diff --git a/forceexport_test.go b/forceexport_test.go
index 49b0f0e..89edfb2 100644
--- a/forceexport_test.go
+++ b/forceexport_test.go
@@ -2,9 +2,16 @@ package forceexport
 
 import (
 	"fmt"
+	"reflect"
+	"runtime"
 	"testing"
 )
 
+// funcName resolves the name of a given function
+func funcName(f interface{}) string {
+	return runtime.FuncForPC(reflect.ValueOf(f).Pointer()).Name()
+}
+
 func TestTimeNow(t *testing.T) {
 	var timeNowFunc func() (int64, int32)
 	GetFunc(&timeNowFunc, "time.now")
@@ -41,19 +48,19 @@ func TestGetSelf(t *testing.T) {
 	var getFunc func(interface{}, string) error
 	err := GetFunc(&getFunc, "github.com/alangpierce/go-forceexport.GetFunc")
 	if err != nil {
-		t.Error("Error: %s", err)
+		t.Errorf("Error: %s", err)
 	}
 	// The two functions should share the same code pointer, so they should
 	// have the same string representation.
-	if fmt.Sprint(getFunc) != fmt.Sprint(GetFunc) {
+	if fmt.Sprint(funcName(getFunc)) != fmt.Sprint(funcName(GetFunc)) {
 		t.Errorf("Expected ")
 	}
 	// Call it again on itself!
 	err = getFunc(&getFunc, "github.com/alangpierce/go-forceexport.GetFunc")
 	if err != nil {
-		t.Error("Error: %s", err)
+		t.Errorf("Error: %s", err)
 	}
-	if fmt.Sprint(getFunc) != fmt.Sprint(GetFunc) {
+	if fmt.Sprint(funcName(getFunc)) != fmt.Sprint(funcName(GetFunc)) {
 		t.Errorf("Expected ")
 	}
 }
@@ -68,3 +75,12 @@ func TestInvalidFunc(t *testing.T) {
 		t.Error("Expected a nil function.")
 	}
 }
+
+// BenchmarkGetMainInit check how long it takes to find the symbol main.init,
+// which is typically the last func symbol(by experiment).
+func BenchmarkGetMainInit(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		var main_init func()
+		GetFunc(&main_init, "main.init")
+	}
+}