public void GetExpressionValue_MemberExpression_Field()
{
TestDataObject obj = new TestDataObjectImpl()
{
TestField = "Hello World"
};
Expression e = Expression.PropertyOrField(Expression.Constant(obj), "TestField");
Assert.That(e.GetExpressionValue <string>(), Is.EqualTo("Hello World"));
}
public void Visit()
{
System.Linq.Expressions.Expression <Func <int, int, bool> > largeSumTestExpression = (num1, num2) => (num1 + num2) > 1000;
Func <int, int, bool> largeSumTest = largeSumTestExpression.Compile();
TestDataObject obj = new TestDataObjectImpl()
{
StringProperty = "test", TestField = "test2"
};
TestObj obj2 = new TestObj()
{
TestField = "Test2"
};
TestQuery <TestDataObject> ctx = new TestQuery <TestDataObject>();
var list = from o in ctx
where o.IntProperty == 1 &&
o.IntProperty != 2 &&
o.IntProperty > 3 &&
o.IntProperty == obj.ID &&
o.StringProperty == obj2.TestField &&
o.StringProperty == obj.StringProperty &&
o.StringProperty.StartsWith(obj2.TestField) &&
(o.StringProperty.StartsWith("test") || o.StringProperty == "test") &&
(o.StringProperty is string) &&
!o.BoolProperty &&
o.BoolProperty ? false : true &&
o.StringProperty == new DateTime().ToShortDateString() &&
new int[] { 1, obj.IntProperty }.Length == 2 &&
(obj.IntProperty + o.StringProperty.Length) == 4 &&
largeSumTest(o.IntProperty, o.IntProperty)
select new
{
o.IntProperty,
o.BoolProperty,
Test = o.IntProperty * 2,
Test2 = MethodCallTest(o.StringProperty.Length * 2),
TestList = new int[] { o.IntProperty, o.ID, o.StringProperty.Length },
TestObj = new { o.BoolProperty, o.ID },
Date = new DateTime(1000),
Test3 = obj.StringProperty,
Test4 = new TestDataObjectImpl()
{
StringProperty = o.StringProperty, ID = MethodCallTest(o.IntProperty)
},
Test5 = new List <TestDataObject> {
new TestDataObjectImpl()
{
StringProperty = obj.StringProperty, ID = o.IntProperty
},
new TestDataObjectImpl()
{
StringProperty = o.StringProperty, ID = MethodCallTest(o.IntProperty)
}
},
Test6 = MethodCallTest(2),
Test7 = new List <TestDataObject>()
{
new TestDataObjectImpl(), obj
}.Max(x => x.ID),
};
// The TestProvider does not implement Projections
// But in that case we just whant to test the visitor
var result = list.GetEnumerator();
Assert.That(result, Is.Null);
}
