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nodejs/test/parallel/test-console.js
John Maguire ca3d131bd4 test-console: streamline arrow fn and refine regex
removed unneccessary curly braces and return statement from
inspect arrow function
updated `assert.throws` regex to look for exact match at start
of string

PR-URL: https://github.com/nodejs/node/pull/11039
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Gibson Fahnestock <gibfahn@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
2017-01-30 10:22:28 -08:00

138 lines
4.2 KiB
JavaScript

'use strict';
const common = require('../common');
const assert = require('assert');
assert.ok(process.stdout.writable);
assert.ok(process.stderr.writable);
// Support legacy API
assert.strictEqual('number', typeof process.stdout.fd);
assert.strictEqual('number', typeof process.stderr.fd);
assert.doesNotThrow(function() {
process.once('warning', common.mustCall((warning) => {
assert(/no such label/.test(warning.message));
}));
console.timeEnd('no such label');
});
assert.doesNotThrow(function() {
console.time('label');
console.timeEnd('label');
});
// an Object with a custom .inspect() function
const custom_inspect = { foo: 'bar', inspect: () => 'inspect' };
const stdout_write = global.process.stdout.write;
const stderr_write = global.process.stderr.write;
const strings = [];
const errStrings = [];
global.process.stdout.write = function(string) {
strings.push(string);
};
global.process.stderr.write = function(string) {
errStrings.push(string);
};
// test console.log() goes to stdout
console.log('foo');
console.log('foo', 'bar');
console.log('%s %s', 'foo', 'bar', 'hop');
console.log({slashes: '\\\\'});
console.log(custom_inspect);
// test console.info() goes to stdout
console.info('foo');
console.info('foo', 'bar');
console.info('%s %s', 'foo', 'bar', 'hop');
console.info({slashes: '\\\\'});
console.info(custom_inspect);
// test console.error() goes to stderr
console.error('foo');
console.error('foo', 'bar');
console.error('%s %s', 'foo', 'bar', 'hop');
console.error({slashes: '\\\\'});
console.error(custom_inspect);
// test console.warn() goes to stderr
console.warn('foo');
console.warn('foo', 'bar');
console.warn('%s %s', 'foo', 'bar', 'hop');
console.warn({slashes: '\\\\'});
console.warn(custom_inspect);
// test console.dir()
console.dir(custom_inspect);
console.dir(custom_inspect, { showHidden: false });
console.dir({ foo: { bar: { baz: true } } }, { depth: 0 });
console.dir({ foo: { bar: { baz: true } } }, { depth: 1 });
// test console.trace()
console.trace('This is a %j %d', { formatted: 'trace' }, 10, 'foo');
// test console.time() and console.timeEnd() output
console.time('label');
console.timeEnd('label');
// verify that Object.prototype properties can be used as labels
console.time('__proto__');
console.timeEnd('__proto__');
console.time('constructor');
console.timeEnd('constructor');
console.time('hasOwnProperty');
console.timeEnd('hasOwnProperty');
global.process.stdout.write = stdout_write;
global.process.stderr.write = stderr_write;
// verify that console.timeEnd() doesn't leave dead links
const timesMapSize = console._times.size;
console.time('label1');
console.time('label2');
console.time('label3');
console.timeEnd('label1');
console.timeEnd('label2');
console.timeEnd('label3');
assert.strictEqual(console._times.size, timesMapSize);
const expectedStrings = [
'foo', 'foo bar', 'foo bar hop', "{ slashes: '\\\\\\\\' }", 'inspect'
];
for (const expected of expectedStrings) {
assert.strictEqual(expected + '\n', strings.shift());
assert.strictEqual(expected + '\n', errStrings.shift());
}
for (const expected of expectedStrings) {
assert.strictEqual(expected + '\n', strings.shift());
assert.strictEqual(expected + '\n', errStrings.shift());
}
assert.strictEqual("{ foo: 'bar', inspect: [Function: inspect] }\n",
strings.shift());
assert.strictEqual("{ foo: 'bar', inspect: [Function: inspect] }\n",
strings.shift());
assert.ok(strings.shift().includes('foo: [Object]'));
assert.strictEqual(-1, strings.shift().indexOf('baz'));
assert.ok(/^label: \d+\.\d{3}ms$/.test(strings.shift().trim()));
assert.ok(/^__proto__: \d+\.\d{3}ms$/.test(strings.shift().trim()));
assert.ok(/^constructor: \d+\.\d{3}ms$/.test(strings.shift().trim()));
assert.ok(/^hasOwnProperty: \d+\.\d{3}ms$/.test(strings.shift().trim()));
assert.strictEqual('Trace: This is a {"formatted":"trace"} 10 foo',
errStrings.shift().split('\n').shift());
assert.strictEqual(strings.length, 0);
assert.strictEqual(errStrings.length, 0);
assert.throws(() => {
console.assert(false, 'should throw');
}, /^AssertionError: should throw$/);
assert.doesNotThrow(() => {
console.assert(true, 'this should not throw');
});