참고소스 수정본

참고/playwright-main/tests/page/page-evaluate-handle.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 { test as it, expect } from './pageTest';
+
+it('should work', async ({ page }) => {
+  const windowHandle = await page.evaluateHandle(() => window);
+  expect(windowHandle).toBeTruthy();
+});
+
+it('should accept object handle as an argument', async ({ page }) => {
+  const navigatorHandle = await page.evaluateHandle(() => navigator);
+  const text = await page.evaluate(e => e.userAgent, navigatorHandle);
+  expect(text).toContain('Mozilla');
+});
+
+it('should accept object handle to primitive types', async ({ page }) => {
+  const aHandle = await page.evaluateHandle(() => 5);
+  const isFive = await page.evaluate(e => Object.is(e, 5), aHandle);
+  expect(isFive).toBeTruthy();
+});
+
+it('should accept nested handle', async ({ page }) => {
+  const foo = await page.evaluateHandle(() => ({ x: 1, y: 'foo' }));
+  const result = await page.evaluate(({ foo }) => {
+    return foo;
+  }, { foo });
+  expect(result).toEqual({ x: 1, y: 'foo' });
+});
+
+it('should accept nested window handle', async ({ page }) => {
+  const foo = await page.evaluateHandle(() => window);
+  const result = await page.evaluate(({ foo }) => {
+    return foo === window;
+  }, { foo });
+  expect(result).toBe(true);
+});
+
+it('should accept multiple nested handles', async ({ page }) => {
+  const foo = await page.evaluateHandle(() => ({ x: 1, y: 'foo' }));
+  const bar = await page.evaluateHandle(() => 5);
+  const baz = await page.evaluateHandle(() => (['baz']));
+  const result = await page.evaluate(x => {
+    return JSON.stringify(x);
+  }, { a1: { foo }, a2: { bar, arr: [{ baz }] } });
+  expect(JSON.parse(result)).toEqual({
+    a1: { foo: { x: 1, y: 'foo' } },
+    a2: { bar: 5, arr: [{ baz: ['baz'] }] }
+  });
+});
+
+it('should accept same handle multiple times', async ({ page }) => {
+  const foo = await page.evaluateHandle(() => 1);
+  expect(await page.evaluate(x => x, { foo, bar: [foo], baz: { foo } })).toEqual({ foo: 1, bar: [1], baz: { foo: 1 } });
+});
+
+it('should accept same nested object multiple times', async ({ page }) => {
+  const foo = { x: 1 };
+  expect(await page.evaluate(x => x, { foo, bar: [foo], baz: { foo } })).toEqual({ foo: { x: 1 }, bar: [{ x: 1 }], baz: { foo: { x: 1 } } });
+});
+
+it('should accept object handle to unserializable value', async ({ page }) => {
+  const aHandle = await page.evaluateHandle(() => Infinity);
+  expect(await page.evaluate(e => Object.is(e, Infinity), aHandle)).toBe(true);
+});
+
+it('should pass configurable args', async ({ page }) => {
+  const result = await page.evaluate(arg => {
+    if (arg.foo !== 42)
+      throw new Error('Not a 42');
+    arg.foo = 17;
+    if (arg.foo !== 17)
+      throw new Error('Not 17');
+    delete arg.foo;
+    if (arg.foo === 17)
+      throw new Error('Still 17');
+    return arg;
+  }, { foo: 42 });
+  expect(result).toEqual({});
+});
+
+it('should work with primitives', async ({ page }) => {
+  const aHandle = await page.evaluateHandle(() => {
+    window['FOO'] = 123;
+    return window;
+  });
+  expect(await page.evaluate(e => e['FOO'], aHandle)).toBe(123);
+});