public void EndsWithCodeUnit(string s, char c)
{
Utf8String u8s = new Utf8String(s);
Utf8CodeUnit codeUnit = (Utf8CodeUnit)(byte)c;
Assert.Equal(s.EndsWith(c.ToString()), u8s.EndsWith(codeUnit));
}
public void IndexOfUtf8Character(string s, char character)
{
int expected = s.IndexOf(character);
Utf8String u8s = new Utf8String(s);
Utf8CodeUnit u8codeUnit = (Utf8CodeUnit)(byte)(character);
Assert.Equal(expected, u8s.IndexOf(u8codeUnit));
}
public void ConvertToChar(bool shouldThrow, Utf8CodeUnit codeUnit)
{
if (shouldThrow)
{
Assert.Throws <ArgumentOutOfRangeException>(() => { var c = (char)codeUnit; });
}
else
{
Assert.Equal((int)codeUnit.Value, (int)((char)codeUnit));
}
}
public void CtorChar(bool shouldThrow, char value)
{
if (shouldThrow)
{
Assert.Throws <ArgumentOutOfRangeException>(() => { var codeUnit = new Utf8CodeUnit(value); });
}
else
{
Assert.Equal((byte)value, (new Utf8CodeUnit(value)).Value);
}
}
public void TryCreateFrom(bool expectedNegated, char value)
{
bool expected = !expectedNegated;
Utf8CodeUnit codeUnit;
Assert.Equal(expected, Utf8CodeUnit.TryCreateFrom(value, out codeUnit));
if (expected)
{
Assert.Equal((int)value, (int)codeUnit.Value);
}
}
public void GetHashCodeIsDifferentForEveryPossibleCodeUnit()
{
HashSet<int> hashes = new HashSet<int>();
for (int i = byte.MinValue; i <= byte.MaxValue; i++)
{
Utf8CodeUnit codeUnit = new Utf8CodeUnit((byte)i);
Assert.True(hashes.Add(codeUnit.GetHashCode()));
}
// sanity
Assert.Equal(256, hashes.Count);
}
public void GetHashCodeIsDifferentForEveryPossibleCodeUnit()
{
HashSet <int> hashes = new HashSet <int>();
for (int i = byte.MinValue; i <= byte.MaxValue; i++)
{
Utf8CodeUnit codeUnit = new Utf8CodeUnit((byte)i);
Assert.True(hashes.Add(codeUnit.GetHashCode()));
}
// sanity
Assert.Equal(256, hashes.Count);
}
public void SubstringToCodeUnit(string s, char c)
{
Utf8String u8s = new Utf8String(s);
Utf8CodeUnit codeUnit = (Utf8CodeUnit)(byte)(c);
Utf8String u8result;
int idx = s.IndexOf(c);
bool expectedToFind = idx != -1;
Assert.Equal(expectedToFind, u8s.TrySubstringTo(codeUnit, out u8result));
if (expectedToFind)
{
string expected = s.Substring(0, idx);
Assert.Equal(new Utf8String(expected), u8result);
Assert.Equal(expected, u8result.ToString());
}
}
private static bool IsFalse(Utf8String text)
{
if (text.Length < 5)
{
return(false);
}
Utf8CodeUnit firstChar = text[0];
if (firstChar != 'f' && firstChar != 'F')
{
return(false);
}
Utf8CodeUnit secondChar = text[1];
if (secondChar != 'a' && secondChar != 'A')
{
return(false);
}
Utf8CodeUnit thirdChar = text[2];
if (thirdChar != 'l' && thirdChar != 'L')
{
return(false);
}
Utf8CodeUnit fourthChar = text[3];
if (fourthChar != 's' && fourthChar != 'S')
{
return(false);
}
Utf8CodeUnit fifthChar = text[4];
if (fifthChar != 'e' && fifthChar != 'E')
{
return(false);
}
return(true);
}
public static bool TryParseBoolean(Utf8String text, Format.Parsed format,
out bool value, out int bytesConsumed)
{
bytesConsumed = 0;
value = default(bool);
if (text.Length < 1)
{
return(false);
}
Utf8CodeUnit firstCodeUnit = text[0];
if (firstCodeUnit == '1')
{
bytesConsumed = 1;
value = true;
return(true);
}
else if (firstCodeUnit == '0')
{
bytesConsumed = 1;
value = false;
return(true);
}
else if (IsTrue(text))
{
bytesConsumed = 4;
value = true;
return(true);
}
else if (IsFalse(text))
{
bytesConsumed = 5;
value = false;
return(true);
}
else
{
return(false);
}
}
private static bool IsTrue(Utf8String text)
{
if (text.Length < 4)
{
return(false);
}
Utf8CodeUnit firstChar = text[0];
if (firstChar != 't' && firstChar != 'T')
{
return(false);
}
Utf8CodeUnit secondChar = text[1];
if (secondChar != 'r' && secondChar != 'R')
{
return(false);
}
Utf8CodeUnit thirdChar = text[2];
if (thirdChar != 'u' && thirdChar != 'U')
{
return(false);
}
Utf8CodeUnit fourthChar = text[3];
if (fourthChar != 'e' && fourthChar != 'E')
{
return(false);
}
return(true);
}
public void EqualsChar(bool expected, Utf8CodeUnit codeUnit, char c)
{
Assert.Equal(expected, codeUnit.Equals(c));
}
public void EqualsBoxedChar(bool expected, Utf8CodeUnit codeUnit, char c)
{
Assert.Equal(expected, codeUnit.Equals((object)c));
}
public void EqualsAnyOtherObject(bool expected, Utf8CodeUnit codeUnit, object obj)
{
Assert.Equal(expected, codeUnit.Equals(obj));
}
public void EqualsAnyOtherObject(bool expected, Utf8CodeUnit codeUnit, object obj)
{
Assert.Equal(expected, codeUnit.Equals(obj));
}
public void EqualsBoxedUtf8CodeUnit(bool expected, Utf8CodeUnit a, Utf8CodeUnit b)
{
Assert.Equal(expected, a.Equals((object)b));
Assert.Equal(expected, b.Equals((object)a));
}
public void IsFirstCodeUnitInEncodedCodePoint(bool expected, Utf8CodeUnit codeUnit)
{
Assert.Equal(expected, Utf8CodeUnit.IsFirstCodeUnitInEncodedCodePoint(codeUnit));
}
public void EqualsOperator(bool expected, Utf8CodeUnit a, Utf8CodeUnit b)
{
Assert.Equal(expected, a == b);
Assert.Equal(expected, b == a);
}
public void EqualsBoxedUtf8CodeUnit(bool expected, Utf8CodeUnit a, Utf8CodeUnit b)
{
Assert.Equal(expected, a.Equals((object)b));
Assert.Equal(expected, b.Equals((object)a));
}
public void EqualsChar(bool expected, Utf8CodeUnit codeUnit, char c)
{
Assert.Equal(expected, codeUnit.Equals(c));
}
public void ConvertToByte(Utf8CodeUnit codeUnit)
{
Assert.Equal(codeUnit.Value, (byte)codeUnit);
}
public void IsAscii(bool expected, Utf8CodeUnit codeUnit)
{
Assert.Equal(expected, Utf8CodeUnit.IsAscii(codeUnit));
}
public void NotEqualsOperator(bool expectedNegated, Utf8CodeUnit a, Utf8CodeUnit b)
{
Assert.Equal(!expectedNegated, a != b);
Assert.Equal(!expectedNegated, b != a);
}
public void EqualsOperator(bool expected, Utf8CodeUnit a, Utf8CodeUnit b)
{
Assert.Equal(expected, a == b);
Assert.Equal(expected, b == a);
}
public void ConvertToByte(Utf8CodeUnit codeUnit)
{
Assert.Equal(codeUnit.Value, (byte)codeUnit);
}
public void CtorChar(bool shouldThrow, char value)
{
if (shouldThrow)
{
Assert.Throws<ArgumentOutOfRangeException>(() => { var codeUnit = new Utf8CodeUnit(value); });
}
else
{
Assert.Equal((byte)value, (new Utf8CodeUnit(value)).Value);
}
}
public void EqualsUtf8CodeUnit(bool expected, Utf8CodeUnit a, Utf8CodeUnit b)
{
Assert.Equal(expected, a.Equals(b));
Assert.Equal(expected, b.Equals(a));
}
public void IsAscii(bool expected, Utf8CodeUnit codeUnit)
{
Assert.Equal(expected, Utf8CodeUnit.IsAscii(codeUnit));
}
public void ConvertToChar(bool shouldThrow, Utf8CodeUnit codeUnit)
{
if (shouldThrow)
{
Assert.Throws<ArgumentOutOfRangeException>(() => { var c = (char)codeUnit; });
}
else
{
Assert.Equal((int)codeUnit.Value, (int)((char)codeUnit));
}
}
public void NotEqualsOperator(bool expectedNegated, Utf8CodeUnit a, Utf8CodeUnit b)
{
Assert.Equal(!expectedNegated, a != b);
Assert.Equal(!expectedNegated, b != a);
}
public void EqualsUtf8CodeUnit(bool expected, Utf8CodeUnit a, Utf8CodeUnit b)
{
Assert.Equal(expected, a.Equals(b));
Assert.Equal(expected, b.Equals(a));
}
public void IsFirstCodeUnitInEncodedCodePoint(bool expected, Utf8CodeUnit codeUnit)
{
Assert.Equal(expected, Utf8CodeUnit.IsFirstCodeUnitInEncodedCodePoint(codeUnit));
}
public void EqualsBoxedChar(bool expected, Utf8CodeUnit codeUnit, char c)
{
Assert.Equal(expected, codeUnit.Equals((object)c));
}
