Add tests for consent utilities

app/src/test/java/com/d4rk/androidtutorials/java/utils/ConsentUtilsTest.java

@@ -0,0 +1,78 @@
+package com.d4rk.androidtutorials.java.utils;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+import static org.mockito.Mockito.mock;
+import static org.mockito.Mockito.verify;
+import static org.mockito.Mockito.when;
+
+import android.content.Context;
+import android.content.SharedPreferences;
+
+import androidx.preference.PreferenceManager;
+
+import com.d4rk.androidtutorials.java.R;
+import com.google.firebase.analytics.FirebaseAnalytics;
+
+import org.junit.Test;
+import org.mockito.ArgumentCaptor;
+import org.mockito.MockedStatic;
+import org.mockito.Mockito;
+
+import java.util.Map;
+
+public class ConsentUtilsTest {
+
+    @Test
+    public void updateFirebaseConsent_setsExpectedStatuses() {
+        Context context = mock(Context.class);
+        FirebaseAnalytics analytics = mock(FirebaseAnalytics.class);
+
+        try (MockedStatic<FirebaseAnalytics> firebaseStatic = Mockito.mockStatic(FirebaseAnalytics.class)) {
+            firebaseStatic.when(() -> FirebaseAnalytics.getInstance(context)).thenReturn(analytics);
+
+            boolean analyticsConsent = true;
+            boolean adStorageConsent = false;
+            boolean adUserDataConsent = true;
+            boolean adPersonalizationConsent = false;
+
+            ConsentUtils.updateFirebaseConsent(context,
+                    analyticsConsent,
+                    adStorageConsent,
+                    adUserDataConsent,
+                    adPersonalizationConsent);
+
+            ArgumentCaptor<Map<FirebaseAnalytics.ConsentType, FirebaseAnalytics.ConsentStatus>> captor =
+                    ArgumentCaptor.forClass(Map.class);
+            verify(analytics).setConsent(captor.capture());
+            Map<FirebaseAnalytics.ConsentType, FirebaseAnalytics.ConsentStatus> result = captor.getValue();
+
+            assertEquals(FirebaseAnalytics.ConsentStatus.GRANTED,
+                    result.get(FirebaseAnalytics.ConsentType.ANALYTICS_STORAGE));
+            assertEquals(FirebaseAnalytics.ConsentStatus.DENIED,
+                    result.get(FirebaseAnalytics.ConsentType.AD_STORAGE));
+            assertEquals(FirebaseAnalytics.ConsentStatus.GRANTED,
+                    result.get(FirebaseAnalytics.ConsentType.AD_USER_DATA));
+            assertEquals(FirebaseAnalytics.ConsentStatus.DENIED,
+                    result.get(FirebaseAnalytics.ConsentType.AD_PERSONALIZATION));
+        }
+    }
+
+    @Test
+    public void canShowAds_readsStoredPreference() {
+        Context context = mock(Context.class);
+        SharedPreferences prefs = mock(SharedPreferences.class);
+        when(context.getString(R.string.key_consent_ad_storage)).thenReturn("consent_ad_storage");
+
+        try (MockedStatic<PreferenceManager> prefsStatic = Mockito.mockStatic(PreferenceManager.class)) {
+            prefsStatic.when(() -> PreferenceManager.getDefaultSharedPreferences(context)).thenReturn(prefs);
+
+            when(prefs.getBoolean("consent_ad_storage", true)).thenReturn(false);
+            assertFalse(ConsentUtils.canShowAds(context));
+
+            when(prefs.getBoolean("consent_ad_storage", true)).thenReturn(true);
+            assertTrue(ConsentUtils.canShowAds(context));
+        }
+    }
+}