public async Task SignOutTraineeAsyncShouldSaveCorrectDataWithValidProgramIdAndTraineeId()
        {
            // Arrange
            var db             = this.GetDatabase();
            var programService = new ProgramService(db);

            const int    programId = 1;
            const string traineeId = "TestTrainee";

            var program = new Program
            {
                Id        = programId,
                StartDate = DateTime.MaxValue,
                Clients   = new List <TraineeProgram>()
            };

            db.Add(program);
            await db.SaveChangesAsync();

            // Act
            var result = await programService.SignUpUserAsync(programId, traineeId);

            var signOut = await programService.SignOutUserAsync(programId, traineeId);

            // Assert
            result
            .Should()
            .Be(true);

            signOut
            .Should()
            .Be(true);
        }