public async Task RootTraceSpanCreation()
{
//tracer faking
Tracer tracer = A.Fake <Tracer>();
A.CallTo(() => tracer.CreateTraceId())
.Returns("trace_id");
A.CallTo(() => tracer.CreateSpanId())
.Returns("span_id");
string spanId = null;
string parentSpanId = null;
string traceId = null;
DateTime startTime = DateTime.MinValue;
DateTime endTime = DateTime.MinValue;
string displayName = null;
Dictionary <string, string> attributes = null;
A.CallTo(() => tracer.SendAsync(A <TraceSpan> .Ignored))
.Invokes((TraceSpan traceSpan) =>
{
spanId = traceSpan.Id;
parentSpanId = traceSpan.ParentId;
traceId = traceSpan.TraceId;
startTime = traceSpan.StartTime;
endTime = traceSpan.EndTime;
displayName = traceSpan.DisplayName;
attributes = traceSpan.Attributes;
});
//span creating
TraceScope traceScope = new TraceScope("root", tracer);
traceScope.Attributes.Add("key", "value");
await Task.Delay(1);
traceScope.Dispose();
//checking
await Task.Delay(100);
Assert.Equal("span_id", spanId);
Assert.Null(parentSpanId);
Assert.Equal("trace_id", traceId);
Assert.NotEqual(startTime, DateTime.MinValue);
Assert.NotEqual(endTime, DateTime.MinValue);
Assert.True(endTime > startTime);
Assert.Equal("root", displayName);
Assert.NotNull(attributes);
Assert.Single(attributes);
}