playwright/test/jshandle-properties.spec.ts

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/**
* Copyright 2018 Google Inc. All rights reserved.
* Modifications copyright (c) Microsoft Corporation.
*
* 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.
*/
import './playwright.fixtures';
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it('should work', async ({page}) => {
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const aHandle = await page.evaluateHandle(() => ({
one: 1,
two: 2,
three: 3
}));
const twoHandle = await aHandle.getProperty('two');
expect(await twoHandle.jsonValue()).toEqual(2);
});
it('should work with undefined, null, and empty', async ({page}) => {
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const aHandle = await page.evaluateHandle(() => ({
undefined: undefined,
null: null,
}));
const undefinedHandle = await aHandle.getProperty('undefined');
expect(String(await undefinedHandle.jsonValue())).toEqual('undefined');
const nullHandle = await aHandle.getProperty('null');
expect(await nullHandle.jsonValue()).toEqual(null);
const emptyhandle = await aHandle.getProperty('empty');
expect(String(await emptyhandle.jsonValue())).toEqual('undefined');
});
it('should work with unserializable values', async ({page}) => {
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const aHandle = await page.evaluateHandle(() => ({
infinity: Infinity,
nInfinity: -Infinity,
nan: NaN,
nzero: -0
}));
const infinityHandle = await aHandle.getProperty('infinity');
expect(await infinityHandle.jsonValue()).toEqual(Infinity);
const nInfinityHandle = await aHandle.getProperty('nInfinity');
expect(await nInfinityHandle.jsonValue()).toEqual(-Infinity);
const nanHandle = await aHandle.getProperty('nan');
expect(String(await nanHandle.jsonValue())).toEqual('NaN');
const nzeroHandle = await aHandle.getProperty('nzero');
expect(await nzeroHandle.jsonValue()).toEqual(-0);
});
it('getProperties should work', async ({page}) => {
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const aHandle = await page.evaluateHandle(() => ({
foo: 'bar'
}));
const properties = await aHandle.getProperties();
const foo = properties.get('foo');
expect(foo).toBeTruthy();
expect(await foo.jsonValue()).toBe('bar');
});
it('getProperties should return empty map for non-objects', async ({page}) => {
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const aHandle = await page.evaluateHandle(() => 123);
const properties = await aHandle.getProperties();
expect(properties.size).toBe(0);
});
it('getProperties should return even non-own properties', async ({page}) => {
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const aHandle = await page.evaluateHandle(() => {
class A {
a: string;
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constructor() {
this.a = '1';
}
}
class B extends A {
b: string;
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constructor() {
super();
this.b = '2';
}
}
return new B();
});
const properties = await aHandle.getProperties();
expect(await properties.get('a').jsonValue()).toBe('1');
expect(await properties.get('b').jsonValue()).toBe('2');
});