async Task <object?> IRequestDataAttribute <WebApiController> .GetRequestDataAsync(
WebApiController controller,
Type type,
string parameterName)
{
var data = await controller.HttpContext.GetRequestFormDataAsync()
.ConfigureAwait(false);
var fieldName = FieldName ?? parameterName;
if (!data.ContainsKey(fieldName) && BadRequestIfMissing)
{
throw HttpException.BadRequest($"Missing form field {fieldName}.");
}
object result = null;
if (type.IsArray)
{
var fieldValues = data.GetValues(fieldName) ?? Array.Empty <string>();
if (!FromString.TryConvertTo(type, fieldValues, out result))
{
throw HttpException.BadRequest($"Cannot convert field {fieldName} to an array of {type.GetElementType().Name}.");
}
return(result);
}
else
{
var fieldValue = data.GetValues(fieldName)?.LastOrDefault();
if (fieldValue == null)
{
if (type.IsValueType)
{
var parameter = controller.CurrentMethod.GetParameters().FirstOrDefault(p => p.Name == parameterName);
result = parameter.HasDefaultValue ? parameter.DefaultValue : Activator.CreateInstance(type);
}
return(Task.FromResult(result));
}
if (!FromString.TryConvertTo(type, fieldValue, out result))
{
throw HttpException.BadRequest($"Cannot convert field {fieldName} to {type.Name}.");
}
return(result);
}
}
Task <object?> IRequestDataAttribute <WebApiController> .GetRequestDataAsync(
WebApiController controller,
Type type,
string parameterName)
{
var data = controller.HttpContext.GetRequestQueryData();
var fieldName = FieldName ?? parameterName;
if (!data.ContainsKey(fieldName) && BadRequestIfMissing)
{
throw HttpException.BadRequest($"Missing query field {fieldName}.");
}
if (type.IsArray)
{
var fieldValues = data.GetValues(fieldName) ?? Array.Empty <string>();
if (!FromString.TryConvertTo(type, fieldValues, out var result))
{
throw HttpException.BadRequest($"Cannot convert field {fieldName} to an array of {type.GetElementType().Name}.");
}
return(Task.FromResult(result));
}
else
{
var fieldValue = data.GetValues(fieldName)?.LastOrDefault();
if (fieldValue == null)
{
return(Task.FromResult(type.IsValueType ? Activator.CreateInstance(type) : null));
}
if (!FromString.TryConvertTo(type, fieldValue, out var result))
{
throw HttpException.BadRequest($"Cannot convert field {fieldName} to {type.Name}.");
}
return(Task.FromResult(result));
}
}
public void TryConvertTo_NonGeneric_OnNonConvertibleType_ReturnsFalse() => Assert.IsFalse(FromString.TryConvertTo(typeof(Action), SomeString, out _));
public void TryConvertTo_Generic_OnSuccess_ReturnsTrue() => Assert.IsTrue(FromString.TryConvertTo <int>(StringValue, out _));
public void TryConvertTo_Generic_OnSuccess_YieldsCorrectValue()
{
FromString.TryConvertTo <int>(StringValue, out var result);
Assert.AreEqual(IntValue, result);
}
public void TryConvertTo_Generic_OnNonConvertibleType_ReturnsFalse() => Assert.IsFalse(FromString.TryConvertTo <Action>(SomeString, out _));
public void TryConvertTo_Generic_OnInvalidString_ReturnsFalse() => Assert.IsFalse(FromString.TryConvertTo <int>(SomeString, out _));
public void TryConvertTo_NonGeneric_OnSuccess_ReturnsTrue() => Assert.IsTrue(FromString.TryConvertTo(typeof(int), StringValue, out _));
public void TryConvertTo_NonGeneric_OnSuccess_YieldsCorrectValue()
{
FromString.TryConvertTo(typeof(int), StringValue, out var result);
Assert.AreEqual(IntValue, result);
}
public void TryConvertTo_ArrayNonGeneric_OnNullType_ThrowsArgumentNullException() => Assert.Throws <ArgumentNullException>(() => FromString.TryConvertTo(null, ValidStringValues, out _));
public void TryConvertTo_NonGeneric_OnInvalidString_ReturnsFalse() => Assert.IsFalse(FromString.TryConvertTo(typeof(int), SomeString, out _));
public void TryConvertTo_ArrayGeneric_OnSuccess_YieldsCorrectValues()
{
FromString.TryConvertTo <int>(ValidStringValues, out var result);
CollectionAssert.AreEqual(ValidIntValues, (int[])result);
}
public void TryConvertTo_NonGeneric_OnNullType_ThrowsArgumentNullException() => Assert.Throws <ArgumentNullException>(() => FromString.TryConvertTo(null, SomeString, out _));
public void TryConvertTo_ArrayGeneric_OnNullStrings_ReturnsFalse() => Assert.IsFalse(FromString.TryConvertTo <int>((string[])null, out _));
public void TryConvertTo_ArrayGeneric_OnInvalidStrings_ReturnsFalse() => Assert.IsFalse(FromString.TryConvertTo <int>(InvalidStringValues, out _));
public void TryConvertTo_ArrayGeneric_OnNonConvertibleType_ReturnsFalse() => Assert.IsFalse(FromString.TryConvertTo <Action>(ValidStringValues, out _));
public void TryConvertTo_ArrayNonGeneric_OnNullStrings_ReturnsFalse() => Assert.IsFalse(FromString.TryConvertTo(typeof(int), (string[])null, out _));
public void TryConvertTo_ArrayNonGeneric_OnInvalidStrings_ReturnsFalse() => Assert.IsFalse(FromString.TryConvertTo(typeof(int), InvalidStringValues, out _));