public void ForCharacteraandStringnullShouldReturnnull()
{
var a = new IOptional(new Character('a'));
IMatch actual = a.Match(null);
Assert.Null(actual.RemainingText());
}
public void ForCharacterMinusandString123ShouldReturntrue()
{
var sign = new IOptional(new Character('-'));
IMatch actual = sign.Match("123");
Assert.True(actual.Succes());
}
public void ForCharacteraandStringnullShouldReturnTrue()
{
var a = new IOptional(new Character('a'));
IMatch actual = a.Match(null);
Assert.True(actual.Succes());
}
public void ForCharacterAAndStringAbcShouldReturnTrue()
{
IOptional a = new IOptional(new Character('a'));
IMatch actual = a.Match(Text);
Assert.True(actual.Succes());
}
public void ForCharacteraandStringEmptyStringShouldReturnEmptyString()
{
var a = new IOptional(new Character('a'));
IMatch actual = a.Match(string.Empty);
Assert.Equal(string.Empty, actual.RemainingText());
}
public void ForCharacteraandStringbcShouldReturnbc()
{
var a = new IOptional(new Character('a'));
IMatch actual = a.Match("bc");
Assert.Equal("bc", actual.RemainingText());
}
public void ForCharacterMinusandStringMinus123ShouldReturn123()
{
var a = new IOptional(new Character('-'));
IMatch actual = a.Match("-123");
Assert.Equal("123", actual.RemainingText());
}
public static TValue GetValue <TValue>(this IOptional <TValue> optional)
{
return(optional.Match(
exists: val => val,
nothing: () => { throw new Exception("Cannot get value on Nothing"); }));
}
public static Boolean HasValue <TValue>(this IOptional <TValue> optional)
{
return(optional.Match(
exists: val => true,
nothing: () => false));
}