public void ComplexTest_With_Substring()
{
var oDataVisitor = new ODataVisitor();
string model = "X";
Expression<Func<IQueryable<Car>, IEnumerable<Car>>> expression = (IQueryable<Car> data) =>
data.Where(x => x.Model.Substring(0,1) == model);
var result = oDataVisitor.Translate(expression);
Console.WriteLine(result);
Assert.AreEqual("$filter=(substring(Model,0,1) eq 'X')", result);
}
public void TopTest()
{
var oDataVisitor = new ODataVisitor();
int count = 50;
Expression<Func<IQueryable<Car>, IEnumerable<Car>>> expression = (IQueryable<Car> data) =>
data.Take(50);
var result = oDataVisitor.Translate(expression);
Console.WriteLine(result);
Assert.AreEqual("$top=50", result);
}
public void FilterTest_ORELSE()
{
var oDataVisitor = new ODataVisitor();
string name1 = "ali";
Expression<Func<IQueryable<Car>, IEnumerable<Car>>> expression = (IQueryable<Car> data) =>
data.Where(x => x.Make == "Fiat" || x.MaxSpeed == 130);
var result = oDataVisitor.Translate(expression);
Console.WriteLine(result);
Assert.AreEqual("$filter=((Make eq 'Fiat') OR (MaxSpeed eq 130))", result);
}
public void ComplexTest()
{
var oDataVisitor = new ODataVisitor();
int count = 50;
int skip = 20;
string model = "X3";
Expression<Func<IQueryable<Car>, IEnumerable<Car>>> expression = (IQueryable<Car> data) =>
data.Where(x=>x.Model == model).Skip(skip).Take(count);
var result = oDataVisitor.Translate(expression);
Console.WriteLine(result);
Assert.AreEqual("$filter=(Model eq 'X3')&$skip=20&$top=50", result);
}
public void ComplexTest_withOrdering_desc()
{
var oDataVisitor = new ODataVisitor();
int count = 50;
int skip = 20;
string model = "X3";
Expression<Func<IQueryable<Car>, IEnumerable<Car>>> expression = (IQueryable<Car> data) =>
data.Where(x => x.Model == model)
.Skip(skip)
.OrderByDescending(x => x.Price);
var result = oDataVisitor.Translate(expression);
Console.WriteLine(result);
Assert.AreEqual("$filter=(Model eq 'X3')&$skip=20&$orderby=Price DESC", result);
}
protected override string GetQueryString(Expression expression)
{
var odataVisitor = new ODataVisitor();
return odataVisitor.Translate(expression);
}
