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nodejs/test/parallel/test-console-instance.js
isaacs 3e1b1dd4a9 Remove excessive copyright/license boilerplate
The copyright and license notice is already in the LICENSE file.  There
is no justifiable reason to also require that it be included in every
file, since the individual files are not individually distributed except
as part of the entire package.
2015-01-12 15:30:28 -08:00

59 lines
1.3 KiB
JavaScript

var common = require('../common');
var assert = require('assert');
var Stream = require('stream');
var Console = require('console').Console;
var called = false;
// ensure the Console instance doesn't write to the
// process' "stdout" or "stderr" streams
process.stdout.write = process.stderr.write = function() {
throw new Error('write() should not be called!');
};
// make sure that the "Console" function exists
assert.equal('function', typeof Console);
// make sure that the Console constructor throws
// when not given a writable stream instance
assert.throws(function () {
new Console();
}, /Console expects a writable stream/);
var out = new Stream();
var err = new Stream();
out.writable = err.writable = true;
out.write = err.write = function(d) {};
var c = new Console(out, err);
out.write = err.write = function(d) {
assert.equal(d, 'test\n');
called = true;
};
assert(!called);
c.log('test');
assert(called);
called = false;
c.error('test');
assert(called);
out.write = function(d) {
assert.equal('{ foo: 1 }\n', d);
called = true;
};
called = false;
c.dir({ foo: 1 });
assert(called);
// ensure that the console functions are bound to the console instance
called = 0;
out.write = function(d) {
called++;
assert.equal(d, called + ' ' + (called - 1) + ' [ 1, 2, 3 ]\n');
};
[1, 2, 3].forEach(c.log);
assert.equal(3, called);