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wrap_js_stream: adding test for readStop #16356

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wrap_js_stream: adding test for readStop #16356

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wrap_js_stream: adding test for readStop
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@akaila
akaila committed Oct 22, 2017
commit f1480dca04a23c5db9a5a7302accb73931a852a4
42 changes: 42 additions & 0 deletions test/parallel/test-wrap-js-stream-read-stop.js
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// Flags: --expose-internals
'use strict';

require('../common');
const assert = require('assert');
const WrapStream = require('internal/wrap_js_stream');
const Stream = require('stream');

class FakeStream extends Stream {
constructor() {
super();
this._paused = false;
}

pause() {
this._paused = true;
}

resume() {
this._paused = false;
}

isPaused() {
return this._paused;
}
}

const fakeStreamObj = new FakeStream();
const wrappedStream = new WrapStream(fakeStreamObj);

// Resume by wrapped stream upon construction
assert.strictEqual(fakeStreamObj.isPaused(), false);

fakeStreamObj.pause();

assert.strictEqual(fakeStreamObj.isPaused(), true);

fakeStreamObj.resume();

assert.strictEqual(wrappedStream.readStop(), 0);

assert.strictEqual(fakeStreamObj.isPaused(), true);