[Le Audio] Add test case for the QrCodeScanModeActivity

Bug: 232365943
Test: atest QrCodeScanModeActivityTest
Change-Id: I38db5957ff21608134aed2e26cd9c32f14b78eb9

src/com/android/settings/bluetooth/QrCodeScanModeActivity.java

@@ -30,7 +30,15 @@ import com.android.settingslib.R;
 import com.android.settingslib.bluetooth.BluetoothBroadcastUtils;
 import com.android.settingslib.bluetooth.BluetoothUtils;
 
-//TODO (b/232365943): Add test case for tthe QrCode UI.
+/**
+ * Finding a broadcast through QR code.
+ *
+ * To use intent action {@link BluetoothBroadcastUtils#ACTION_BLUETOOTH_LE_AUDIO_QR_CODE_SCANNER},
+ * specify the bluetooth device sink of the broadcast to be provisioned in
+ * {@link BluetoothBroadcastUtils#EXTRA_BLUETOOTH_DEVICE_SINK} and check the operation for all
+ * coordinated set members throughout one session or not by
+ * {@link BluetoothBroadcastUtils#EXTRA_BLUETOOTH_SINK_IS_GROUP}.
+ */
 public class QrCodeScanModeActivity extends QrCodeScanModeBaseActivity {
     private static final boolean DEBUG = BluetoothUtils.D;
     private static final String TAG = "QrCodeScanModeActivity";

tests/unit/src/com/android/settings/bluetooth/QrCodeScanModeActivityTest.java

@@ -0,0 +1,72 @@
+/**
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package com.android.settings.bluetooth;
+
+import static org.mockito.Mockito.doNothing;
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import android.content.Intent;
+
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+import androidx.test.platform.app.InstrumentationRegistry;
+
+import com.android.settingslib.bluetooth.BluetoothBroadcastUtils;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+
+@RunWith(AndroidJUnit4.class)
+public class QrCodeScanModeActivityTest {
+
+    @Mock
+    private Intent mIntent;
+    private QrCodeScanModeActivity mActivity;
+
+    @Before
+    public void setUp() {
+        mIntent = new Intent(BluetoothBroadcastUtils.ACTION_BLUETOOTH_LE_AUDIO_QR_CODE_SCANNER);
+        InstrumentationRegistry.getInstrumentation().runOnMainSync(() -> {
+            try {
+                mActivity =
+                        spy((QrCodeScanModeActivity) InstrumentationRegistry
+                                .getInstrumentation().newActivity(
+                                        getClass().getClassLoader(),
+                                        QrCodeScanModeActivity.class.getName(), mIntent));
+            } catch (Exception e) {
+                throw new RuntimeException(e); // nothing to do
+            }
+        });
+    }
+
+    @Test
+    public void handleIntent_noIntentAction_shouldFinish() {
+        mIntent = new Intent();
+        mActivity.handleIntent(mIntent);
+        verify(mActivity).finish();
+    }
+
+    @Test
+    public void handleIntent_hasIntentExtra_shouldShowFragment() {
+        doNothing().when(mActivity).showQrCodeScannerFragment(mIntent);
+        mActivity.handleIntent(mIntent);
+        verify(mActivity).showQrCodeScannerFragment(mIntent);
+    }
+
+}