public void NumericsOnlyWorks()
{
Assert.AreEqual(string.Empty, MHString.NumericsOnly("abcdef"), "t1");
Assert.AreEqual("123", MHString.NumericsOnly("abc123"), "t2");
Assert.AreEqual("123", MHString.NumericsOnly("abcdefghijklmnopqrstuv123"), "t3");
Assert.AreEqual(string.Empty, MHString.NumericsOnly("adkhfkekhqhbeebfeb*@#&#^#^ dki"), "t4");
}
public void StrRightWorks()
{
Assert.AreEqual("EFG", MHString.StrRight("ABCDEFG", 3), "t1");
Assert.AreEqual("ABCDEFG", MHString.StrRight("ABCDEFG", 99), "t2");
Assert.AreEqual(string.Empty, MHString.StrRight("ABCDEFG", 0), "t3");
Assert.AreEqual(string.Empty, MHString.StrRight("ABCDEFG", -1), "t4");
}
// find lowest Hamming Distance for each possible keysize from MIN_KEYSIZE to MAX_KEYSIZE
// Note: With minimal samples, you may not get the correct lowest calculated value. (using 1 or 2 for example)
public static IEnumerable <HammingScore> FindProbableKeySize(byte[] cipherBytes, int minKeySize = 1, int maxKeySize = 40, int numSamples = 6, int topCnt = 3)
{
var hamList = new List <HammingScore>();
if (numSamples < 1)
{
throw new ArgumentException("Number of samples must be one or greater");
}
int minCipherSizeReq = (numSamples + 1) * maxKeySize;
if (minCipherSizeReq > cipherBytes.Length)
{
throw new ArgumentException($"Cipher bytes must be at least {minCipherSizeReq} bytes to accomodate number of samples.");
}
for (int keySize = minKeySize; keySize <= maxKeySize; keySize++)
{
uint runTot = 0;
for (int sampleNum = 0; sampleNum < numSamples; sampleNum++)
{
int startNdx = sampleNum * keySize;
runTot += MHString.HammingDistance(cipherBytes, startNdx, startNdx + keySize, keySize);
}
double avg = Math.Round(((double)runTot / (double)(keySize * numSamples)), 5);
hamList.Add(new HammingScore(keySize, numSamples, avg));
}
return(hamList.OrderBy(h => h.AvgScore).Take(topCnt).ToList());
}
public void TruncateWorksWithPositiveNumbers()
{
Assert.AreEqual(string.Empty, MHString.Truncate("", 5), string.Empty, "t1");
Assert.AreEqual("1", MHString.Truncate("123456789", 1), "t2");
Assert.AreEqual("123456789", MHString.Truncate("123456789", 9), "t3");
Assert.AreEqual("123456789", MHString.Truncate("123456789", 99), "t4");
Assert.AreEqual(string.Empty, MHString.Truncate("123456789", 0), "t5");
}
public void SplitWithImbalancedReturnsException()
{
var opts = new CSVParseOpts {
EnclosureDelimiter = '|', AreFieldsEnclosed = true, TrimOutside = false, TrimInEnclosure = false
};
string[] output = MHString.CSVSplit(TESTSTR_BAD1, opts);
}
public void NumericsPlusExtraWorks()
{
Assert.AreEqual(string.Empty, MHString.NumericsPlusExtra("abcdef", ".,"), "t1");
Assert.AreEqual("123", MHString.NumericsPlusExtra("abc123", ".,"), "t2");
Assert.AreEqual("999,282,282", MHString.NumericsPlusExtra("999,282,282", ".,"), "t3");
Assert.AreEqual("abc123", MHString.NumericsPlusExtra("abc123", "cba"), "t4");
Assert.AreEqual("12345678.90", MHString.NumericsPlusExtra("12,345,678.90", "1234567890."), "t5");
}
public void CharCountWorks()
{
Assert.AreEqual(2, MHString.CharCount("1,2,3", ','), "t1");
Assert.AreEqual(0, MHString.CharCount("123", ','), "t2");
Assert.AreEqual(3, MHString.CharCount("13933838, 3030337300338, 3 ,23", ','), "t3");
Assert.AreEqual(0, MHString.CharCount("", ','), "t4");
Assert.AreEqual(3, MHString.CharCount("1,,,99", ','), "t5");
}
public void SplitWithEnclosureNoTrimAndThreeEmptyFields2Succeeds()
{
var opts = new CSVParseOpts {
EnclosureDelimiter = '|', AreFieldsEnclosed = true, TrimOutside = false, TrimInEnclosure = false
};
string[] output = MHString.CSVSplit(TESTSTR8, opts);
Assert.AreEqual(3, output.Length);
Assert.AreEqual(2, output.GetUpperBound(0));
}
public void SubStrSafeWorks()
{
Assert.AreEqual("A", MHString.SubstringSafe("ABCDEFGH", 0, 1), "t1");
Assert.AreEqual(string.Empty, MHString.SubstringSafe("ABCDEFGH", -1, 1), "t2");
Assert.AreEqual(string.Empty, MHString.SubstringSafe("ABCDEFGH", 99, 0), "t3");
Assert.AreEqual(string.Empty, MHString.SubstringSafe("ABCDEFGH", 99, 99), "t4");
Assert.AreEqual("ABCDEFGH", MHString.SubstringSafe("ABCDEFGH", 0, 99), "t5");
Assert.AreEqual(string.Empty, MHString.SubstringSafe("", 0, 99), "t6");
Assert.AreEqual(string.Empty, MHString.SubstringSafe("", 1, 1), "t7");
}
public void SplitNoEnclosureWithTrimWithEmptySucceeds()
{
var opts = new CSVParseOpts {
AreFieldsEnclosed = false, TrimOutside = true
};
opts.AreFieldsEnclosed = false;
string[] output = MHString.CSVSplit(string.Empty, opts);
Assert.AreEqual(0, output.Length, "Length of array not zero");
Assert.AreEqual(-1, output.GetUpperBound(0), "Number of array elements not zero");
}
public void SplitNoEnclosureTrimOutsideAndOneFieldSucceeds()
{
var opts = new CSVParseOpts {
EnclosureDelimiter = '|', AreFieldsEnclosed = false, TrimOutside = true, TrimInEnclosure = false
};
string[] output = MHString.CSVSplit(TESTSTR12, opts);
Assert.AreEqual(1, output.Length);
Assert.AreEqual(0, output.GetUpperBound(0));
Assert.AreEqual("Field1", output[0]);
}
public void ReplaceCCWorks()
{
Assert.AreEqual("abc", MHString.ReplaceControlChars("abc", '.'), "t1");
string Test = string.Empty;
for (int z = 0; z < 32; z++)
{
Test += Convert.ToChar(z);
}
Assert.AreEqual("................................", MHString.ReplaceControlChars(Test, '.'), "t1");
Assert.AreEqual("................................A", MHString.ReplaceControlChars(Test + "A", '.'), "t2");
}
public void SplitWithEnclosureTrimOutsideAndInsideAndThreeFieldsSucceeds()
{
var opts = new CSVParseOpts {
EnclosureDelimiter = '|', AreFieldsEnclosed = true, TrimOutside = true, TrimInEnclosure = true
};
string[] output = MHString.CSVSplit(TESTSTR11, opts);
Assert.AreEqual(3, output.Length);
Assert.AreEqual(2, output.GetUpperBound(0));
Assert.AreEqual("Field1", output[0]);
Assert.AreEqual("Field2", output[1]);
Assert.AreEqual("Field3", output[2]);
}
public void SplitWithDoubleEnclosureWithFullTrimSucceeds()
{
var opts = new CSVParseOpts {
TrimOutside = true, AreFieldsEnclosed = true, EnclosureDelimiter = '|', TrimInEnclosure = true
};
string[] output = MHString.CSVSplit(TESTSTR16, opts);
Assert.AreEqual(2, output.GetUpperBound(0));
Assert.AreEqual(3, output.Length);
Assert.AreEqual("my|pipes", output[0]);
Assert.AreEqual("are", output[1]);
Assert.AreEqual("strong", output[2]);
}
public void SplitNoEnclosureNoTrimSucceeds()
{
var opts = new CSVParseOpts {
AreFieldsEnclosed = false, TrimOutside = false
};
string[] output = MHString.CSVSplit(TESTSTR1, opts);
Assert.AreEqual(4, output.GetUpperBound(0));
Assert.AreEqual(5, output.Length);
Assert.AreEqual("field1", output[0]);
Assert.AreEqual("3", output[2]);
Assert.AreEqual(string.Empty, output[3]);
Assert.AreEqual("5", output[4]);
}
public void SplitWithEnclosureNoTrimSucceeds()
{
var opts = new CSVParseOpts {
EnclosureDelimiter = '|', AreFieldsEnclosed = true, TrimOutside = false, TrimInEnclosure = false
};
string[] output = MHString.CSVSplit(TESTSTR3, opts);
Assert.AreEqual(4, output.Length);
Assert.AreEqual(3, output.GetUpperBound(0));
Assert.AreEqual(String.Empty, output[0]);
Assert.AreEqual("2", output[1]);
Assert.AreEqual("3", output[2]);
Assert.AreEqual(string.Empty, output[3]);
}
public void CharCleanFileNameWorks()
{
string IllegalNameSet = new string(Path.GetInvalidFileNameChars());
Assert.AreEqual(string.Empty, MHString.CleanFileName(@"/\/\/"), "t1");
Assert.AreEqual(".", MHString.CleanFileName(@"\\\.\\\"), "t2");
Assert.AreEqual("test.txt", MHString.CleanFileName("test.txt"), "t3");
Assert.AreEqual("ctest.txt", MHString.CleanFileName(@"c:\test.txt"), "t4");
Assert.AreEqual("test.txt", MHString.CleanFileName(@"\\\\tes\\t.txt"), "t5");
Assert.AreEqual("test.txt", MHString.CleanFileName(@"test::.txt"), "t6");
Assert.AreEqual("test.txt", MHString.CleanFileName(@"/test.txt"), "t7");
Assert.AreEqual("test.txt", MHString.CleanFileName(@"/test.txt"), "t8");
Assert.AreEqual(string.Empty, MHString.CleanFileName(IllegalNameSet), "t9");
Assert.AreEqual("abcdef", MHString.CleanFileName("abc" + IllegalNameSet + "def"), "t10");
}
public void UnquoteWorks()
{
char[] SINGLE_ONLY = new char[] { '\'' };
char[] DOUBLE_ONLY = new char[] { '"' };
char[] SINGLE_AND_DOUBLE = new char[] { '\'', '"' };
char[] TRUE_QUOTES = new char[] { '“', '”' };
// “test”
Assert.AreEqual("test", MHString.Unquote("'test'", SINGLE_ONLY), "test 1 failed");
Assert.AreEqual(" 'test' ", MHString.Unquote(" 'test' ", SINGLE_ONLY), "test 2 failed");
Assert.AreEqual("test", MHString.Unquote("'test'", SINGLE_AND_DOUBLE), "test 3 failed");
Assert.AreEqual("test", MHString.Unquote("\"test\"", SINGLE_AND_DOUBLE), "test 4 failed");
Assert.AreEqual("\"test\"", MHString.Unquote("'\"test\"'", SINGLE_AND_DOUBLE), "test 5 failed");
Assert.AreEqual("test", MHString.Unquote("'test\"", SINGLE_AND_DOUBLE), "test 6 failed"); // mixed quotes
Assert.AreEqual("'test'", MHString.Unquote("'test'", new char[] { }), "test 7 failed"); // empty quote set
Assert.AreEqual("test", MHString.Unquote("“test”", TRUE_QUOTES), "test 8 failed");
}
public void StrSegWorks()
{
Assert.AreEqual("123", MHString.StrSeg("123,456,789", 1, ','), "t1");
Assert.AreEqual("456", MHString.StrSeg("123,456,789", 2, ','), "t2");
Assert.AreEqual("789", MHString.StrSeg("123,456,789", 3, ','), "t3");
Assert.AreEqual(string.Empty, MHString.StrSeg("123,456,789", 4, ','), "t4");
Assert.AreEqual(string.Empty, MHString.StrSeg("123,456,789", 0, ','), "t5");
Assert.AreEqual(string.Empty, MHString.StrSeg("123,456,789", -1, ','), "t6");
Assert.AreEqual(string.Empty, MHString.StrSeg(",456,789", 1, ','), "t7");
Assert.AreEqual(string.Empty, MHString.StrSeg("", 2, ','), "t8");
Assert.AreEqual("456", MHString.StrSeg(",456,", 2, ','), "t9");
Assert.AreEqual("456", MHString.StrSeg(",456", 2, ','), "t10");
Assert.AreEqual("3456", MHString.StrSeg(",,3456", 3, ','), "t11");
Assert.AreEqual("123", MHString.StrSeg("123", 1, ','), "t12");
Assert.AreEqual("456", "123,456,789".StrSeg(2, 1, ','), "t13");
}
public void StrSegLocateWorks()
{
Assert.AreEqual(0, MHString.StrSegLocate("ABC", "", 1, 1, ',', false), 0, "t1");
Assert.AreEqual(0, MHString.StrSegLocate("", "123,456,789", 1, 1, ',', false), "t1");
Assert.AreEqual(2, MHString.StrSegLocate("ABC", "def,abc", 1, 1, ',', false), "t2");
Assert.AreEqual(2, MHString.StrSegLocate("ABC", "def,abc", 2, 1, ',', false), "t3");
Assert.AreEqual(0, MHString.StrSegLocate("abc", "def,abc", 3, 1, ',', false), "t4");
Assert.AreEqual(2, MHString.StrSegLocate("456", "123,456,789", 1, 1, ',', true), "t5");
Assert.AreEqual(0, MHString.StrSegLocate("xyz", "123,456,789", 1, 1, ',', true), "t6");
Assert.AreEqual(0, MHString.StrSegLocate("45", "123,456,789", 1, 1, ',', true), "t7");
Assert.AreEqual(0, MHString.StrSegLocate("456", "123,456,789", 1, 2, ',', true), "t8"); // IncBy is 2, so it should skip the 2nd value during checking
Assert.AreEqual(3, MHString.StrSegLocate("789", "123,456,789", 1, 1, ',', true), "t9");
Assert.AreEqual(0, MHString.StrSegLocate("9", "123,456,789", 1, 1, ',', true), "t10");
Assert.AreEqual(0, MHString.StrSegLocate("1", "123,456,789", 1, 1, ',', true), "t11");
Assert.AreEqual(0, MHString.StrSegLocate("123", "123,456,789", 2, 1, ',', true), "t12"); // we are starting at segment 2, so no hit
Assert.AreEqual(2, MHString.StrSegLocate("456", "123,456,789", 2, 1, ',', true), "t13"); // we are starting at segment 2, so it should hit
Assert.AreEqual(3, MHString.StrSegLocate("789", "123,456,789", 1, 2, ',', true), "t14");
Assert.AreEqual(2, MHString.StrSegLocate("AB" + "c", "def,abc", 1, 1, ',', false), "t15");
}
public void TryParseIPv4IsSuccessful()
{
string outputIP = string.Empty;
bool success;
success = MHString.TryParseIPv4("1.1.1.1", out outputIP);
Assert.IsTrue(success, "TryParse failed with 1.1.1.1");
Assert.AreEqual("1.1.1.1", outputIP, "normalized ip not 1.1.1.1");
success = MHString.TryParseIPv4("01.01.01.01", out outputIP);
Assert.IsTrue(success, "TryParse failed with leading zeros");
Assert.AreEqual("1.1.1.1", outputIP, "normalized ip not 1.1.1.1");
success = MHString.TryParseIPv4("1.1.1", out outputIP);
Assert.IsFalse(success, "TryParse succeeded with 1.1.1");
Assert.AreEqual(string.Empty, outputIP, "normalized ip not empty with 1.1.1");
success = MHString.TryParseIPv4("1.1.1.1.1", out outputIP);
Assert.IsFalse(success, "TryParse succeeded with 1.1.1.1.1");
Assert.AreEqual(string.Empty, outputIP, "normalized ip not empty with 1.1.1.1.1");
success = MHString.TryParseIPv4(null, out outputIP);
Assert.IsFalse(success, "TryParse succeeded with null");
Assert.AreEqual(string.Empty, outputIP, "normalized ip not empty with null");
success = MHString.TryParseIPv4(string.Empty, out outputIP);
Assert.IsFalse(success, "TryParse succeeded with empty");
Assert.AreEqual(string.Empty, outputIP, "normalized ip not empty with empty");
success = MHString.TryParseIPv4(" ", out outputIP);
Assert.IsFalse(success, "TryParse succeeded with whitespace");
Assert.AreEqual(string.Empty, outputIP, "normalized ip not empty with whitespace");
success = MHString.TryParseIPv4("1.1.1.A", out outputIP);
Assert.IsFalse(success, "TryParse succeeded with 1.1.1.A");
Assert.AreEqual(string.Empty, outputIP, "normalized ip not empty with 1.1.1.A");
success = MHString.TryParseIPv4("1.1.256.1", out outputIP);
Assert.IsFalse(success, "TryParse succeeded with 1.1.256.1");
Assert.AreEqual(string.Empty, outputIP, "normalized ip not empty with 1.1.256.1");
}
public void ByteToHexWorks()
{
Assert.AreEqual("1020ff", MHString.ByteToHex(new byte[] { 16, 32, 255 }, false), "t1");
Assert.AreEqual(string.Empty, MHString.ByteToHex(new byte[] { }, false), "t2");
Assert.AreEqual("0001FF", MHString.ByteToHex(new byte[] { 0, 1, 255 }, true), "t3");
}
public void ParseIPv4IsSuccessful()
{
Assert.AreEqual("1.1.1.1", MHString.ParseIPv4("1.1.1.1"), "IP Address Parse failed");
}
public void ParseIPv4WithLeadingZerosIsSuccessful()
{
Assert.AreEqual("1.1.1.1", MHString.ParseIPv4("01.01.01.01"), "IP Address Parse with leading zeros failed");
}
public void ParseIPv4WithTooManySegmentsRaisesException()
{
MHString.ParseIPv4("1.1.1.1.1");
}
public void ParseIPv4WithNullIPRaisesException()
{
MHString.ParseIPv4(null);
}
public void ParseIPv4WithEmptyIPRaisesException()
{
MHString.ParseIPv4(string.Empty);
}
public void ParseIPv4WithWhitespaceRaisesException()
{
MHString.ParseIPv4(" ");
}
public void ParseIPv4WithInvalidSegmentRaisesException()
{
MHString.ParseIPv4("1.1.1.A");
}
public void ParseIPv4WithOutOfRangeSegmentRaisesException()
{
MHString.ParseIPv4("1.1.256.1");
}
