mirror of https://gitee.com/openkylin/nodejs.git
22 lines
608 B
JavaScript
22 lines
608 B
JavaScript
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'use strict';
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const common = require('../common');
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const assert = require('assert');
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const { Readable } = require('stream');
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// Verify that .push() and .unshift() can be called from 'data' listeners.
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for (const method of ['push', 'unshift']) {
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const r = new Readable({ read() {} });
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r.once('data', common.mustCall((chunk) => {
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assert.strictEqual(r.readableLength, 0);
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r[method](chunk);
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assert.strictEqual(r.readableLength, chunk.length);
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r.on('data', common.mustCall((chunk) => {
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assert.strictEqual(chunk.toString(), 'Hello, world');
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}));
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}));
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r.push('Hello, world');
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}
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