private async Task TipTransferrableShouldSendMessageToSenderWhenRecipientHasZeroNxt(NxtTransferable transferable) { const decimal tipAmount = 42; var expectedMessage = MessageConstants.RecipientDoesNotHaveAnyNxtHint(TestConstants.RecipientAccount.SlackId, transferable.Name); slackConnectorMock.Setup(c => c.GetInstantMessageId(It.Is <string>(id => id == TestConstants.SenderAccount.SlackId))).ReturnsAsync(imSession.Id); await SetupSuccessfulTipTransferable(transferable, transferable.Name, tipAmount); slackConnectorMock.Verify(c => c.SendMessage(imSession.Id, expectedMessage, true)); }