public void EndEdit_ValidSelectedRequestForQuoteWithNegativeIdentifier_CallsSaveRequest()
        {
            // Arrange
            var wasCalled = false;

            viewModel.SelectedRequestForQuote = new RequestForQuoteImpl()
            {
                Identifier = -1
            };
            optionRequestPersistanceManagerMock.Setup(orpm => orpm.SaveRequest(It.IsAny <IRequestForQuote>())).Callback(() => wasCalled = true);
            // Act
            viewModel.EndEdit();
            // Assert
            Assert.IsTrue(wasCalled, "because SaveRequest was called by EndEdit");
        }