package obs

import (
	"context"
	"testing"
)

func TestTracingIsOffUntilGivenSomewhereToSend(t *testing.T) {
	t.Setenv("OTEL_EXPORTER_OTLP_ENDPOINT", "")
	stop, err := SetupTracing(context.Background(), TracingOptions{Service: "t"})
	if err != nil || stop(context.Background()) != nil {
		t.Fatal(err)
	}
	for _, bad := range []string{"otel:4318", "ftp://otel:4318", "http://"} {
		if _, err := SetupTracing(context.Background(), TracingOptions{Endpoint: bad}); err == nil {
			t.Errorf("%q accepted", bad)
		}
	}
}