public void Resolve_OK_ReturnsSnhForId1()
        {
            //  Arrange
            var resolver = new ImportServiceResolver(_mockSnhImportService.Object, _mockRenUkImportService.Object);

            //  Act
            var result = resolver.Resolve(1);

            //  Assert
            Assert.AreSame(_mockSnhImportService.Object, result, "Expected the Snh instance to be returned");
        }
        public void Resolve_Not_OK_ReturnsNullForId3()
        {
            //  Arrange
            var resolver = new ImportServiceResolver(_mockSnhImportService.Object, _mockRenUkImportService.Object);

            //  Act
            var result = resolver.Resolve(3);

            //  Assert
            Assert.IsNull(result, "Expected a NULL instance to be returned, Id 3 does not exists as a valid datasource");
        }