// Write text to the filter one character at a time.
	var out strings.Builder
	f, exitStr := newExitCodeFilter(&out)
	// Embed a "fake" exit code in the middle to check that we don't get caught on it.
	pre := "abc" + exitStr + "123def"
	text := pre + exitStr + `1`
	for i := 0; i < len(text); i++ {
		_, err := f.Write([]byte{text[i]})
		if err != nil {
			t.Fatal(err)
		}
	}

	// The "pre" output should all have been flushed already.

    /**
     * @throws Exception
     */
    @Test
    public void testReplace() throws Exception {
        assertEquals("1", "1bc45", StringUtil.replace("12345", "23", "bc"));
        assertEquals("2", "1234ef", StringUtil.replace("12345", "5", "ef"));
        assertEquals("3", "ab2345", StringUtil.replace("12345", "1", "ab"));
        assertEquals("4", "a234a", StringUtil.replace("12341", "1", "a"));

        assertEquals(0, new BigDecimal("0.0000001").compareTo(BigDecimalConversionUtil.toBigDecimal(new Double(0.0000001D))));

        assertEquals(0, new BigDecimal("0.123").compareTo(BigDecimalConversionUtil.toBigDecimal(new Double(0.123D))));
        assertEquals(0, new BigDecimal("0.0123").compareTo(BigDecimalConversionUtil.toBigDecimal(new Double(0.0123D))));

   1249
   124E-124F
   1257
   1259
   125E-125F
   1287
   1289
   128E-128F
   12AF
   12B1
   12B6-12B7
   12BF
   12C1
   12C6-12C7
   12CF
   12D7
   12EF
   130F
   1311
   1316-1317
   131F
   1347
   135B-1360
   137D-139F
   13F5-1400
   1677-167F
   169D-169F
   16F1-16FF
   170D
   1715-171F
   1737-173F
   1754-175F

12000..1236E  ; valid                                  # 5.0  CUNEIFORM SIGN A..CUNEIFORM SIGN ZUM
1236F..12398  ; valid                                  # 7.0  CUNEIFORM SIGN KAP ELAMITE..CUNEIFORM SIGN UM TIMES ME
12399         ; valid                                  # 8.0  CUNEIFORM SIGN U U
1239A..123FF  ; disallowed                             # NA   <reserved-1239A>..<reserved-123FF>