public void Clear_MultipleDataSets_ShouldDisposeAndClearAllInternalContexts(
Mock<BaseDataSet<int>> dataSet1,
Mock<BaseDataSet<string>> dataSet2,
FakeDataContext context)
{
// Arrange
context.SetUpDataSet(dataSet1.Object);
context.Set<int>();
context.SetUpDataSet(dataSet2.Object);
context.Set<string>();
var internalContext = (IDictionary<string, IBaseDataSet>)typeof(BaseDataContext).GetField("_internalContext", BindingFlags.NonPublic | BindingFlags.Instance)?.GetValue(context);
if (internalContext == null) throw new Exception("Cannot get the value of _internalContext.");
internalContext.Count.Should().Be(2);
// Act
context.Clear();
// Assert
internalContext.Count.Should().Be(0);
dataSet1.Verify(s => s.Dispose(), Times.Once);
dataSet2.Verify(s => s.Dispose(), Times.Once);
}