public void CanConvertFrom()
{
EnumConverter converter = new EnumConverter(typeof(E));
Assert.IsTrue(converter.CanConvertFrom(typeof(string)), "#A1");
Assert.IsFalse(converter.CanConvertFrom(typeof(Enum)), "#A2");
Assert.IsFalse(converter.CanConvertFrom(typeof(object)), "#A3");
Assert.IsFalse(converter.CanConvertFrom(typeof(int)), "#A4");
Assert.IsTrue(converter.CanConvertFrom(typeof(InstanceDescriptor)), "#A5");
Assert.IsFalse(converter.CanConvertFrom(typeof(string [])), "#A6");
#if NET_2_0
Assert.IsTrue(converter.CanConvertFrom(typeof(Enum [])), "#A7");
#else
Assert.IsFalse(converter.CanConvertFrom(typeof(Enum [])), "#A7");
#endif
converter = new EnumConverter(typeof(E2));
Assert.IsTrue(converter.CanConvertFrom(typeof(string)), "#B1");
Assert.IsFalse(converter.CanConvertFrom(typeof(Enum)), "#B2");
Assert.IsFalse(converter.CanConvertFrom(typeof(object)), "#B3");
Assert.IsFalse(converter.CanConvertFrom(typeof(int)), "#B4");
Assert.IsTrue(converter.CanConvertFrom(typeof(InstanceDescriptor)), "#B5");
Assert.IsFalse(converter.CanConvertFrom(typeof(string [])), "#B6");
#if NET_2_0
Assert.IsTrue(converter.CanConvertFrom(typeof(Enum [])), "#B7");
#else
Assert.IsFalse(converter.CanConvertFrom(typeof(Enum [])), "#B7");
#endif
}
/// <summary>
/// Helper method for converting from a string to an enum using a converter.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="value"></param>
/// <param name="culture">The culture to use to read the localized strings</param>
/// <returns></returns>
public static Nullable <T> ConvertFromType <T>(string value, CultureInfo culture)
where T : struct
{
Nullable <T> returnValue = new Nullable <T>();
returnValue = returnValue.GetValueOrDefault();
if (value == null)
{
return(returnValue);
}
EnumConverter converter = GetEnumConverter <T>();
if (converter == null)
{
return(returnValue);
}
if (converter.CanConvertFrom(value.GetType()))
{
object converted = converter.ConvertFrom(null, culture, value);
if (converted != null && (converted is T))
{
returnValue = (T)converted;
}
}
return(returnValue);
}
public static void CanConvertFromInt32()
{
// Arrange
var converter = new EnumConverter(typeof(Answer));
// Act
var result = converter.CanConvertFrom(typeof(int));
// Assert
Assert.True(result);
}
public override bool CanConvertFrom(ITypeDescriptorContext context, Type sourceType)
{
return(_enumConverter.CanConvertFrom(context, sourceType));
}
public void CanConvertFrom()
{
var converter = new EnumConverter(typeof(TestEnum));
Assert.IsTrue(converter.CanConvertFrom(typeof(string)));
}