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 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 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 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 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 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("|#"),
$@"Expected the tag string: ""|#"" but couldn't find it in <{logs.First()}>");
}
public void a_sample_rate_of_0_point_5_sends_it_roughly_half_the_time()
{
// You probably shouldn't use this for .Counter or .Check though
// since there is no way to tell datadog it is sampled...
var logs = new List <string>();
var contextMock = new Mock <ILambdaLogger>(MockBehavior.Strict);
contextMock.Setup(logger => logger.LogLine(It.IsAny <string>()))
.Callback((string s) => logs.Add(s));
Repeat(100, () =>
{
var metrics = new DogMetrics(contextMock.Object);
metrics.Gauge("mystat", 1, 0.5D);
});
Assert.InRange(logs.Count, 40, 60);
}
public void it_contains_the_current_unix_timestamp()
{
// Could this test fail when run on exactly the border of a second?
var logs = new List <string>();
var contextMock = new Mock <ILambdaLogger>(MockBehavior.Strict);
contextMock.Setup(logger => logger.LogLine(It.IsAny <string>()))
.Callback((string s) => logs.Add(s));
var metrics = new DogMetrics(contextMock.Object);
metrics.Gauge("mystat", 1);
var currentUnixTime = DateTimeOffset.UtcNow.ToUnixTimeSeconds();
Assert.True(logs.Count == 1);
Assert.True(logs.First().Contains($"|{currentUnixTime}|"),
$@"Expected the current unix timestamp: ""|{currentUnixTime}|"" but couldn't find it in <{logs.First()}>");
}