mirror of https://github.com/lukechilds/node.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
79 lines
2.3 KiB
79 lines
2.3 KiB
8 years ago
|
'use strict';
|
||
|
|
const common = require('../common');
|
||
|
|
|
||
|
|
// Regression test for https://github.com/nodejs/node/issues/12718.
|
||
|
|
// Tests that piping a source stream twice to the same destination stream
|
||
|
|
// works, and that a subsequent unpipe() call only removes the pipe *once*.
|
||
|
|
const assert = require('assert');
|
||
|
|
const { PassThrough, Writable } = require('stream');
|
||
|
|
|
||
|
|
{
|
||
|
|
const passThrough = new PassThrough();
|
||
|
|
const dest = new Writable({
|
||
|
|
write: common.mustCall((chunk, encoding, cb) => {
|
||
|
|
assert.strictEqual(`${chunk}`, 'foobar');
|
||
|
|
cb();
|
||
|
|
})
|
||
|
|
});
|
||
|
|
|
||
|
|
passThrough.pipe(dest);
|
||
|
|
passThrough.pipe(dest);
|
||
|
|
|
||
|
|
assert.strictEqual(passThrough._events.data.length, 2);
|
||
|
|
assert.strictEqual(passThrough._readableState.pipesCount, 2);
|
||
|
|
assert.strictEqual(passThrough._readableState.pipes[0], dest);
|
||
|
|
assert.strictEqual(passThrough._readableState.pipes[1], dest);
|
||
|
|
|
||
|
|
passThrough.unpipe(dest);
|
||
|
|
|
||
|
|
assert.strictEqual(passThrough._events.data.length, 1);
|
||
|
|
assert.strictEqual(passThrough._readableState.pipesCount, 1);
|
||
|
|
assert.strictEqual(passThrough._readableState.pipes, dest);
|
||
|
|
|
||
|
|
passThrough.write('foobar');
|
||
|
|
passThrough.pipe(dest);
|
||
|
|
}
|
||
|
|
|
||
|
|
{
|
||
|
|
const passThrough = new PassThrough();
|
||
|
|
const dest = new Writable({
|
||
|
|
write: common.mustCall((chunk, encoding, cb) => {
|
||
|
|
assert.strictEqual(`${chunk}`, 'foobar');
|
||
|
|
cb();
|
||
|
|
}, 2)
|
||
|
|
});
|
||
|
|
|
||
|
|
passThrough.pipe(dest);
|
||
|
|
passThrough.pipe(dest);
|
||
|
|
|
||
|
|
assert.strictEqual(passThrough._events.data.length, 2);
|
||
|
|
assert.strictEqual(passThrough._readableState.pipesCount, 2);
|
||
|
|
assert.strictEqual(passThrough._readableState.pipes[0], dest);
|
||
|
|
assert.strictEqual(passThrough._readableState.pipes[1], dest);
|
||
|
|
|
||
|
|
passThrough.write('foobar');
|
||
|
|
}
|
||
|
|
|
||
|
|
{
|
||
|
|
const passThrough = new PassThrough();
|
||
|
|
const dest = new Writable({
|
||
|
|
write: common.mustNotCall()
|
||
|
|
});
|
||
|
|
|
||
|
|
passThrough.pipe(dest);
|
||
|
|
passThrough.pipe(dest);
|
||
|
|
|
||
|
|
assert.strictEqual(passThrough._events.data.length, 2);
|
||
|
|
assert.strictEqual(passThrough._readableState.pipesCount, 2);
|
||
|
|
assert.strictEqual(passThrough._readableState.pipes[0], dest);
|
||
|
|
assert.strictEqual(passThrough._readableState.pipes[1], dest);
|
||
|
|
|
||
|
|
passThrough.unpipe(dest);
|
||
|
|
passThrough.unpipe(dest);
|
||
|
|
|
||
|
|
assert.strictEqual(passThrough._events.data, undefined);
|
||
|
|
assert.strictEqual(passThrough._readableState.pipesCount, 0);
|
||
|
|
|
||
|
|
passThrough.write('foobar');
|
||
|
|
}
|