//Checks if dataStorage is empty ReadPatientVitalsign should return null
        public void Given_PatientId_When_ReadPatientVitalSigns_Invoke_Then_Null_Asserted()
        {
            PatientVitalSignReader reader = new PatientVitalSignReader();
            string ActualValue            = reader.ReadPatientVitalSigns("Patient_124");
            string ExpectedValue          = "";

            Assert.AreEqual(ActualValue, ExpectedValue);
        }
        public void Given_PatientId_Along_With_Json_Data_When_Invoke_StorePatientVitalSignsInDB_Valid_Json_Stores_In_Queue()
        {
            PatientVitalSignWriterLib.PatientVitalSignWriter m_writer = new PatientVitalSignWriterLib.PatientVitalSignWriter();
            string m_expected = "{patient id: Patient_123, SPO2: 99, Temp: 98, PulseRate: 94}";

            m_writer.StorePatientVitalSigns("Patient_123", m_expected);

            PatientVitalSignReader reader = new PatientVitalSignReader();
            string ActualValue            = reader.ReadPatientVitalSigns("Patient_123");

            Assert.AreEqual(ActualValue, m_expected);
        }
        public void Given_PatientId_When_ReadPatientVitalSigns_Invoke_Then_Valid_Result_Asserted()
        {
            PatientVitalSignWriter writer = new PatientVitalSignWriter();
            string Expected = "{patient id: Patient_123, SPO2: 99, Temp: 98, PulseRate: 94}";

            writer.StorePatientVitalSigns("Patient_123", Expected);

            PatientVitalSignReader reader = new PatientVitalSignReader();
            string ActualValue            = reader.ReadPatientVitalSigns("Patient_123");

            Assert.AreEqual(ActualValue, Expected);
        }
        public void Given_Valid_Arguments_When_StorePatientVitalSigns_Invoke_Then_Valid_Result_Asserted()
        {
            PatientVitalSignWriter m_writer = new PatientVitalSignWriter();
            string m_expectedValue          = "{patient id: Patient_123, SPO2: 99, Temp: 98, PulseRate: 94}";

            m_writer.StorePatientVitalSigns("Patient_123", m_expectedValue);

            PatientVitalSignReader m_reader = new PatientVitalSignReader();
            string m_actualValue            = m_reader.ReadPatientVitalSigns("Patient_123");

            Assert.AreEqual(m_actualValue, m_expectedValue);
        }