nodejs/test/parallel/test-assert-checktag.js

66 lines
2.1 KiB
JavaScript

'use strict';
require('../common');
const assert = require('assert');
// Disable colored output to prevent color codes from breaking assertion
// message comparisons. This should only be an issue when process.stdout
// is a TTY.
if (process.stdout.isTTY)
process.env.NODE_DISABLE_COLORS = '1';
// Turn off no-restricted-properties because we are testing deepEqual!
/* eslint-disable no-restricted-properties */
// See https://github.com/nodejs/node/issues/10258
{
const date = new Date('2016');
function FakeDate() {}
FakeDate.prototype = Date.prototype;
const fake = new FakeDate();
assert.notDeepEqual(date, fake);
assert.notDeepEqual(fake, date);
// For deepStrictEqual we check the runtime type,
// then reveal the fakeness of the fake date
assert.throws(
() => assert.deepStrictEqual(date, fake),
{
message: 'Expected values to be strictly deep-equal:\n' +
'+ actual - expected\n\n+ 2016-01-01T00:00:00.000Z\n- Date {}'
}
);
assert.throws(
() => assert.deepStrictEqual(fake, date),
{
message: 'Expected values to be strictly deep-equal:\n' +
'+ actual - expected\n\n+ Date {}\n- 2016-01-01T00:00:00.000Z'
}
);
}
{ // At the moment global has its own type tag
const fakeGlobal = {};
Object.setPrototypeOf(fakeGlobal, Object.getPrototypeOf(global));
for (const prop of Object.keys(global)) {
fakeGlobal[prop] = global[prop];
}
assert.notDeepEqual(fakeGlobal, global);
// Message will be truncated anyway, don't validate
assert.throws(() => assert.deepStrictEqual(fakeGlobal, global),
assert.AssertionError);
}
{ // At the moment process has its own type tag
const fakeProcess = {};
Object.setPrototypeOf(fakeProcess, Object.getPrototypeOf(process));
for (const prop of Object.keys(process)) {
fakeProcess[prop] = process[prop];
}
assert.notDeepEqual(fakeProcess, process);
// Message will be truncated anyway, don't validate
assert.throws(() => assert.deepStrictEqual(fakeProcess, process),
assert.AssertionError);
}
/* eslint-enable */