DoNotDisturbUtils: refactor to avoid mocking static stuff

Signed-off-by: Álvaro Brey <alvaro.brey@nextcloud.com>

app/src/main/java/com/nextcloud/talk/utils/DoNotDisturbUtils.kt

@@ -20,22 +20,33 @@
 
 package com.nextcloud.talk.utils
 
+import android.annotation.SuppressLint
 import android.app.NotificationManager
 import android.content.Context
 import android.media.AudioManager
 import android.os.Build
 import android.os.Vibrator
+import androidx.annotation.VisibleForTesting
 import com.nextcloud.talk.application.NextcloudTalkApplication
 
 object DoNotDisturbUtils {
-    fun shouldPlaySound(): Boolean {
-        val context = NextcloudTalkApplication.sharedApplication?.applicationContext
+
+    private var buildVersion = Build.VERSION.SDK_INT
+
+    @VisibleForTesting
+    fun setTestingBuildVersion(version: Int) {
+        buildVersion = version
+    }
+
+    @SuppressLint("NewApi")
+    @JvmOverloads
+    fun shouldPlaySound(context: Context? = NextcloudTalkApplication.sharedApplication?.applicationContext): Boolean {
 
         val notificationManager = context?.getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
         val audioManager = context.getSystemService(Context.AUDIO_SERVICE) as AudioManager
 
         var shouldPlaySound = true
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
+        if (buildVersion >= Build.VERSION_CODES.M) {
             if (notificationManager.currentInterruptionFilter != NotificationManager.INTERRUPTION_FILTER_ALL) {
                 shouldPlaySound = false
             }
@@ -50,16 +61,18 @@ object DoNotDisturbUtils {
         return shouldPlaySound
     }
 
-    fun hasVibrator(): Boolean {
-        val context = NextcloudTalkApplication.sharedApplication?.applicationContext
+    private fun hasVibrator(context: Context?): Boolean {
         val vibrator = context?.getSystemService(Context.VIBRATOR_SERVICE) as Vibrator
         return vibrator.hasVibrator()
     }
 
-    fun shouldVibrate(vibrate: Boolean): Boolean {
+    @JvmOverloads
+    fun shouldVibrate(
+        context: Context? = NextcloudTalkApplication.sharedApplication?.applicationContext,
+        vibrate: Boolean
+    ): Boolean {
 
-        if (hasVibrator()) {
-            val context = NextcloudTalkApplication.sharedApplication?.applicationContext
+        if (hasVibrator(context)) {
             val audioManager = context?.getSystemService(Context.AUDIO_SERVICE) as AudioManager
 
             return if (vibrate) {

app/src/test/java/com/nextcloud/talk/utils/DoNotDisturbUtilsTest.java

@@ -26,36 +26,20 @@ import android.media.AudioManager;
 import android.os.Build;
 import android.os.Vibrator;
 
-import com.nextcloud.talk.application.NextcloudTalkApplication;
-
 import org.junit.Before;
 import org.junit.Test;
-import org.junit.runner.RunWith;
 import org.mockito.Mock;
 import org.mockito.MockitoAnnotations;
-import org.powermock.api.mockito.PowerMockito;
-import org.powermock.core.classloader.annotations.PrepareForTest;
-import org.powermock.modules.junit4.PowerMockRunner;
-import org.powermock.reflect.Whitebox;
-
-import java.lang.reflect.Field;
-import java.lang.reflect.Modifier;
 
 import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertTrue;
 import static org.mockito.Mockito.when;
-import static org.powermock.api.mockito.PowerMockito.mockStatic;
 
-@RunWith(PowerMockRunner.class)
-@PrepareForTest(NextcloudTalkApplication.class)
 public class DoNotDisturbUtilsTest {
 
     @Mock
     private Context context;
 
-    @Mock
-    private NextcloudTalkApplication application;
-
     @Mock
     private NotificationManager notificationManager;
 
@@ -68,46 +52,30 @@ public class DoNotDisturbUtilsTest {
     @Before
     public void setUp() {
         MockitoAnnotations.openMocks(this);
-        mockStatic(NextcloudTalkApplication.Companion.class);
-        NextcloudTalkApplication.Companion companionMock = PowerMockito.mock(NextcloudTalkApplication.Companion.class);
-        Whitebox.setInternalState(NextcloudTalkApplication.class,"Companion",companionMock);
-        PowerMockito.when(NextcloudTalkApplication.Companion.getSharedApplication()).thenReturn(application);
-        when(application.getApplicationContext()).thenReturn(context);
         when(context.getSystemService(Context.NOTIFICATION_SERVICE)).thenReturn(notificationManager);
         when(context.getSystemService(Context.AUDIO_SERVICE)).thenReturn(audioManager);
         when(context.getSystemService(Context.VIBRATOR_SERVICE)).thenReturn(vibrator);
     }
 
-    private static void setFinalStatic(Field field, Object newValue) throws Exception {
-        field.setAccessible(true);
-
-        Field modifiersField = Field.class.getDeclaredField("modifiers");
-        modifiersField.setAccessible(true);
-        modifiersField.setInt(field, field.getModifiers() & ~Modifier.FINAL);
-
-        field.set(null, newValue);
-    }
-
 
     @Test
-    public void shouldPlaySound_givenAndroidMAndInterruptionFilterNone_assertReturnsFalse()
-            throws Exception {
-        setFinalStatic(Build.VERSION.class.getField("SDK_INT"), Build.VERSION_CODES.M);
+    public void shouldPlaySound_givenAndroidMAndInterruptionFilterNone_assertReturnsFalse() {
+        DoNotDisturbUtils.INSTANCE.setTestingBuildVersion(Build.VERSION_CODES.M);
 
         when(notificationManager.getCurrentInterruptionFilter()).thenReturn(NotificationManager.INTERRUPTION_FILTER_NONE);
         when(audioManager.getRingerMode()).thenReturn(AudioManager.RINGER_MODE_NORMAL);
 
         assertFalse("shouldPlaySound incorrectly returned true",
-                DoNotDisturbUtils.INSTANCE.shouldPlaySound());
+                    DoNotDisturbUtils.INSTANCE.shouldPlaySound(context));
     }
 
     @Test
     public void shouldPlaySound_givenRingerModeNotNormal_assertReturnsFalse() throws Exception {
-        setFinalStatic(Build.VERSION.class.getField("SDK_INT"), Build.VERSION_CODES.LOLLIPOP);
+        DoNotDisturbUtils.INSTANCE.setTestingBuildVersion(Build.VERSION_CODES.LOLLIPOP);
         when(audioManager.getRingerMode()).thenReturn(AudioManager.RINGER_MODE_VIBRATE);
 
         assertFalse("shouldPlaySound incorrectly returned true",
-                DoNotDisturbUtils.INSTANCE.shouldPlaySound());
+                    DoNotDisturbUtils.INSTANCE.shouldPlaySound(context));
     }
 
     @Test
@@ -115,7 +83,7 @@ public class DoNotDisturbUtilsTest {
         when(vibrator.hasVibrator()).thenReturn(false);
 
         assertFalse("shouldVibrate returned true despite no vibrator",
-                DoNotDisturbUtils.INSTANCE.shouldVibrate(true));
+                    DoNotDisturbUtils.INSTANCE.shouldVibrate(context, true));
     }
 
     @Test
@@ -125,7 +93,7 @@ public class DoNotDisturbUtilsTest {
         when(audioManager.getRingerMode()).thenReturn(AudioManager.RINGER_MODE_NORMAL);
 
         assertTrue("shouldVibrate incorrectly returned false",
-                DoNotDisturbUtils.INSTANCE.shouldVibrate(true));
+                   DoNotDisturbUtils.INSTANCE.shouldVibrate(context, true));
     }
 
     @Test
@@ -135,6 +103,6 @@ public class DoNotDisturbUtilsTest {
         when(audioManager.getRingerMode()).thenReturn(AudioManager.RINGER_MODE_SILENT);
 
         assertFalse("shouldVibrate returned true despite ringer mode set to silent",
-                DoNotDisturbUtils.INSTANCE.shouldVibrate(true));
+                    DoNotDisturbUtils.INSTANCE.shouldVibrate(context, true));
     }
 }