}
    assertSplitterIterableIsLazy(Splitter.onPattern(","));
  }

  /**
   * This test really pushes the boundaries of what we support. In general the splitter's behaviour
   * is not well defined if the char sequence it's splitting is mutated during iteration.
   */
  private void assertSplitterIterableIsLazy(Splitter splitter) {
    StringBuilder builder = new StringBuilder();

// - a string representing the tracing implementation: "mlir" or "graphdef".
// - a boolean that when true enables TFRT as the execution engine.
class UnifiedCAPI
    : public ::testing::TestWithParam<std::tuple<const char*, bool>> {
 protected:
  void SetUp() override {
    TF_StatusPtr status(TF_NewStatus());
    TF_SetTracingImplementation(std::get<0>(GetParam()), status.get());
    absl::Status s = StatusFromTF_Status(status.get());

        <setting id="org.eclipse.jdt.core.formatter.insert_new_line_before_finally_in_try_statement" value="do not insert"/>
        <setting id="org.eclipse.jdt.core.formatter.tabulation.char" value="space"/>
        <setting id="org.eclipse.jdt.core.formatter.wrap_before_string_concatenation" value="true"/>
        <setting id="org.eclipse.jdt.core.formatter.lineSplit" value="140"/>

        }

        if (isHttpUrl && isSmbOrFtpUrl) {
            //  smb/ftp->http
            // encode
            final StringBuilder buf = new StringBuilder(url.length() + 100);
            for (final char c : url.toCharArray()) {
                if (CharUtil.isUrlChar(c)) {
                    buf.append(c);
                } else {
                    try {

      }
      for (int i = 0; i < 26; i++) {
        result['A' + i] = (byte) (10 + i);
        result['a' + i] = (byte) (10 + i);
      }
      asciiDigits = result;
    }

    static int digit(char c) {
      return (c < 128) ? asciiDigits[c] : -1;
    }
  }

  /**
   * Parses the specified string as a signed decimal long value. The ASCII character {@code '-'} (

	{"long\u0250string\u0250with\u0250nonascii\u2C6Fchars", []byte("LONG\u2C6FSTRING\u2C6FWITH\u2C6FNONASCII\u2C6FCHARS")},
	{"\u0250\u0250\u0250\u0250\u0250", []byte("\u2C6F\u2C6F\u2C6F\u2C6F\u2C6F")}, // grows one byte per char
	{"a\u0080\U0010FFFF", []byte("A\u0080\U0010FFFF")},                           // test utf8.RuneSelf and utf8.MaxRune
}

var lowerTests = []StringTest{
	{"", []byte("")},
	{"abc", []byte("abc")},

				"application/x-sas-utility",
				"application/x-sas-putility",
				"application/x-sas-transport",
				"application/x-sas-backup",
				"application/x-sc",
				"application/x-sh",
				"application/x-shar",
				"application/x-shockwave-flash",
				"application/x-silverlight-app",
				"application/x-stuffit",
				"application/x-stuffitx",
				"application/x-sv4cpio",
				"application/x-sv4crc",

        if (value == null) {
            return "";
        }
        final StringBuilder sb = new StringBuilder(value.length() + 16);
        for (int i = 0; i < value.length(); i++) {
            final char c = value.charAt(i);
            if (c == '\0') {
                continue; // Skip NULL characters
            }
            if (c == '\\' || c == '"') {
                sb.append('\\');
            }

      pos: Int,
      limit: Int,
    ): Int {
      if (limit - pos < 2) return -1

      val c0 = input[pos]
      if ((c0 < 'a' || c0 > 'z') && (c0 < 'A' || c0 > 'Z')) return -1 // Not a scheme start char.

      characters@ for (i in pos + 1 until limit) {
        return when (input[i]) {
          // Scheme character. Keep going.
          in 'a'..'z', in 'A'..'Z', in '0'..'9', '+', '-', '.' -> continue@characters

      assertThat(expected.message).isEqualTo("Unexpected char 0x20 at 1 in header name: a b")
    }
  }

  @Test
  fun requestHeaderNameWithTabForbidden() {
    assertFailsWith<IllegalArgumentException> {
      Request.Builder().addHeader("a\tb", "c")
    }.also { expected ->
      assertThat(expected.message).isEqualTo("Unexpected char 0x09 at 1 in header name: a\tb")
    }
  }

  @Test