91 строка
2.8 KiB
JavaScript
91 строка
2.8 KiB
JavaScript
/**
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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* @format
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* @flow strict-local
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* @emails oncall+react_native
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*/
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'use strict';
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import stringifySafe, {createStringifySafeWithLimits} from '../stringifySafe';
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describe('stringifySafe', () => {
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it('stringifySafe stringifies undefined values', () => {
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expect(stringifySafe(undefined)).toEqual('undefined');
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});
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it('stringifySafe stringifies null values', () => {
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expect(stringifySafe(null)).toEqual('null');
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});
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it('stringifySafe stringifies string values', () => {
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expect(stringifySafe('abc')).toEqual('"abc"');
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});
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it('stringifySafe stringifies function values', () => {
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expect(stringifySafe(function() {})).toEqual('function () {}');
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});
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it('stringifySafe stringifies non-circular objects', () => {
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expect(stringifySafe({a: 1})).toEqual('{"a":1}');
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});
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it('stringifySafe stringifies circular objects with toString', () => {
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const arg = {};
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arg.arg = arg;
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const result = stringifySafe(arg);
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expect(result).toEqual('[object Object]');
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});
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it('stringifySafe stringifies circular objects without toString', () => {
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const arg = {x: {}, toString: undefined};
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arg.x = arg;
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const result = stringifySafe(arg);
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expect(result).toEqual('["object" failed to stringify]');
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});
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it('stringifySafe stringifies error messages', () => {
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const error = new Error('error');
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const result = stringifySafe(error);
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expect(result).toEqual('Error: error');
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});
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it('stringifySafe truncates long strings', () => {
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const stringify = createStringifySafeWithLimits({maxStringLimit: 3});
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expect(stringify('abcdefghijklmnopqrstuvwxyz')).toEqual(
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'"abc...(truncated)..."',
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);
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expect(stringify({a: 'abcdefghijklmnopqrstuvwxyz'})).toEqual(
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'{"a":"abc...(truncated)..."}',
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);
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});
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it('stringifySafe truncates large arrays', () => {
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const stringify = createStringifySafeWithLimits({maxArrayLimit: 3});
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expect(stringify([1, 2, 3, 4, 5])).toEqual(
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'[1,2,3,"... extra 2 values truncated ..."]',
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);
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expect(stringify({a: [1, 2, 3, 4, 5]})).toEqual(
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'{"a":[1,2,3,"... extra 2 values truncated ..."]}',
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);
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});
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it('stringifySafe truncates large objects', () => {
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const stringify = createStringifySafeWithLimits({maxObjectKeysLimit: 3});
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expect(stringify({a: 1, b: 2, c: 3, d: 4, e: 5})).toEqual(
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'{"a":1,"b":2,"c":3,"...(truncated keys)...":2}',
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);
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});
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it('stringifySafe truncates deep objects', () => {
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const stringify = createStringifySafeWithLimits({maxDepth: 3});
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expect(stringify({a: {a: {a: {x: 0, y: 1, z: 2}}}})).toEqual(
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'{"a":{"a":{"a":"{ ... object with 3 keys ... }"}}}',
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);
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});
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});
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