private void CallStepsWithActualParams(ParamDictionaryBase <object> paramDefinitions, params object[] parameters)
{
propertyBasedTestContext.ActualParams = new ActualParamDictionary(
paramDefinitions.KeyValuePairs.Select((pd, i) => new KeyValuePair <string, object>(pd.Key, parameters[i])));
foreach (var action in propertyBasedTestContext.StepsToReplay)
{
action(GetCurrentExecutionEngine());
}
}
private Property CreateProperty(ParamDictionaryBase <object> paramDefinitions)
{
if (paramDefinitions.Count > 3)
{
throw new NotSupportedException("Maximum 3 property parameter is allowed!");
}
if (paramDefinitions.Count == 0)
{
throw new NotSupportedException("At least one input parameter is necessary for property based tesing!");
}
var paramDefinitionsList = paramDefinitions.ToArray();
var paramTypes = paramDefinitionsList.Select(pd => pd.GetType().GetGenericArguments()[0]).ToArray();
var paramExpressions = paramTypes.Select(Expression.Parameter).ToArray();
var genericActionTypes = new[] { typeof(Action), typeof(Action <>), typeof(Action <,>), typeof(Action <, ,>) };
var actionType = genericActionTypes[paramDefinitions.Count].MakeGenericType(paramTypes);
var methodToInvoke = GetType().GetMethod(nameof(CallStepsWithActualParams), BindingFlags.Instance | BindingFlags.NonPublic, null, new [] { typeof(ParamDictionaryBase <object>), typeof(object[]) }, null);
var expressionLambdaMethod = FindExpressionLambdaMethod(actionType);
var callStepsWithActualParamsCall = Expression.Call(Expression.Constant(this), methodToInvoke,
Expression.Constant(paramDefinitions),
Expression.NewArrayInit(typeof(object), paramExpressions.Select(pe => Expression.Convert(pe, typeof(object)))));
var actionExpression = expressionLambdaMethod.Invoke(null, new object[] { callStepsWithActualParamsCall, paramExpressions });
var actionCompileMethod = actionExpression.GetType().GetMethod(nameof(Expression <Action> .Compile), new Type[0]);
var action = actionCompileMethod.Invoke(actionExpression, null);
var propForAllMetod = FindForAllMethod(actionType, paramTypes);
return((Property)propForAllMetod.Invoke(null,
paramDefinitionsList.Concat(new [] { action }).ToArray()));
}