Function testDropNewestCountsBytes

test/parallel/test-stream-iter-writable-interop.js:241–256

()

// =============================================================================

async function testDropNewestCountsBytes() {
  const writable = new Writable({
    highWaterMark: 5,
    write(chunk, enc, cb) {
      // Never call cb
    },
  });

  const writer = fromWritable(writable, { backpressure: 'drop-newest' });

  await writer.write('12345');  // 5 bytes, accepted
  await writer.write('67890');  // 5 bytes, dropped

  // desiredSize should be 0 (buffer is full)
  assert.strictEqual(writer.desiredSize, 0);
}

// =============================================================================
// drop-oldest: throws on construction