press empty to release and defer close

src/device/output/keyboard.go

@@ -32,14 +32,22 @@ func (kb Keyboard) wait() {
 func (kb Keyboard) Press(keys ...int) {
 	kb.wait()
 
-	kb.Release()
+	kb.release()
+	if len(keys) == 0 {
+		return
+	}
+
 	kb.kb.SetKeys(keys...)
 	if err := kb.kb.Press(); err != nil {
 		log.Println("failed to press keys:", err)
 	}
 }
 
-func (kb Keyboard) Release() {
+func (kb Keyboard) Close() {
+	kb.release()
+}
+
+func (kb Keyboard) release() {
 	kb.wait()
 
 	if err := kb.kb.Release(); err != nil {

src/device/output/keyboard_test.go

@@ -10,7 +10,7 @@ import (
 
 func TestKeyboardIntegration(t *testing.T) {
 	kb := output.NewKeyboard()
-	defer kb.Release()
+	t.Cleanup(kb.Close)
 
 	t.Log("pressing 'a' for 5 seconds")
 	kb.Press(output.A)
@@ -19,5 +19,5 @@ func TestKeyboardIntegration(t *testing.T) {
 		time.Sleep(time.Second)
 	}
 	t.Logf("releasing")
-	kb.Release()
+	kb.Press()
 }