private static Func <object> GetFromMethod(MemberDataAttribute memberDataAttribute, Type type)
{
var methodInfo = GetMemberInfoByName(type, t => t.GetRuntimeMethods(),
m => m.Name.Equals(memberDataAttribute.MemberName, StringComparison.InvariantCultureIgnoreCase));
if (methodInfo == null || !methodInfo.IsStatic)
{
return(null);
}
return(() => methodInfo.Invoke(null, null));
}
private static Func <object> GetFromField(MemberDataAttribute memberDataAttribute, Type type)
{
var fieldInfo = GetMemberInfoByName(type, t => t.GetRuntimeFields(),
f => f.Name.Equals(memberDataAttribute.MemberName, StringComparison.InvariantCultureIgnoreCase));
if (fieldInfo == null || !fieldInfo.IsStatic)
{
return(null);
}
return(() => fieldInfo.GetValue(null));
}
private static Func <object> GetFromProperty(MemberDataAttribute memberDataAttribute, Type type)
{
var propInfo = GetMemberInfoByName(type, t => t.GetRuntimeProperties(),
p => p.Name.Equals(memberDataAttribute.MemberName, StringComparison.InvariantCultureIgnoreCase));
if (propInfo?.GetMethod == null || !propInfo.GetMethod.IsStatic)
{
return(null);
}
return(() => propInfo.GetValue(null, null));
}
private static IEnumerable <object[]> GetSingleAttributeData(MethodInfo methodInfo, MemberDataAttribute attribute)
{
var targetType = attribute.Type ?? methodInfo.DeclaringType;
if (targetType == null)
{
throw new ArgumentException($"No type found for MemberDataAttribute on method {methodInfo.Name} with attribute value {attribute.MemberName}.");
}
var memberDataAccessor = GetFromProperty(attribute, targetType)
?? GetFromField(attribute, targetType)
?? GetFromMethod(attribute, targetType);
if (memberDataAccessor == null)
{
throw new ArgumentException($"Cannot locate a field, property or parameterless method with name {attribute.MemberName} on type {targetType.Name}. Did you forget to make it static?");
}
var data = memberDataAccessor() as IEnumerable <object[]>;
if (data == null)
{
throw new ArgumentException($"The member data was not of a type convertible to IEnumerable<object[]> for member name {attribute.MemberName} on type {targetType.Name}.");
}
return(data);
}
/// <summary>
/// Used by Fixie to provide test data to the engine.
/// </summary>
/// <param name="method">The test method currently running.</param>
/// <returns>The data to provide to the test method.</returns>
public IEnumerable <object[]> GetParameters(MethodInfo method)
{
return(MemberDataAttribute.GetData(method));
}