OkHttp HPACK tests
==================

These tests use the [hpack-test-case][1] project to validate OkHttp's HPACK
implementation.  The HPACK test cases are in a separate git submodule, so to
initialize them, you must run:

    git submodule init
    git submodule update

TODO
----

 * Add maven goal to avoid manual call to git submodule init.
 * Make hpack-test-case update itself from git, and run new tests.

      .isEqualTo(bytes)
    assertThat(CertificateAdapters.extension.fromDer(bytes))
      .isEqualTo(extension)
  }

  /** Tags larger than 30 are a special case. */
  @Test fun `large tag`() {
    val bytes = "df83fb6800".decodeHex()

    val adapter = Adapters.NULL.withTag(tagClass = DerHeader.TAG_CLASS_PRIVATE, tag = 65_000L)
    assertThat(adapter.toDer(null)).isEqualTo(bytes)

 *  Fix: Don't crash decompressing web sockets messages. We had a bug where we assumed deflated
    bytes in would always yield deflated bytes out and this isn't always the case!

 *  Fix: Reliably update and invalidate the disk cache on windows. As originally designed our
    internal `DiskLruCache` assumes an inode-like file system, where it's fine to delete files that

    fileSystem.read(file) {
      return readStory(this)
    }
  }

  /** Iterate through the hpack-test-case resources, only picking stories for the current draft.  */
  fun storiesForCurrentDraft(): Array<String> {
    val resource =
      HpackJsonUtil::class.java.getResource("/hpack-test-case")
        ?: return arrayOf()

    val testCaseDirectory = File(resource.toURI()).toOkioPath()

    assertThat(base.resolve("")).isEqualTo(parse("http://host/a/b"))
    assertThat(base.resolve("\\path")).isEqualTo(parse("http://host/path"))
  }

  @Test
  fun resolveUnsupportedScheme() {
    val base = parse("http://a/")
    assertThat(base.resolve("ftp://b")).isNull()
    assertThat(base.resolve("ht+tp://b")).isNull()
    assertThat(base.resolve("ht-tp://b")).isNull()
    assertThat(base.resolve("ht.tp://b")).isNull()

   0042; 0062; Case map
   0043; 0063; Case map
   0044; 0064; Case map
   0045; 0065; Case map
   0046; 0066; Case map
   0047; 0067; Case map
   0048; 0068; Case map
   0049; 0069; Case map
   004A; 006A; Case map
   004B; 006B; Case map
   004C; 006C; Case map
   004D; 006D; Case map
   004E; 006E; Case map
   004F; 006F; Case map
   0050; 0070; Case map
   0051; 0071; Case map
   0052; 0072; Case map

 * Representation of one story, a set of request headers to encode or decode. This class is used
 * reflectively with Moshi to parse stories from files.
 */
data class Story(
  val description: String? = null,
  val cases: List<Case>,
  val fileName: String? = null,
) {
  // Used as the test name.
  override fun toString() = fileName ?: "?"

  companion object {
    @JvmField

      pattern += "."
    }
    // Hostname and pattern are now absolute domain names.

    pattern = pattern.asciiToLowercase()
    // Hostname and pattern are now in lower case -- domain names are case-insensitive.

    if ("*" !in pattern) {
      // Not a wildcard pattern -- hostname and pattern must match exactly.
      return hostname == pattern
    }

    // Wildcard pattern

  /** Returns the value at `index`. */
  fun value(index: Int): String = commonValue(index)

  /** Returns an immutable case-insensitive set of header names. */
  fun names(): Set<String> {
    val result = TreeSet(String.CASE_INSENSITIVE_ORDER)
    for (i in 0 until size) {
      result.add(name(i))
    }
    return Collections.unmodifiableSet(result)
  }

      """
      |    180C; ; Map to nothing
      |    0041; 0061; Case map
      |    0390; 03B9 0308 0301; Case map
      |
      """.trimMargin(),
    )

    val mappings = buffer.readCodePointMappings()
    assertEquals(
      mapOf(
        // Map to nothing.
        0x180c to "",
        // Case map.
        'A'.code to "a",
        // Case map.
        'ΐ'.code to "\u03B9\u0308\u0301",
      ),