private void RunOrderByTestAndVerify(IEnumerable <Product> products, string orderBy, int[] expectedOrderedId, params string[] expectedExprs)
{
// Act - Bind string to Linq.Expression
OrderByBinderResult binderResult = BindOrderBy <Product>(orderBy, _model);
// Assert
Assert.NotNull(binderResult);
bool alreadyOrdered = false;
IList <string> exprs = new List <string>();
OrderByBinderResult result = binderResult;
IEnumerable <Product> collections = products;
IOrderedEnumerable <Product> orderedProducts;
do
{
exprs.Add(ExpressionStringBuilder.ToString(result.OrderByExpression));
// Act - Invoke Orderby
orderedProducts = InvokeOrderBy(collections, result.OrderByExpression, result.Direction, alreadyOrdered);
alreadyOrdered = true;
result = result.ThenBy;
collections = orderedProducts;
}while (result != null);
// Assert
Assert.True(expectedExprs.SequenceEqual(exprs));
Assert.True(expectedOrderedId.SequenceEqual(orderedProducts.Select(a => a.ProductID))); // ordered id
}
public void OrderByBinder_BindsComputedPropertyInDollarOrderBy_FromDollarCompute()
{
// Arrange
QueryClause clause = CreateQueryClause("$orderby=Total&$compute=Price mul Qty as Total", _model, typeof(ComputeCustomer));
ODataQuerySettings querySettings = new ODataQuerySettings();
IOrderByBinder binder = new OrderByBinder();
QueryBinderContext context = new QueryBinderContext(_model, querySettings, typeof(ComputeCustomer));
if (clause.Compute != null)
{
context.AddComputedProperties(clause.Compute.ComputedItems);
}
// Act
OrderByBinderResult orderByResult = binder.BindOrderBy(clause.OrderBy, context);
// Assert
Assert.Null(orderByResult.ThenBy);
Assert.Equal(OrderByDirection.Ascending, orderByResult.Direction);
string resultExpression = ExpressionStringBuilder.ToString(orderByResult.OrderByExpression);
Assert.Equal("$it => ($it.Price * Convert($it.Qty))", resultExpression);
IEnumerable <ComputeCustomer> customers = new[]
{
new ComputeCustomer {
Id = 1, Qty = 3, Price = 5.99
},
new ComputeCustomer {
Id = 2, Qty = 5, Price = 2.99
},
new ComputeCustomer {
Id = 3, Qty = 2, Price = 18.01
},
new ComputeCustomer {
Id = 4, Qty = 4, Price = 9.99
},
};
var orderedResult = OrderByBinderTests.InvokeOrderBy(customers, orderByResult.OrderByExpression, orderByResult.Direction, false);
Assert.True(new [] { 2, 1, 3, 4 }.SequenceEqual(orderedResult.Select(a => a.Id))); // ordered id
}
