public void start_timer_runs_the_code_in_the_using_block_plus_logs_a_timer_metric()
{
var logs = new List <string>();
var contextMock = new Mock <ILambdaLogger>(MockBehavior.Strict);
contextMock.Setup(logger => logger.LogLine(It.IsAny <string>()))
.Callback((string s) => logs.Add(s));
int counter = 0;
var metrics = new DogMetrics(contextMock.Object);
using (metrics.StartTimer("mystat"))
{
counter++;
Thread.Sleep(3000);
}
Assert.True(counter == 1,
"Expected the code in the using block to be executed, but it wasn\'t");
Assert.True(logs.Count == 1);
Assert.True(logs.First().Contains("|histogram|"),
$@"Expected the stat type: ""|histogram|"" but couldn't find it in <{logs.First()}>");
Assert.True(logs.First().Contains("|mystat|"),
$@"Expected the stat name: ""|mystat|"" but couldn't find it in <{logs.First()}>");
Assert.InRange(GetTimeFromLog(logs.First()), 3000, 3005);
}
public async Task RaiseMetricShouldBeSuccessful()
{
IMetricDestination target = new DogMetrics(_testApiKey);
HoundMetricCollection data = GetTestMetrics();
HoundResult eventResponse = await target.RaiseMetric(data);
eventResponse.IsSuccess.ShouldBeTrue();
}
public void if_the_given_func_throws_an_exception_then_so_does_time()
{
var metrics = new DogMetrics(Mock.Of <ILambdaLogger>());
Assert.Throws <Exception>(() =>
{
metrics.Time <string>(() => throw new Exception("pow!"), "mystat");
});
}
public void it_contains_the_stat_name()
{
var logs = new List <string>();
var contextMock = new Mock <ILambdaLogger>(MockBehavior.Strict);
contextMock.Setup(logger => logger.LogLine(It.IsAny <string>()))
.Callback((string s) => logs.Add(s));
var metrics = new DogMetrics(contextMock.Object);
metrics.Gauge("mystat", 1);
Assert.True(logs.Count == 1);
Assert.True(logs.First().Contains("|mystat|"),
$@"Expected the given stat name: ""|mystat|"" but couldn't find it in <{logs.First()}>");
}
public void it_contains_the_monitoring_command_string()
{
var logs = new List <string>();
var contextMock = new Mock <ILambdaLogger>(MockBehavior.Strict);
contextMock.Setup(logger => logger.LogLine(It.IsAny <string>()))
.Callback((string s) => logs.Add(s));
var metrics = new DogMetrics(contextMock.Object);
metrics.Counter("mystat", 1);
Assert.True(logs.Count == 1);
Assert.True(logs.First().Contains("MONITORING"),
$@"Expected the command string: ""MONITORING"" but couldn't find it in <{logs.First()}>");
}
public void it_contains_the_given_value(ServiceCheck checkValue, int expectedValue)
{
var logs = new List <string>();
var contextMock = new Mock <ILambdaLogger>(MockBehavior.Strict);
contextMock.Setup(logger => logger.LogLine(It.IsAny <string>()))
.Callback((string s) => logs.Add(s));
var metrics = new DogMetrics(contextMock.Object);
metrics.Check("mystat", checkValue);
Assert.True(logs.Count == 1);
Assert.True(logs.First().Contains($"|{expectedValue}|"),
$@"Expected the given stat value: ""|{expectedValue}|"" but couldn't find it in <{logs.First()}>");
}
public void sample_rate_of_1_always_sends_it()
{
var logs = new List <string>();
var contextMock = new Mock <ILambdaLogger>(MockBehavior.Strict);
contextMock.Setup(logger => logger.LogLine(It.IsAny <string>()))
.Callback((string s) => logs.Add(s));
Repeat(100, () =>
{
var metrics = new DogMetrics(contextMock.Object);
metrics.Gauge("mystat", 1, 1D); //don't usually need to specify 1D
});
Assert.True(logs.Count == 100,
$"Expected all lines to come through but only had {logs.Count}");
}
public void sample_rate_of_0_never_sends_it()
{
var logs = new List <string>();
var contextMock = new Mock <ILambdaLogger>(MockBehavior.Strict);
contextMock.Setup(logger => logger.LogLine(It.IsAny <string>()))
.Callback((string s) => logs.Add(s));
Repeat(100, () =>
{
var metrics = new DogMetrics(contextMock.Object);
metrics.Gauge("mystat", 1, 0D);
});
Assert.True(logs.Count == 0,
$"Expected no lines to come through but had {logs.Count}");
}
public void adding_a_tag_appends_it_with_a_hash()
{
var logs = new List <string>();
var contextMock = new Mock <ILambdaLogger>(MockBehavior.Strict);
contextMock.Setup(logger => logger.LogLine(It.IsAny <string>()))
.Callback((string s) => logs.Add(s));
var metrics = new DogMetrics(contextMock.Object);
var colour = new StatTag("colour", "blue");
metrics.Gauge("mystat", 1, 1D, colour);
Assert.True(logs.Count == 1);
Assert.True(logs.First().Contains("|#colour:blue"),
$@"Expected the tag string: ""|#colour:blue"" but couldn't find it in <{logs.First()}>");
}
public void a_tag_need_not_have_value()
{
var logs = new List <string>();
var contextMock = new Mock <ILambdaLogger>(MockBehavior.Strict);
contextMock.Setup(logger => logger.LogLine(It.IsAny <string>()))
.Callback((string s) => logs.Add(s));
var metrics = new DogMetrics(contextMock.Object);
var isBlue = new StatTag("isBlue");
var isCircle = new StatTag("isCircle");
metrics.Gauge("mystat", 1, 1D, isBlue, isCircle);
Assert.True(logs.Count == 1);
Assert.True(logs.First().Contains("|#isBlue,isCircle"),
$@"Expected the tag string: ""|#isBlue,isCircle"" but couldn't find it in <{logs.First()}>");
}
public void multiple_tags_are_separated_by_comma()
{
var logs = new List <string>();
var contextMock = new Mock <ILambdaLogger>(MockBehavior.Strict);
contextMock.Setup(logger => logger.LogLine(It.IsAny <string>()))
.Callback((string s) => logs.Add(s));
var metrics = new DogMetrics(contextMock.Object);
var colour = new StatTag("colour", "blue");
var shape = new StatTag("shape", "circle");
metrics.Gauge("mystat", 1, 1D, colour, shape);
Assert.True(logs.Count == 1);
Assert.True(logs.First().Contains("|#colour:blue,shape:circle"),
$@"Expected the tag string: ""|#colour:blue,shape:circle"" but couldn't find it in <{logs.First()}>");
}
public void a_sample_rate_of_0_point_5_sends_it_roughly_half_the_time()
{
// You probably shouldn't use this for .Counter or .Check though
// since there is no way to tell datadog it is sampled...
var logs = new List <string>();
var contextMock = new Mock <ILambdaLogger>(MockBehavior.Strict);
contextMock.Setup(logger => logger.LogLine(It.IsAny <string>()))
.Callback((string s) => logs.Add(s));
Repeat(100, () =>
{
var metrics = new DogMetrics(contextMock.Object);
metrics.Gauge("mystat", 1, 0.5D);
});
Assert.InRange(logs.Count, 40, 60);
}
public void with_no_tags_it_still_includes_the_hash()
{
// I need to check if this is 'ok' by the integration
// but for now just documenting the behaviour
var logs = new List <string>();
var contextMock = new Mock <ILambdaLogger>(MockBehavior.Strict);
contextMock.Setup(logger => logger.LogLine(It.IsAny <string>()))
.Callback((string s) => logs.Add(s));
var metrics = new DogMetrics(contextMock.Object);
metrics.Gauge("mystat", 1);
Assert.True(logs.Count == 1);
Assert.True(logs.First().Contains("|#"),
$@"Expected the tag string: ""|#"" but couldn't find it in <{logs.First()}>");
}
public void it_contains_the_current_unix_timestamp()
{
// Could this test fail when run on exactly the border of a second?
var logs = new List <string>();
var contextMock = new Mock <ILambdaLogger>(MockBehavior.Strict);
contextMock.Setup(logger => logger.LogLine(It.IsAny <string>()))
.Callback((string s) => logs.Add(s));
var metrics = new DogMetrics(contextMock.Object);
metrics.Gauge("mystat", 1);
var currentUnixTime = DateTimeOffset.UtcNow.ToUnixTimeSeconds();
Assert.True(logs.Count == 1);
Assert.True(logs.First().Contains($"|{currentUnixTime}|"),
$@"Expected the current unix timestamp: ""|{currentUnixTime}|"" but couldn't find it in <{logs.First()}>");
}
public void timer_is_just_a_histogram_with_the_value_nothing_fancy()
{
var logs = new List <string>();
var contextMock = new Mock <ILambdaLogger>(MockBehavior.Strict);
contextMock.Setup(logger => logger.LogLine(It.IsAny <string>()))
.Callback((string s) => logs.Add(s));
var metrics = new DogMetrics(contextMock.Object);
metrics.Timer("mystat", 34D);
Assert.True(logs.Count == 1);
Assert.True(logs.First().Contains("|histogram|"),
$@"Expected the stat type: ""|histogram|"" but couldn't find it in <{logs.First()}>");
Assert.True(logs.First().Contains("|mystat|"),
$@"Expected the stat name: ""|mystat|"" but couldn't find it in <{logs.First()}>");
Assert.True(logs.First().Contains("|34|"),
$@"Expected the stat value: ""|34|"" but couldn't find it in <{logs.First()}>");
}
public void decrement_is_a_counter_with_value_negative_1()
{
var logs = new List <string>();
var contextMock = new Mock <ILambdaLogger>(MockBehavior.Strict);
contextMock.Setup(logger => logger.LogLine(It.IsAny <string>()))
.Callback((string s) => logs.Add(s));
var metrics = new DogMetrics(contextMock.Object);
metrics.Decrement("mystat");
Assert.True(logs.Count == 1);
Assert.True(logs.First().Contains("|count|"),
$@"Expected the stat type: ""|count|"" but couldn't find it in <{logs.First()}>");
Assert.True(logs.First().Contains("|mystat|"),
$@"Expected the stat name: ""|mystat|"" but couldn't find it in <{logs.First()}>");
Assert.True(logs.First().Contains("|-1|"),
$@"Expected the stat value: ""|-1|"" but couldn't find it in <{logs.First()}>");
}
public void time_runs_the_function_and_returns_its_result_plus_logs_a_timer_metric()
{
var logs = new List <string>();
var contextMock = new Mock <ILambdaLogger>(MockBehavior.Strict);
contextMock.Setup(logger => logger.LogLine(It.IsAny <string>()))
.Callback((string s) => logs.Add(s));
var metrics = new DogMetrics(contextMock.Object);
var result = metrics.Time(() =>
{
Thread.Sleep(3000);
return("zap");
}, "mystat");
Assert.True(result == "zap",
$@"Expected the result of the function ""zap"" but had <{result}>");
Assert.True(logs.Count == 1);
Assert.True(logs.First().Contains("|histogram|"),
$@"Expected the stat type: ""|histogram|"" but couldn't find it in <{logs.First()}>");
Assert.True(logs.First().Contains("|mystat|"),
$@"Expected the stat name: ""|mystat|"" but couldn't find it in <{logs.First()}>");
Assert.InRange(GetTimeFromLog(logs.First()), 3000, 3005);
}
