public async Task GetProjectName_UnKnownInvitationId_ShouldReturnNull() { using (var context = new IPOContext(_dbContextOptions, _plantProvider, _eventDispatcher, _currentUserProvider)) { // Arrange var dut = new InvitationHelper(context); // Act var projectName = await dut.GetProjectNameAsync(0); // Assert Assert.IsNull(projectName); } }