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'use strict';
require('../common');
const assert = require('assert');
const Stream = require('stream');
const Console = require('console').Console;
var called = false;
const out = new Stream();
const err = new Stream();
// 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/);
// Console constructor should throw if stderr exists but is not writable
assert.throws(function() {
out.write = function() {};
err.write = undefined;
new Console(out, err);
}, /Console expects writable stream instances/);
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);