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-rw-r--r--utils/trace/trace_test.go95
1 files changed, 95 insertions, 0 deletions
diff --git a/utils/trace/trace_test.go b/utils/trace/trace_test.go
new file mode 100644
index 0000000..6f8f140
--- /dev/null
+++ b/utils/trace/trace_test.go
@@ -0,0 +1,95 @@
+package trace
+
+import (
+ "bytes"
+ "io"
+ "log"
+ "testing"
+)
+
+func TestMain(m *testing.M) {
+ defer SetLogger(newLogger())
+ if code := m.Run(); code != 0 {
+ panic(code)
+ }
+}
+
+func setUpTest(t testing.TB, buf *bytes.Buffer) {
+ t.Cleanup(func() {
+ if buf != nil {
+ buf.Reset()
+ }
+ SetTarget(0)
+ })
+ w := io.Discard
+ if buf != nil {
+ w = buf
+ }
+ SetLogger(log.New(w, "", 0))
+}
+
+func TestEmpty(t *testing.T) {
+ var buf bytes.Buffer
+ setUpTest(t, &buf)
+ General.Print("test")
+ if buf.String() != "" {
+ t.Error("expected empty string")
+ }
+}
+
+func TestOneTarget(t *testing.T) {
+ var buf bytes.Buffer
+ setUpTest(t, &buf)
+ SetTarget(General)
+ General.Print("test")
+ if buf.String() != "test\n" {
+ t.Error("expected 'test'")
+ }
+}
+
+func TestMultipleTargets(t *testing.T) {
+ var buf bytes.Buffer
+ setUpTest(t, &buf)
+ SetTarget(General | Packet)
+ General.Print("a")
+ Packet.Print("b")
+ if buf.String() != "a\nb\n" {
+ t.Error("expected 'a\nb\n'")
+ }
+}
+
+func TestPrintf(t *testing.T) {
+ var buf bytes.Buffer
+ setUpTest(t, &buf)
+ SetTarget(General)
+ General.Printf("a %d", 1)
+ if buf.String() != "a 1\n" {
+ t.Error("expected 'a 1\n'")
+ }
+}
+
+func TestDisabledMultipleTargets(t *testing.T) {
+ var buf bytes.Buffer
+ setUpTest(t, &buf)
+ SetTarget(General)
+ General.Print("a")
+ Packet.Print("b")
+ if buf.String() != "a\n" {
+ t.Error("expected 'a\n'")
+ }
+}
+
+func BenchmarkDisabledTarget(b *testing.B) {
+ setUpTest(b, nil)
+ for i := 0; i < b.N; i++ {
+ General.Print("test")
+ }
+}
+
+func BenchmarkEnabledTarget(b *testing.B) {
+ setUpTest(b, nil)
+ SetTarget(General)
+ for i := 0; i < b.N; i++ {
+ General.Print("test")
+ }
+}