SmallVectorImpl<int64_t>& s0_shape,
                            SmallVectorImpl<int64_t>& s1_shape) {
  if (!matchPattern(op.getS0(), m_Constant(&s0))) return false;
  if (!matchPattern(op.getS1(), m_Constant(&s1))) return false;

  for (auto s : s0.getValues<APInt>()) s0_shape.push_back(s.getSExtValue());
  for (auto s : s1.getValues<APInt>()) s1_shape.push_back(s.getSExtValue());

  return true;
}

    val response = client.newCall(request).execute()
    assertThat(response.body.string()).isEqualTo("response body")
    val get1 = server.takeRequest()
    assertThat(get1.requestLine).isEqualTo("GET http://android.com/foo HTTP/1.1")
    assertThat(get1.headers["Proxy-Authorization"]).isNull()
    val get2 = server.takeRequest()
    assertThat(get2.requestLine).isEqualTo("GET http://android.com/foo HTTP/1.1")