public void ContainerHoldsAttribute()
{
// Arrange:
// This simple class has a name and a value (implements IAttribute)
TestAttr targetAttr = new TestAttr()
{
Name = "A1", Value = "33"
};
/// Act:
/// We build a lambda expression that has the ability to verify that the given IAttribute
/// (TestAttr in this case), can be found in a linq container (e.g. an IList) that will be
/// passed when evaluating the lambda.
var containerHolds_A1_33 = ContainerMemberLambdaFactory.BuildContainerHoldsAttributeLambda <TestAttr>(targetAttr);
/// Assert:
/// Only one of the two TestObjects in TestData has the TestAttr with Name = A1 and Value = 33.
/// We run our lambda on both those objects and assert there is indeed only one.
int hits = 0;
foreach (var t in TestData)
{
Console.WriteLine("To emulate: " + t.Attributes.Any(a => a.Name == targetAttr.Name && a.Value == targetAttr.Value));
var result = containerHolds_A1_33(t.Attributes);
Console.WriteLine("Result from expression: " + result);
if (result)
{
hits++;
}
}
Assert.AreEqual(1, hits);
}
public void ContainerMemberHoldsAttribute()
{
/// Arrange
/// This simple class has a name and a value (implements IAttribute)
TestAttr targetAttr = new TestAttr()
{
Name = "A1", Value = "33"
};
Console.WriteLine("To emulate: " + TestData.Where(td => td.Attributes.Any(a => a.Name == targetAttr.Name && a.Value == targetAttr.Value)));
/// Act:
/// We build a lambda expression that has the ability to verify that the objects that will be given to it
/// have an attribute that is a container and holds the given targetAttr.
var EntityHasAttribute_A1_33 = ContainerMemberLambdaFactory.BuildContainerMemberHoldsAttributeLambda <TestObject>("Attributes", targetAttr);
var result = TestData.Where(e => EntityHasAttribute_A1_33(e));
Console.WriteLine("Found object with targetAttr? " + result.Any());
// Assert we found only one such TestObject.
Assert.IsTrue(result.Count() == 1);
}