public async Task PublishReadingAsync(string reading)
{
if (reading is null)
{
throw new ArgumentNullException(nameof(reading));
}
GeigerValues geigerValue;
try
{
geigerValue = GeigerValuesConverter.ConvertFromReading(reading);
_geigerValues.Add(geigerValue);
}
catch (FormatException e)
{
Console.WriteLine($"Cannot convert reading: { e }");
return;
}
if (_lastPublish.AddSeconds(PublishIntervall) <= DateTime.Now)
{
_lastPublish = DateTime.Now;
var json = GeigerValuesConverter.ConvertToJson(_lastPublish, _geigerValues.Select(x => x.Radiation));
var message = new MqttApplicationMessageBuilder()
.WithTopic(MqttTopic)
.WithPayload(json)
.WithRetainFlag(true)
.Build();
await _client.PublishAsync(message);
_geigerValues.Clear();
}
}
public void ConvertWithInvalidMode()
{
var reading = "CPS, invalid, CPM, 42, uSv/hr, 0.03, FOO";
// Test & Verification
Assert.That(() => { GeigerValuesConverter.ConvertFromReading(reading); }, Throws.TypeOf <FormatException>());
}
public void ConvertWithValidString2()
{
var reading = "CPS, 42, CPM, 4242, uSv/hr, 100.03, FAST";
// Test
var result = GeigerValuesConverter.ConvertFromReading(reading);
// Verification
Assert.That(result, Is.Not.Null);
Assert.That(result.CPS, Is.EqualTo(42));
Assert.That(result.CPM, Is.EqualTo(4242));
Assert.That(result.Radiation, Is.EqualTo(100.03));
Assert.That(result.Mode, Is.EqualTo(ModeEnum.FAST));
}
public void ConvertJSONValid()
{
var value = new GeigerValues
{
CPS = 2,
CPM = 42,
Radiation = 0.03,
Mode = ModeEnum.SLOW
};
var expected = "{\"CPS\":2,\"CPM\":42,\"Radiation\":0.03,\"Mode\":\"SLOW\"}";
// Test
var result = GeigerValuesConverter.ConvertToJson(value);
// Verification
Assert.That(result, Is.Not.Null);
Assert.That(result, Is.EqualTo(expected));
}
public void ConvertJSONMessage()
{
CultureInfo culture = new CultureInfo("en-US");
var now = DateTime.Now;
var timeSpan = now.ToUniversalTime() - new DateTime(1970, 1, 1, 0, 0, 0, DateTimeKind.Utc);
var timestamp = (long)timeSpan.TotalMilliseconds;
var values = new List <double>();
for (int i = 0; i < 10; i++)
{
values.Add(i);
}
var average = values.Average();
var expected = $"{{\"ts\":{timestamp},\"val\":{average.ToString(culture)}}}";
// Test
var result = GeigerValuesConverter.ConvertToJson(now, values);
// Verification
Assert.That(result, Is.Not.Null);
Assert.That(result, Is.EqualTo(expected));
}
