assertThat(url.queryParameter("a")).isEqualTo("!$(),/:;?@[]\\^`{|}~")
  }

  /**
   * When callers parse a URL with query components that aren't encoded, we shouldn't convert them
   * into a canonical form because doing so could be semantically different.
   */
  @Test
  fun queryCharactersNotReencodedWhenParsed() {
    val url = parse("http://host/?a=!$(),/:;?@[]\\^`{|}~")

    could use new flow control capacity before acknowledging it, causing strict HTTP/2 servers to
    fail the call.

 *  Fix: Recover gracefully when a coalesced connection immediately goes unhealthy.

## Version 3.14.2

_2019-05-19_

 *  Fix: Lock in a route when recovering from an HTTP/2 connection error. We had a bug where two
    calls that failed at the same time could cause OkHttp to crash with a `NoSuchElementException`

 * characters that need to be encoded is different for each component. For example, the path
 * component must escape all of its `?` characters, otherwise it could be interpreted as the
 * start of the URL's query. But within the query and fragment components, the `?` character
 * doesn't delimit anything and doesn't need to be escaped.
 *
 * ```java

    filesystem.deleteRecursively(cacheDir)
    assertThat(cache["a"]).isNull()
  }

  /**
   * We had a long-lived bug where [DiskLruCache.trimToSize] could infinite loop if entries
   * being edited required deletion for the operation to complete.
   */
  @ParameterizedTest
  @ArgumentsSource(FileSystemParamProvider::class)

    assertThat(synStream.streamId).isEqualTo(3)
    assertThat(synStream.associatedStreamId).isEqualTo(-1)
    assertThat(synStream.headerBlock).isEqualTo(headerEntries("a", "artichaut"))
  }

  /** A server RST_STREAM shouldn't prevent the client from consuming the response body.  */
  @Test fun serverResponseBodyRstStream() {
    // Write the mocking script.
    peer.sendFrame().settings(Settings())
    peer.acceptFrame() // ACK