public async Task VerifyMetricForLowHealth(Metrics type, bool shouldSucceed)
{
// Arrange
var metric = new Metric
{
Type = type.AsInt(),
Source = "the-source"
};
var discrepancyService = new DiscrepancyService(
new Mock <ILogger <DiscrepancyService> >().Object,
new Mock <IDataContext>().Object,
new Mock <INotificationService>().Object,
new Mock <IConfiguration>().Object
);
// Act
if (shouldSucceed)
{
// It will pass metric check, will try to interact with data layer and fail
await Assert.ThrowsAsync <NullReferenceException>(
async() => await discrepancyService.FindLowHealthsAsync(metric, new TimeSpan())
);
}
else
{
await Assert.ThrowsAsync <ArgumentException>(
async() => await discrepancyService.FindLowHealthsAsync(metric, new TimeSpan())
);
}
}
public async Task FindsLowHealth()
{
// Arrange
var mockConfig = new Mock <IConfiguration>();
mockConfig
.SetupGet(conf => conf["ServiceManager:DiscrepancyService:Health:Threshold"])
.Returns(99.ToString());
mockConfig
.SetupGet(conf => conf["ServiceManager:DiscrepancyService:LoHealthad:MaxFailures"])
.Returns(1.ToString()); // 3 is discrepancy
var context = _serviceProvider.GetRequiredService <IDataContext>();
var metric = await context.Metrics.AddAsync(
new Metric
{
Source = "the-source",
Type = Metrics.Health.AsInt()
}
);
var dataPoints = new List <HealthReport>()
{
new HealthReport { // good
Data = new List <HealthReportDataPoint> {
new HealthReportDataPoint {
Label = AutoLabels.Normal.ToString()
},
new HealthReportDataPoint {
Label = AutoLabels.Normal.ToString()
},
},
Timestamp = DateTime.UtcNow,
Metric = metric.Entity
},
new HealthReport {
Data = new List <HealthReportDataPoint> { // bad
new HealthReportDataPoint {
Label = AutoLabels.Normal.ToString()
},
new HealthReportDataPoint {
Label = AutoLabels.Critical.ToString()
},
},
Timestamp = DateTime.UtcNow.AddMinutes(-1),
Metric = metric.Entity
},
new HealthReport {
Data = new List <HealthReportDataPoint> { // bad
new HealthReportDataPoint {
Label = AutoLabels.Normal.ToString()
},
new HealthReportDataPoint {
Label = AutoLabels.Warning.ToString()
},
},
Timestamp = DateTime.UtcNow.AddMinutes(-2),
Metric = metric.Entity
},
new HealthReport { // good
Data = new List <HealthReportDataPoint> {
new HealthReportDataPoint {
Label = AutoLabels.Normal.ToString()
},
new HealthReportDataPoint {
Label = AutoLabels.Normal.ToString()
},
},
Timestamp = DateTime.UtcNow.AddMinutes(-3),
Metric = metric.Entity
}
};
await context.HealthReports.AddRangeAsync(dataPoints);
await context.SaveChangesAsync();
var discrepancyService = new DiscrepancyService(
new Mock <ILogger <DiscrepancyService> >().Object,
context,
new Mock <INotificationService>().Object,
mockConfig.Object
);
var expected = new List <Discrepancy> {
new Discrepancy
{
DateFirstOffense = dataPoints[2].Timestamp,
Type = DiscrepancyType.LowHealth,
MetricType = Metrics.Health,
MetricSource = "the-source"
}
};
// Act
var actual = await discrepancyService
.FindLowHealthsAsync(
metric.Entity,
new TimeSpan(0, 30, 0)
);
// Assert
Assert.Equal(expected, actual);
}