mirror of https://gitee.com/openkylin/nodejs.git
134 lines
4.4 KiB
JavaScript
134 lines
4.4 KiB
JavaScript
// Flags: --expose-internals
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'use strict';
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const common = require('../common');
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const {
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hijackStdout,
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restoreStdout,
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} = require('../common/hijackstdio');
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const assert = require('assert');
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const errors = require('internal/errors');
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// Turn off ANSI color formatting for this test file.
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const { inspect } = require('util');
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inspect.defaultOptions.colors = false;
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errors.E('TEST_ERROR_1', 'Error for testing purposes: %s',
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Error, TypeError, RangeError);
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errors.E('TEST_ERROR_2', (a, b) => `${a} ${b}`, Error);
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{
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const err = new errors.codes.TEST_ERROR_1('test');
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assert(err instanceof Error);
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assert.strictEqual(err.name, 'Error');
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assert.strictEqual(err.message, 'Error for testing purposes: test');
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assert.strictEqual(err.code, 'TEST_ERROR_1');
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}
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{
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const err = new errors.codes.TEST_ERROR_1.TypeError('test');
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assert(err instanceof TypeError);
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assert.strictEqual(err.name, 'TypeError');
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assert.strictEqual(err.message, 'Error for testing purposes: test');
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assert.strictEqual(err.code, 'TEST_ERROR_1');
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}
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{
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const err = new errors.codes.TEST_ERROR_1.RangeError('test');
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assert(err instanceof RangeError);
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assert.strictEqual(err.name, 'RangeError');
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assert.strictEqual(err.message, 'Error for testing purposes: test');
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assert.strictEqual(err.code, 'TEST_ERROR_1');
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}
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{
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const err = new errors.codes.TEST_ERROR_2('abc', 'xyz');
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assert(err instanceof Error);
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assert.strictEqual(err.name, 'Error');
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assert.strictEqual(err.message, 'abc xyz');
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assert.strictEqual(err.code, 'TEST_ERROR_2');
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}
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{
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common.expectsInternalAssertion(
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() => new errors.codes.TEST_ERROR_1(),
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'Code: TEST_ERROR_1; The provided arguments ' +
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'length (0) does not match the required ones (1).'
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);
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}
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// Tests for common.expectsError
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assert.throws(() => {
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throw new errors.codes.TEST_ERROR_1.TypeError('a');
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}, { code: 'TEST_ERROR_1' });
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assert.throws(() => {
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throw new errors.codes.TEST_ERROR_1.TypeError('a');
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}, { code: 'TEST_ERROR_1',
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name: 'TypeError',
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message: /^Error for testing/ });
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assert.throws(() => {
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throw new errors.codes.TEST_ERROR_1.TypeError('a');
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}, { code: 'TEST_ERROR_1', name: 'TypeError' });
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assert.throws(() => {
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throw new errors.codes.TEST_ERROR_1.TypeError('a');
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}, {
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code: 'TEST_ERROR_1',
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name: 'TypeError',
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message: 'Error for testing purposes: a'
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});
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// Test that `code` property is mutable and that changing it does not change the
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// name.
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{
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const myError = new errors.codes.TEST_ERROR_1('foo');
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assert.strictEqual(myError.code, 'TEST_ERROR_1');
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assert.strictEqual(myError.hasOwnProperty('code'), true);
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assert.strictEqual(myError.hasOwnProperty('name'), false);
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assert.deepStrictEqual(Object.keys(myError), ['code']);
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const initialName = myError.name;
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myError.code = 'FHQWHGADS';
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assert.strictEqual(myError.code, 'FHQWHGADS');
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assert.strictEqual(myError.name, initialName);
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assert.deepStrictEqual(Object.keys(myError), ['code']);
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assert.ok(!myError.name.includes('TEST_ERROR_1'));
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assert.ok(!myError.name.includes('FHQWHGADS'));
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}
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// Test that `name` is mutable and that changing it alters `toString()` but not
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// `console.log()` results, which is the behavior of `Error` objects in the
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// browser. Note that `name` becomes enumerable after being assigned.
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{
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const myError = new errors.codes.TEST_ERROR_1('foo');
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assert.deepStrictEqual(Object.keys(myError), ['code']);
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const initialToString = myError.toString();
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myError.name = 'Fhqwhgads';
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assert.deepStrictEqual(Object.keys(myError), ['code', 'name']);
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assert.notStrictEqual(myError.toString(), initialToString);
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}
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// Test that `message` is mutable and that changing it alters `toString()` but
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// not `console.log()` results, which is the behavior of `Error` objects in the
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// browser. Note that `message` remains non-enumerable after being assigned.
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{
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let initialConsoleLog = '';
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hijackStdout((data) => { initialConsoleLog += data; });
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const myError = new errors.codes.TEST_ERROR_1('foo');
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assert.deepStrictEqual(Object.keys(myError), ['code']);
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const initialToString = myError.toString();
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console.log(myError);
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assert.notStrictEqual(initialConsoleLog, '');
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restoreStdout();
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let subsequentConsoleLog = '';
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hijackStdout((data) => { subsequentConsoleLog += data; });
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myError.message = 'Fhqwhgads';
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assert.deepStrictEqual(Object.keys(myError), ['code']);
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assert.notStrictEqual(myError.toString(), initialToString);
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console.log(myError);
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assert.strictEqual(subsequentConsoleLog, initialConsoleLog);
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restoreStdout();
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}
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