public void CanTranslateThenFetchClause()
{
var session = new Mock <ISession>();
var executor = new SpecificationExecutor();
var specification = new WithThenFetch();
var queryable = executor.ExecuteSpecification(session.Object, specification);
var thenFetchMethodInfo = ReflectionHelper.FindMethod(
BindingFlags.Static | BindingFlags.Public,
typeof(EagerFetchingExtensionMethods),
nameof(EagerFetchingExtensionMethods.ThenFetch),
null,
new ArgumentConstraint(typeof(INhFetchRequest <,>), 1),
new ArgumentConstraint(typeof(Expression <>).MakeGenericType(typeof(Func <,>)), 2));
var lambda = (MethodCallExpression)queryable.Expression;
Assert.Equal(ExpressionType.Call, lambda.NodeType);
Assert.Same(
thenFetchMethodInfo.MakeGenericMethod(typeof(User), typeof(Order), typeof(Address)),
lambda.Method);
Assert.Same(
specification.Expression,
((UnaryExpression)lambda.Arguments.ElementAt(1)).Operand);
}
public void CanTranslateThenFetchClause()
{
var context = new Mock <Context>();
context
.Setup(x => x.Set <User>())
.Returns(new FakeSet <User>());
var executor = new SpecificationExecutor();
var specification = new WithThenFetch();
var queryable = executor.ExecuteSpecification(context.Object, specification);
var thenFetchMethodInfo = typeof(EntityFrameworkQueryableExtensions)
.GetMethods(BindingFlags.Public | BindingFlags.Static)
.Where(x => x.Name == nameof(EntityFrameworkQueryableExtensions.ThenInclude))
.First(x =>
{
var arguments = x.GetParameters();
var includableQuerySecondArguments = arguments.First().ParameterType.GetGenericArguments().ElementAt(1);
return(!includableQuerySecondArguments.IsGenericType || !(typeof(IEnumerable <>).IsAssignableFrom(includableQuerySecondArguments.GetGenericTypeDefinition())));
});
var lambda = (MethodCallExpression)queryable.Expression;
Assert.Equal(ExpressionType.Call, lambda.NodeType);
Assert.Same(
thenFetchMethodInfo.MakeGenericMethod(typeof(User), typeof(Person), typeof(byte[])),
lambda.Method);
Assert.Same(
specification.Expression.Body,
((LambdaExpression)((UnaryExpression)lambda.Arguments.ElementAt(1)).Operand).Body);
}
