assertThat(url.queryParameterNames).isEqualTo(setOf("a+=& b"))
    assertThat(url.queryParameterValues("a+=& b")).isEqualTo(listOf("c+=& d"))
    assertThat(url.querySize).isEqualTo(1)
    // Ambiguous! (Though working as designed.)
    assertThat(url.query).isEqualTo("a+=& b=c+=& d")
    assertThat(url.encodedQuery).isEqualTo("a%2B%3D%26%20b=c%2B%3D%26%20d")
  }

  @Test
  fun composeQueryWithEncodedComponents() {

    We don't expect this to be a problem in practice!

 *  **OkHttp has an experimental new API for tracking metrics.** The new
    `EventListener` API is designed to help developers monitor HTTP requests'
    size and duration. This feature is an unstable preview: the API is subject
    to change, and the implementation is incomplete. This is a big new API we
    are eager for feedback.