Function BenchmarkSpanIDAndKindToToken

pkg/util/traceid_test.go:255–296

(b *testing.B)

var tokenToPreventOptimization uint64

func BenchmarkSpanIDAndKindToToken(b *testing.B) {
	type testDataSpanID struct {
		SpanID []byte
		Kind   int
	}

	randomTestCasesSpanID := func(n int, idLen int) []testDataSpanID {
		testCases := make([]testDataSpanID, 0, n)
		for i := 0; i < n; i++ {
			id := make([]byte, idLen)
			for j := range id {
				id[j] = byte(rand.Intn(256))
			}
			testCases = append(testCases, testDataSpanID{SpanID: id, Kind: rand.Intn(6)})
		}
		return testCases
	}

	benchmarks := []struct {
		name string
		data []testDataSpanID
	}{
		{
			name: "id length 4",
			data: randomTestCasesSpanID(1_000, 4),
		},
		{
			name: "id length 8",
			data: randomTestCasesSpanID(1_000, 8),
		},
	}
	for _, bc := range benchmarks {
		b.Run(bc.name, func(b *testing.B) {
			b.ResetTimer()
			for i := 0; i < b.N; i++ {
				d := bc.data[i%len(bc.data)]
				tokenToPreventOptimization = SpanIDAndKindToToken(d.SpanID, d.Kind)
			}
			b.ReportAllocs()
		})
	}
}

func TestPadTraceIDString(t *testing.T) {
	tc := []struct {