*/
    @Test
    public void testSubstringFromLast() throws Exception {
        assertEquals("ab", StringUtil.substringFromLast("abc", "c"));
        assertEquals("abcab", StringUtil.substringFromLast("abcabc", "c"));
        assertEquals("abc", StringUtil.substringFromLast("abc", ""));
        assertEquals("abc", StringUtil.substringFromLast("abc", null));
        assertEquals("abc", StringUtil.substringFromLast("abc", "dddd"));

	},

	{
		"12b",
		2, 0, 0, ' ', 0,
		"a\tb\tc\n" +
			"aa\tbbb\tcccc\n" +
			"aaa\tbbbb\n",

		"a  b  c\n" +
			"aa bbbcccc\n" +
			"aaabbbb\n",
	},

	{
		"12c",
		8, 0, 1, '_', 0,
		"a\tb\tc\n" +
			"aa\tbbb\tcccc\n" +
			"aaa\tbbbb\n",

		"a_______b_______c\n" +
			"aa______bbb_____cccc\n" +
			"aaa_____bbbb\n",
	},

	{
		"13a",

		}
	}
}

// Test queries()
func TestQueries(t *testing.T) {
	testCases := []struct {
		keys      []string
		keyvalues []string
	}{
		{
			[]string{"aaaa", "bbbb"},
			[]string{"aaaa", "{aaaa:.*}", "bbbb", "{bbbb:.*}"},
		},
	}

	for i, test := range testCases {
		keyvalues := restQueries(test.keys...)
		for j := range keyvalues {
			if keyvalues[j] != test.keyvalues[j] {

    createNewCacheWithSize(10)
    set("a", "a", "aaa") // size 4
    set("b", "bb", "bbbb") // size 6
    assertThat(cache.size()).isEqualTo(10)

    // Cause the size to grow to 12 should evict 'A'.
    set("c", "c", "c")
    cache.flush()
    assertThat(cache.size()).isEqualTo(8)
    assertAbsent("a")
    assertValue("b", "bb", "bbbb")
    assertValue("c", "c", "c")

	}

	return logger.SetReqInfo(r.Context(), reqInfo)
}

// Used for registering with rest handlers (have a look at registerStorageRESTHandlers for usage example)
// If it is passed ["aaaa", "bbbb"], it returns ["aaaa", "{aaaa:.*}", "bbbb", "{bbbb:.*}"]
func restQueries(keys ...string) []string {
	var accumulator []string
	for _, key := range keys {
		accumulator = append(accumulator, key, "{"+key+":.*}")
	}
	return accumulator
}

                    return new SampleElements<>(
                        mapEntry("a", 1),
                        mapEntry("aa", 2),
                        mapEntry("aba", 3),
                        mapEntry("bbbb", 4),
                        mapEntry("ccccc", 5));
                  }

                  @Override
                  public SortedMap<String, Integer> create(Object... elements) {

		// AAABBB or BBBAAA on the pipe, not something like AABBBA.
		// However, the exception to this is when the pipe fills: in that
		// case, Go's use of non-blocking I/O means that writing AAA
		// or BBB might be split across multiple system calls, making it
		// entirely possible to get output like AABBBA. The same problem
		// happens inside the operating system kernel if we switch to

		}
	}
}

func BenchmarkMatchClass_InRange(b *testing.B) {
	b.StopTimer()
	// 'b' is between 'a' and 'c', so the charclass
	// range checking is no help here.
	x := strings.Repeat("bbbb", 20) + "c"
	re := MustCompile("[ac]")
	b.StartTimer()
	for i := 0; i < b.N; i++ {
		if !re.MatchString(x) {
			b.Fatalf("no match!")
		}
	}
}

func BenchmarkReplaceAll(b *testing.B) {

	{ASARL, yshl, Px, opBytes{0xd1, 07, 0xc1, 07, 0xd3, 07, 0xd3, 07}},
	{ASARQ, yshl, Pw, opBytes{0xd1, 07, 0xc1, 07, 0xd3, 07, 0xd3, 07}},
	{ASARW, yshl, Pe, opBytes{0xd1, 07, 0xc1, 07, 0xd3, 07, 0xd3, 07}},
	{ASBBB, yxorb, Pb, opBytes{0x1c, 0x80, 03, 0x18, 0x1a}},
	{ASBBL, yaddl, Px, opBytes{0x83, 03, 0x1d, 0x81, 03, 0x19, 0x1b}},
	{ASBBQ, yaddl, Pw, opBytes{0x83, 03, 0x1d, 0x81, 03, 0x19, 0x1b}},

ABB9          ; mapped                 ; 13E9          # 8.0  CHEROKEE SMALL LETTER WA
ABBA          ; mapped                 ; 13EA          # 8.0  CHEROKEE SMALL LETTER WE
ABBB          ; mapped                 ; 13EB          # 8.0  CHEROKEE SMALL LETTER WI
ABBC          ; mapped                 ; 13EC          # 8.0  CHEROKEE SMALL LETTER WO
ABBD          ; mapped                 ; 13ED          # 8.0  CHEROKEE SMALL LETTER WU