public void ThrowArgumentNullException_WhenParameterIsNull()
{
//arrange
string nullSensorIdICB = null;
Mock <HttpClient> mockHtteClient = new Mock <HttpClient>();
SensorApiService sensorApiService = new SensorApiService(mockHtteClient.Object);
MeasurementReadIn measurementReadIn = new MeasurementReadIn();
//act and assert
Assert.ThrowsExceptionAsync <ArgumentNullException>(async() => measurementReadIn = await sensorApiService.GetCurrentSensorValueFromAPI(nullSensorIdICB));
}
public void ReturnInstance_WhenParameterIsCorrect()
{
// Arrange
Mock <HttpClient> mockHttpClient = new Mock <HttpClient>();
// Act
SensorApiService instance = new SensorApiService(mockHttpClient.Object);
// Assert
Assert.IsNotNull(instance);
}
public void ReturnInstanceOfSensor_WhenInvoked()
{
// Arrange - - - - - - - - - - -
string sensorIdICB = "Test sensorIdICB";
//Generate mock JSON
MeasurementReadIn expected = new MeasurementReadIn
{
TimeStamp = "Test TimeStamp",
Value = "Test Value",
ValueType = "Test ValueType"
};
MemoryStream ms = new MemoryStream();
DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(MeasurementReadIn));
ser.WriteObject(ms, expected);
byte[] json = ms.ToArray();
ms.Close();
string expectedJSON = Encoding.UTF8.GetString(json, 0, json.Length); //mock JSON done
//Generate mock HttpClient
MockHttpMessageHandler mockHttp = new MockHttpMessageHandler();
string url = string.Format("http://telerikacademy.icb.bg/api/sensor/{0}", sensorIdICB);
mockHttp.When(url).Respond("application/json", expectedJSON);
HttpClient httpClient = new HttpClient(mockHttp);
//injected mock HttpClient
ISensorApiService sensorApiService = new SensorApiService(httpClient);
// Act - - - - - - - - - - -
MeasurementReadIn actual = sensorApiService.GetCurrentSensorValueFromAPI(sensorIdICB).Result;
// Assert - - - - - - - - - - -
Assert.AreEqual(expected.TimeStamp, actual.TimeStamp);
Assert.AreEqual(expected.Value, actual.Value);
Assert.AreEqual(expected.ValueType, actual.ValueType);
}
public async Task ReturnCollectionOfSensorTypes_WhenInvoked()
{
// Arrange - - - - - - - - - - -
//Generate mock JSON
SensorReadInData mockSensor1 = new SensorReadInData
{
Description = "Test Description",
MeasureType = "Test MeasureType",
MinPollingIntervalInSeconds = 7,
SensorId = "Test SensorId",
Tag = "Test Tag"
};
SensorReadInData mockSensor2 = new SensorReadInData
{
Description = "Description",
MeasureType = "MeasureType",
MinPollingIntervalInSeconds = 77,
SensorId = "SensorId",
Tag = "Tag"
};
IEnumerable <SensorReadInData> sensors = new List <SensorReadInData>()
{
mockSensor1, mockSensor2
};
MemoryStream ms = new MemoryStream();
DataContractJsonSerializer ser = new DataContractJsonSerializer(typeof(IEnumerable <SensorReadInData>));
ser.WriteObject(ms, sensors);
byte[] json = ms.ToArray();
ms.Close();
string expectedJSON = Encoding.UTF8.GetString(json, 0, json.Length); //mock JSON done
//Generate mock HttpClient
MockHttpMessageHandler mockHttp = new MockHttpMessageHandler();
string url = "http://telerikacademy.icb.bg/api/sensor/all";
mockHttp.When(url).Respond("application/json", expectedJSON);
HttpClient httpClient = new HttpClient(mockHttp);
//injected mock HttpClient
ISensorApiService sensorApiService = new SensorApiService(httpClient);
List <string> expectedResult = new List <string>();
expectedResult.Add(mockSensor1.SensorId);
expectedResult.Add(mockSensor2.SensorId);
// Act - - - - - - - - - - -
IDictionary <string, SensorReadInData> actualSensors = await sensorApiService.ListSensorsFromAPI();
List <string> actualResult = actualSensors.Keys.ToList();
// Assert - - - - - - - - - - -
Assert.IsNotNull(actualSensors);
Assert.AreEqual(expectedResult.Count, actualResult.Count);
CollectionAssert.AreEquivalent(expectedResult, actualResult);
for (int i = 0; i <= expectedResult.Count - 1; i++)
{
Assert.AreEqual(expectedResult[i], actualResult[i]);
}
}
