public void CopyToThrowsOnNonExistingCollector()
{
var source = new CollectorRegistry();
var destination = new CollectorRegistry();
Assert.Throws <ArgumentOutOfRangeException>(() => source.CopyTo("test_counter", destination));
}
public void CopyToThrowsOnNullDestination()
{
var source = new CollectorRegistry();
var factory = new MetricFactory(source);
factory.CreateCounter("test_counter", string.Empty).Inc();
Assert.Throws <ArgumentNullException>(() => source.CopyTo("test_counter", null));
}
public void CopyToAddsCollectorToDestination()
{
var source = new CollectorRegistry();
var factory = new MetricFactory(source);
var destination = new CollectorRegistry();
factory.CreateCounter("test_counter", string.Empty).Inc();
source.CopyTo("test_counter", destination);
Assert.True(destination.TryGet("test_counter", out _));
}