Function testTransform

test/parallel/test-stream-transform-split-highwatermark.js:9–13

(expectedReadableHwm, expectedWritableHwm, options)

const DEFAULT = getDefaultHighWaterMark();

function testTransform(expectedReadableHwm, expectedWritableHwm, options) {
  const t = new Transform(options);
  assert.strictEqual(t._readableState.highWaterMark, expectedReadableHwm);
  assert.strictEqual(t._writableState.highWaterMark, expectedWritableHwm);
}

// Test overriding defaultHwm
testTransform(666, DEFAULT, { readableHighWaterMark: 666 });