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85 lines
2.1 KiB
85 lines
2.1 KiB
'use strict';
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const common = require('../common');
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const assert = require('assert');
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const { Writable, Readable } = require('stream');
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class NullWriteable extends Writable {
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_write(chunk, encoding, callback) {
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return callback();
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}
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}
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class QuickEndReadable extends Readable {
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_read() {
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this.push(null);
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}
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}
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class NeverEndReadable extends Readable {
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_read() {}
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}
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{
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const dest = new NullWriteable();
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const src = new QuickEndReadable();
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dest.on('pipe', common.mustCall());
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dest.on('unpipe', common.mustCall());
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src.pipe(dest);
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setImmediate(() => {
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assert.strictEqual(src._readableState.pipesCount, 0);
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});
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}
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{
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const dest = new NullWriteable();
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const src = new NeverEndReadable();
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dest.on('pipe', common.mustCall());
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dest.on('unpipe', common.mustNotCall('unpipe should not have been emitted'));
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src.pipe(dest);
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setImmediate(() => {
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assert.strictEqual(src._readableState.pipesCount, 1);
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});
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}
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{
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const dest = new NullWriteable();
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const src = new NeverEndReadable();
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dest.on('pipe', common.mustCall());
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dest.on('unpipe', common.mustCall());
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src.pipe(dest);
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src.unpipe(dest);
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setImmediate(() => {
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assert.strictEqual(src._readableState.pipesCount, 0);
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});
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}
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{
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const dest = new NullWriteable();
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const src = new QuickEndReadable();
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dest.on('pipe', common.mustCall());
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dest.on('unpipe', common.mustCall());
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src.pipe(dest, { end: false });
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setImmediate(() => {
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assert.strictEqual(src._readableState.pipesCount, 0);
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});
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}
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{
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const dest = new NullWriteable();
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const src = new NeverEndReadable();
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dest.on('pipe', common.mustCall());
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dest.on('unpipe', common.mustNotCall('unpipe should not have been emitted'));
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src.pipe(dest, { end: false });
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setImmediate(() => {
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assert.strictEqual(src._readableState.pipesCount, 1);
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});
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}
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{
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const dest = new NullWriteable();
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const src = new NeverEndReadable();
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dest.on('pipe', common.mustCall());
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dest.on('unpipe', common.mustCall());
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src.pipe(dest, { end: false });
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src.unpipe(dest);
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setImmediate(() => {
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assert.strictEqual(src._readableState.pipesCount, 0);
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});
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}
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