1 files changed, 35 insertions, 0 deletions
diff --git a/pkg/log/log_test.go b/pkg/log/log_test.go
index 0634e7c1f..402cc29ae 100644
--- a/pkg/log/log_test.go
+++ b/pkg/log/log_test.go
@@ -16,18 +16,23 @@ package log
 
 import (
 	"fmt"
+	"strings"
 	"testing"
 )
 
 type testWriter struct {
 	lines []string
 	fail  bool
+	limit int
 }
 
 func (w *testWriter) Write(bytes []byte) (int, error) {
 	if w.fail {
 		return 0, fmt.Errorf("simulated failure")
 	}
+	if w.limit > 0 && len(w.lines) >= w.limit {
+		return len(bytes), nil
+	}
 	w.lines = append(w.lines, string(bytes))
 	return len(bytes), nil
 }
@@ -68,3 +73,33 @@ func TestDropMessages(t *testing.T) {
 		}
 	}
 }
+
+func TestCaller(t *testing.T) {
+	tw := &testWriter{}
+	e := &GoogleEmitter{Writer: Writer{Next: tw}}
+	bl := &BasicLogger{
+		Emitter: e,
+		Level:   Debug,
+	}
+	bl.Debugf("testing...\n") // Just for file + line.
+	if len(tw.lines) != 1 {
+		t.Errorf("expected 1 line, got %d", len(tw.lines))
+	}
+	if !strings.Contains(tw.lines[0], "log_test.go") {
+		t.Errorf("expected log_test.go, got %q", tw.lines[0])
+	}
+}
+
+func BenchmarkGoogleLogging(b *testing.B) {
+	tw := &testWriter{
+		limit: 1, // Only record one message.
+	}
+	e := &GoogleEmitter{Writer: Writer{Next: tw}}
+	bl := &BasicLogger{
+		Emitter: e,
+		Level:   Debug,
+	}
+	for i := 0; i < b.N; i++ {
+		bl.Debugf("hello %d, %d, %d", 1, 2, 3)
+	}
+}