public void CreateInstanceAutoFillGenericParameters_GenericTypeWithBaseClassConstraintPassed_ExceptionThrown()
{
Assert.Throws <ArgumentException>(() =>
{
ActivatorUtils.CreateInstanceAutoFillGenericParameters(typeof(GenericClassWithBaseClassConstraint <>));
});
}
/// <summary>
/// Gets text to be used as a member value
/// </summary>
/// <param name="memberInfo"></param>
/// <returns>The text to be used as a member value. Null if the member has no value or value cannot be determined.</returns>
public string GetMemberValueText(MemberInfo memberInfo)
{
if (memberInfo.DeclaringType == null)
{
return(null);
}
try
{
object instance = memberInfo.IsStatic() ? null : ActivatorUtils.CreateInstanceAutoFillGenericParameters(memberInfo.DeclaringType);
var valueObj = new object();
object valueObjGuard = valueObj;
switch (memberInfo)
{
case FieldInfo fieldInfo:
valueObj = fieldInfo.GetValue(instance);
break;
case PropertyInfo propertyInfo:
valueObj = propertyInfo.GetValue(instance);
break;
}
// if valueObj hasn't been assigned in the switch
if (valueObj == valueObjGuard)
{
return(null);
}
// if valueObj's value is the default value for its type
if (valueObj == null || valueObj.Equals(TypeUtils.GetDefaultValue(valueObj.GetType())))
{
return(null);
}
string memberType = _typeService.GetTsTypeName(memberInfo).GetTsTypeUnion(0);
string quote = GeneratorOptions.SingleQuotes ? "'" : "\"";
switch (valueObj)
{
case Guid valueGuid when memberType == "string":
return(quote + valueGuid + quote);
case DateTime valueDateTime when memberType == "Date":
return($@"new Date({quote}{valueDateTime}{quote})");
case DateTime valueDateTime when memberType == "string":
return(quote + valueDateTime + quote);
case DateTimeOffset valueDateTimeOffset when memberType == "Date":
return($@"new Date({quote}{valueDateTimeOffset}{quote})");
case DateTimeOffset valueDateTimeOffset when memberType == "string":
return(quote + valueDateTimeOffset + quote);
default:
return(JsonConvert.SerializeObject(valueObj).Replace("\"", quote));
}
}
catch (MissingMethodException e)
{
_logger?.Log($"Cannot determine the default value for member '{memberInfo.DeclaringType.FullName}.{memberInfo.Name}', because type '{memberInfo.DeclaringType.FullName}' has no default constructor.", LogLevel.Debug);
}
catch (ArgumentException e) when(e.InnerException is TypeLoadException)
{
_logger?.Log($"Cannot determine the default value for member '{memberInfo.DeclaringType.FullName}.{memberInfo.Name}', because type '{memberInfo.DeclaringType.FullName}' has generic parameters with base class or interface constraints.", LogLevel.Debug);
}
catch (Exception e)
{
_logger?.Log($"Cannot determine the default value for member '{memberInfo.DeclaringType.FullName}.{memberInfo.Name}', because an unknown exception occurred: '{e.Message}'", LogLevel.Debug);
}
return(null);
}
public void CreateInstanceAutoFillGenericParameters_GenericTypeWithDefaultConstructorConstraintPassed_InstanceCreated()
{
object instance = ActivatorUtils.CreateInstanceAutoFillGenericParameters(typeof(GenericClassWithDefaultConstructorConstraint <>));
Assert.True(instance is GenericClassWithDefaultConstructorConstraint <object>);
}
public void CreateInstanceAutoFillGenericParameters_GenericTypeWithClassAndStructConstraintsPassed_InstanceCreated()
{
object instance = ActivatorUtils.CreateInstanceAutoFillGenericParameters(typeof(GenericClassWithClassAndStructConstraints <, ,>));
Assert.True(instance is GenericClassWithClassAndStructConstraints <object, int, object>);
}
public void CreateInstanceAutoFillGenericParameters_NonGenericTypePassed_InstanceCreated()
{
object instance = ActivatorUtils.CreateInstanceAutoFillGenericParameters(typeof(NonGenericClass));
Assert.True(instance is NonGenericClass);
}