test: stream readable resumeScheduled state
PR-URL: https://github.com/nodejs/node/pull/10299 Ref: https://github.com/nodejs/node/issues/8683 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
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test/parallel/test-stream-readable-resumeScheduled.js
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65
test/parallel/test-stream-readable-resumeScheduled.js
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'use strict';
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const common = require('../common');
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// Testing Readable Stream resumeScheduled state
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const assert = require('assert');
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const { Readable, Writable } = require('stream');
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{
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// pipe() test case
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const r = new Readable({ read() {} });
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const w = new Writable();
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// resumeScheduled should start = `false`.
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assert.strictEqual(r._readableState.resumeScheduled, false);
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// calling pipe() should change the state value = true.
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r.pipe(w);
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assert.strictEqual(r._readableState.resumeScheduled, true);
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process.nextTick(common.mustCall(() => {
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assert.strictEqual(r._readableState.resumeScheduled, false);
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}));
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}
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{
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// 'data' listener test case
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const r = new Readable({ read() {} });
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// resumeScheduled should start = `false`.
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assert.strictEqual(r._readableState.resumeScheduled, false);
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r.push(Buffer.from([1, 2, 3]));
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// adding 'data' listener should change the state value
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r.on('data', common.mustCall(() => {
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assert.strictEqual(r._readableState.resumeScheduled, false);
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}));
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assert.strictEqual(r._readableState.resumeScheduled, true);
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process.nextTick(common.mustCall(() => {
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assert.strictEqual(r._readableState.resumeScheduled, false);
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}));
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}
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{
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// resume() test case
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const r = new Readable({ read() {} });
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// resumeScheduled should start = `false`.
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assert.strictEqual(r._readableState.resumeScheduled, false);
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// Calling resume() should change the state value.
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r.resume();
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assert.strictEqual(r._readableState.resumeScheduled, true);
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r.on('resume', common.mustCall(() => {
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// The state value should be `false` again
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assert.strictEqual(r._readableState.resumeScheduled, false);
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}));
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process.nextTick(common.mustCall(() => {
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assert.strictEqual(r._readableState.resumeScheduled, false);
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}));
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}
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