then(result => expect(result).toBe(123)).then(done);
});
});