mirror of https://gitee.com/openkylin/nodejs.git
63 lines
1.1 KiB
JavaScript
63 lines
1.1 KiB
JavaScript
'use strict';
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const common = require('../common');
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const { Readable, PassThrough } = require('stream');
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function test(r) {
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const wrapper = new Readable({
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read: () => {
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let data = r.read();
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if (data) {
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wrapper.push(data);
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return;
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}
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r.once('readable', function() {
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data = r.read();
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if (data) {
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wrapper.push(data);
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}
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// else: the end event should fire
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});
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},
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});
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r.once('end', function() {
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wrapper.push(null);
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});
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wrapper.resume();
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wrapper.once('end', common.mustCall());
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}
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{
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const source = new Readable({
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read: () => {}
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});
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source.push('foo');
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source.push('bar');
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source.push(null);
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const pt = source.pipe(new PassThrough());
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test(pt);
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}
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{
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// This is the underlying cause of the above test case.
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const pushChunks = ['foo', 'bar'];
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const r = new Readable({
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read: () => {
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const chunk = pushChunks.shift();
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if (chunk) {
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// synchronous call
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r.push(chunk);
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} else {
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// asynchronous call
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process.nextTick(() => r.push(null));
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}
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},
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});
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test(r);
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}
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