public void LazyLoaded_Implicit_Conversion_When_Not_IsLoad_Should_Call_DB_Once()
{
// Arrange
StubResultSet rsOffices = new StubResultSet("Number");
rsOffices.AddRow(1);
rsOffices.AddRow(2);
var db = CreateDB_ForQuery(rsOffices);
Building building = new Building();
int calls = 0;
var lazyProxy = new LazyLoaded<Building, List<Office>>((d, b) => {
calls++;
return d.Query<Office>().ToList();
}, RelationshipTypes.Many);
lazyProxy.Prepare(() => db, building, "Offices");
building._offices = lazyProxy;
// Act
int count = building.Offices.Count;
// Assert
Assert.AreEqual(2, count);
Assert.AreEqual(1, calls);
// Act again (should not hit db)
count = building.Offices.Count;
// Assert
Assert.AreEqual(2, count);
Assert.AreEqual(1, calls);
}
public void LazyLoaded_Implicit_Conversion_When_IsLoad_Should_Return_Value()
{
Building building = new Building();
Office office1 = new Office { Number = 1 };
Office office2 = new Office { Number = 2 };
building._offices = new LazyLoaded<Building, List<Office>>(new List<Office> { office1, office2 });
int count = building.Offices.Count;
Assert.IsTrue(count == 2);
}
public void LazyLoadedException_ShouldThrowDataMappingException()
{
// Arrange
StubResultSet rsOffices = new StubResultSet("Number");
rsOffices.AddRow(1);
rsOffices.AddRow(2);
var db = CreateDB_ForQuery(rsOffices);
Building building = new Building();
var lazyProxy = new LazyLoaded<Building, List<Office>>((d, b) =>
{
throw new Exception("Oops!");
//return d.Query<Office>().ToList();
}, RelationshipTypes.Many);
lazyProxy.Prepare(() => db, building, "Offices");
building._offices = lazyProxy;
// Act
int count = building.Offices.Count;
}