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test: stream readable resumeScheduled state
PR-URL: #10299 Ref: #8683 Reviewed-By: Anna Henningsen <[email protected]> Reviewed-By: Matteo Collina <[email protected]> Reviewed-By: Colin Ihrig <[email protected]>
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'use strict'; | ||
const common = require('../common'); | ||
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// Testing Readable Stream resumeScheduled state | ||
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const assert = require('assert'); | ||
const { Readable, Writable } = require('stream'); | ||
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{ | ||
// pipe() test case | ||
const r = new Readable({ read() {} }); | ||
const w = new Writable(); | ||
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// resumeScheduled should start = `false`. | ||
assert.strictEqual(r._readableState.resumeScheduled, false); | ||
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// calling pipe() should change the state value = true. | ||
r.pipe(w); | ||
assert.strictEqual(r._readableState.resumeScheduled, true); | ||
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process.nextTick(common.mustCall(() => { | ||
assert.strictEqual(r._readableState.resumeScheduled, false); | ||
})); | ||
} | ||
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{ | ||
// 'data' listener test case | ||
const r = new Readable({ read() {} }); | ||
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// resumeScheduled should start = `false`. | ||
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 | ||
r.on('data', common.mustCall(() => { | ||
assert.strictEqual(r._readableState.resumeScheduled, false); | ||
})); | ||
assert.strictEqual(r._readableState.resumeScheduled, true); | ||
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process.nextTick(common.mustCall(() => { | ||
assert.strictEqual(r._readableState.resumeScheduled, false); | ||
})); | ||
} | ||
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{ | ||
// resume() test case | ||
const r = new Readable({ read() {} }); | ||
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// resumeScheduled should start = `false`. | ||
assert.strictEqual(r._readableState.resumeScheduled, false); | ||
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// Calling resume() should change the state value. | ||
r.resume(); | ||
assert.strictEqual(r._readableState.resumeScheduled, true); | ||
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r.on('resume', common.mustCall(() => { | ||
// The state value should be `false` again | ||
assert.strictEqual(r._readableState.resumeScheduled, false); | ||
})); | ||
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process.nextTick(common.mustCall(() => { | ||
assert.strictEqual(r._readableState.resumeScheduled, false); | ||
})); | ||
} |