public void testSmallCharMatcher() {
    CharMatcher len1 = SmallCharMatcher.from(bitSet("#"), "#");
    CharMatcher len2 = SmallCharMatcher.from(bitSet("ab"), "ab");
    CharMatcher len3 = SmallCharMatcher.from(bitSet("abc"), "abc");
    CharMatcher len4 = SmallCharMatcher.from(bitSet("abcd"), "abcd");
    assertTrue(len1.matches('#'));
    assertFalse(len1.matches('!'));
    assertTrue(len2.matches('a'));
    assertTrue(len2.matches('b'));

    }

    @Test
    public void testConfigInterpolation() throws IOException {
        String config = "a=$\\\\\\\\{var}\n" + "ab=${a}b\n" + "abc=${ab}c";
        Map<String, String> expected = Map.of("a", "$\\{var}", "ab", "$\\{var}b", "abc", "$\\{var}bc");

        java.util.Properties props1 = new java.util.Properties();
        props1.load(new StringReader(config));

    // TODO test jdk.tls.client.enableSessionTicketExtension
    // TODO check debugging information

    enableTls()

    server.enqueue(MockResponse(body = "abc"))

    val request = Request(server.url("/"))

    val response = client.newCall(request).execute()

    response.use {
      assertEquals(200, response.code)
      if (PlatformVersion.majorVersion > 11) {

  public void testReadEmptyString() throws IOException {
    assertReadsCorrectly("");
  }

  public void testReadsStringsCorrectly() throws IOException {
    assertReadsCorrectly("abc");
    assertReadsCorrectly("abcde");
    assertReadsCorrectly("abcdefghijkl");
    assertReadsCorrectly(
        ""
            + "abcdefghijklmnopqrstuvwxyz\n"
            + "ABCDEFGHIJKLMNOPQRSTUVWXYZ\r"

    }
  }

  @Test
  fun writeBounds() {
    val operator =
      FileOperator(
        randomAccessFile!!.getChannel(),
      )
    val buffer = Buffer().writeUtf8("abc")
    assertFailsWith<IndexOutOfBoundsException> {
      operator.write(0, buffer, -1L)
    }
    assertFailsWith<IndexOutOfBoundsException> {
      operator.write(0, buffer, 4L)
    }
  }

        "Alphanumeric characters are always 'safe' " + "and should not be explicitly specified";
    IllegalArgumentException expected =
        assertThrows(IllegalArgumentException.class, () -> new PercentEscaper("-+#abc.!", false));
    assertThat(expected).hasMessageThat().isEqualTo(msg);
  }

  public void testBadArguments_plusforspace() {
    // space can be a safe char if plusForSpace is false

  private static final ImmutableSet<String> VALID_NAME =
      ImmutableSet.of(
          "foo.com",
          "f-_-o.cOM",
          "f--1.com",
          "f11-1.com",
          "www",
          "abc.a23",
          "biz.com.ua",
          "x",
          "fOo",
          "f--o",
          "f_a",
          "foo.net.us\uFF61ocm",
          "woo.com.",
          "8server.shop",
          "123.cn",

func TestSignV4TrimAll(t *testing.T) {
	testCases := []struct {
		// Input.
		inputStr string
		// Expected result.
		result string
	}{
		{"本語", "本語"},
		{" abc ", "abc"},
		{" a b ", "a b"},
		{"a b ", "a b"},
		{"a  b", "a b"},
		{"a   b", "a b"},
		{"   a   b  c   ", "a b c"},
		{"a \t b  c   ", "a b c"},
		{"\"a \t b  c   ", "\"a b c"},

	return FromTimestamp(time.Now().UTC()), nil
}

func handleSQLSubstring(r Record, e *SubstringFunc, tableAlias string) (val *Value, err error) {
	// Both forms `SUBSTRING('abc' FROM 2 FOR 1)` and
	// SUBSTRING('abc', 2, 1) are supported.

	// Evaluate the string argument
	v1, err := e.Expr.evalNode(r, tableAlias)
	if err != nil {
		return nil, err
	}
	inferTypeAsString(v1)
	s, ok := v1.ToString()

	}

	dump, err := cd.GetClusterConfigDump()
	if err != nil {
		return "", err
	}

	for _, dac := range dump.DynamicActiveClusters {
		clusterTyped := &cluster.Cluster{}
		// Support v2 or v3 in config dump. See ads.go:RequestedTypes for more info.
		dac.Cluster.TypeUrl = v3.ClusterType
		err = dac.Cluster.UnmarshalTo(clusterTyped)
		if err != nil {
			return "", err
		}
		if filter.Verify(clusterTyped) {