public void TestStringConverter()
{
StringConverter stringConverter = new StringConverter();
Assert.True(stringConverter.CanConvertTo(typeof(string)));
Assert.True(stringConverter.CanConvertTo(typeof(StringBuilder)));
Assert.False(stringConverter.CanConvertTo(typeof(float)));
Assert.False(stringConverter.CanConvertTo(typeof(double)));
Assert.False(stringConverter.CanConvertTo(typeof(decimal)));
Assert.False(stringConverter.CanConvertTo(typeof(Enum)));
Assert.True(stringConverter.CanConvertFrom(" 123 "));
Assert.True(stringConverter.CanConvertFrom("1.0"));
Assert.True(stringConverter.CanConvertFrom(" Dog"));
Assert.True(stringConverter.CanConvertFrom(" True "));
Assert.True(stringConverter.CanConvertFrom(" abc"));
Assert.True(stringConverter.CanConvertFrom("1.2E3"));
Assert.True(stringConverter.CanConvertFrom(" 0xFF"));
Assert.True(stringConverter.CanConvertFrom("Hello, World!"));
Assert.True(stringConverter.CanConvertFrom("The quick brown fox jumps over the lazy dog."));
Assert.Equal("Hello, World!", stringConverter.Convert(typeof(string), "Hello, World!"));
Assert.Equal("The quick brown fox jumps over the lazy dog.", stringConverter.Convert(typeof(object), "The quick brown fox jumps over the lazy dog."));
StringBuilder stringBuilder = new StringBuilder("Hello, World!");
Assert.True(stringBuilder.Equals(stringConverter.Convert(typeof(StringBuilder), "Hello, World!") as StringBuilder));
stringBuilder = new StringBuilder("The quick brown fox");
stringBuilder.Append(" jumps over the lazy dog.");
Assert.True(stringBuilder.Equals(stringConverter.Convert(typeof(StringBuilder), "The quick brown fox jumps over the lazy dog.") as StringBuilder));
}
public override bool CanConvertFrom(object sourceValue, Type destinationType)
{
if (sourceValue == null)
{
return(true);
}
if (sourceValue.GetType() == typeof(string))
{
return(true);
}
StringConverter sc = new StringConverter();
return(sc.CanConvertFrom(sourceValue.GetType()));
}
