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// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
'use strict';
const common = require('../common');
const assert = require('assert');
const Stream = require('stream');
const requiredConsole = require('console');
const Console = requiredConsole.Console;
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 = common.mustNotCall();
// Make sure that the "Console" function exists.
assert.strictEqual('function', typeof Console);
assert.strictEqual(requiredConsole, global.console);
// Make sure the custom instanceof of Console works
assert.ok(global.console instanceof Console);
assert.ok(!({} instanceof Console));
// Make sure that the Console constructor throws
// when not given a writable stream instance.
common.expectsError(
() => { new Console(); },
{
code: 'ERR_CONSOLE_WRITABLE_STREAM',
type: TypeError,
message: /stdout/
}
);
// Console constructor should throw if stderr exists but is not writable.
common.expectsError(
() => {
out.write = () => {};
err.write = undefined;
new Console(out, err);
},
{
code: 'ERR_CONSOLE_WRITABLE_STREAM',
type: TypeError,
message: /stderr/
}
);
out.write = err.write = (d) => {};
{
const c = new Console(out, err);
assert.ok(c instanceof Console);
out.write = err.write = common.mustCall((d) => {
assert.strictEqual(d, 'test\n');
}, 2);
c.log('test');
c.error('test');
out.write = common.mustCall((d) => {
assert.strictEqual(d, '{ foo: 1 }\n');
});
c.dir({ foo: 1 });
// Ensure that the console functions are bound to the console instance.
let called = 0;
out.write = common.mustCall((d) => {
called++;
assert.strictEqual(d, `${called} ${called - 1} [ 1, 2, 3 ]\n`);
}, 3);
[1, 2, 3].forEach(c.log);
}
// Test calling Console without the `new` keyword.
{
const withoutNew = Console(out, err);
assert.ok(withoutNew instanceof Console);
}
// Test extending Console
{
class MyConsole extends Console {
hello() {}
}
const myConsole = new MyConsole(process.stdout);
assert.strictEqual(typeof myConsole.hello, 'function');
assert.ok(myConsole instanceof Console);
}
// Instance that does not ignore the stream errors.
{
const c2 = new Console(out, err, false);
out.write = () => { throw new Error('out'); };
err.write = () => { throw new Error('err'); };
assert.throws(() => c2.log('foo'), /^Error: out$/);
assert.throws(() => c2.warn('foo'), /^Error: err$/);
assert.throws(() => c2.dir('foo'), /^Error: out$/);
}
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