Added tests to verify that calling show() on AppOpen and Interstitial ads before they are loaded does not cause a crash.

Added tests to verify the public constructors of AppOpen, Interstitial, Rewarded, and RewardedInterstitial ad wrappers do not crash.
Enhanced Rewarded and RewardedInterstitial show tests to include verification of impression, click, and reward callbacks.
Added a basic test for the AdWrapper mechanics.

PiperOrigin-RevId: 910308333

Author: Mobile Ads Developer Relations

source/plugin/Assets/Plugins/Android/GoogleMobileAdsPlugin.androidlib/src/test/java/com/google/unity/ads/nextgen/UnityAppOpenAdTest.java

@@ -77,6 +77,12 @@ public void testLoad_onAdFailedToLoad() {
     verify(mockCallback).onAppOpenAdFailedToLoad(loadAdError);
   }
 
+  @Test
+  public void testShow_whenAdNotLoaded_doesNotThrow() {
+    // Should log an error but not crash
+    unityAppOpenAd.show();
+  }
+
   @Test
   @SuppressWarnings("EnumOrdinal")
   public void testShow_showsAdAndTriggersCallbacks() {
@@ -196,4 +202,11 @@ public void testConstructorWithAppOpenAd() {
     unityAppOpenAd = new UnityAppOpenAd(activity, mockCallback, mockAppOpenAd);
     assertThat(unityAppOpenAd.getResponseInfo()).isEqualTo(responseInfo);
   }
+
+  @Test
+  public void testPublicConstructor() {
+    // verifies creation doesn't crash
+    UnityAppOpenAd ad = new UnityAppOpenAd(activity, mockCallback);
+    assertThat(ad).isNotNull();
+  }
 }

source/plugin/Assets/Plugins/Android/GoogleMobileAdsPlugin.androidlib/src/test/java/com/google/unity/ads/nextgen/UnityInterstitialAdTest.java

@@ -78,6 +78,12 @@ public void testLoad_onAdFailedToLoad() {
     verify(mockCallback).onInterstitialAdFailedToLoad(loadAdError);
   }
 
+  @Test
+  public void testShow_whenAdNotLoaded_doesNotThrow() {
+    // Should log an error but not crash
+    unityInterstitialAd.show();
+  }
+
   @Test
   @SuppressWarnings("EnumOrdinal")
   public void testShow_showsAdAndTriggersCallbacks() {
@@ -196,4 +202,11 @@ public void testConstructorWithInterstitialAd() {
     unityInterstitialAd = new UnityInterstitialAd(activity, mockCallback, mockInterstitialAd);
     assertThat(unityInterstitialAd.getResponseInfo()).isEqualTo(responseInfo);
   }
+
+  @Test
+  public void testPublicConstructor() {
+    // verifies creation doesn't crash
+    UnityInterstitialAd ad = new UnityInterstitialAd(activity, mockCallback);
+    assertThat(ad).isNotNull();
+  }
 }

source/plugin/Assets/Plugins/Android/GoogleMobileAdsPlugin.androidlib/src/test/java/com/google/unity/ads/nextgen/UnityRewardedAdTest.java

@@ -14,6 +14,8 @@
 import com.google.android.libraries.ads.mobile.sdk.common.LoadAdError;
 import com.google.android.libraries.ads.mobile.sdk.common.PrecisionType;
 import com.google.android.libraries.ads.mobile.sdk.common.ResponseInfo;
+import com.google.android.libraries.ads.mobile.sdk.rewarded.OnUserEarnedRewardListener;
+import com.google.android.libraries.ads.mobile.sdk.rewarded.RewardItem;
 import com.google.android.libraries.ads.mobile.sdk.rewarded.RewardedAd;
 import com.google.android.libraries.ads.mobile.sdk.rewarded.RewardedAdEventCallback;
 import java.util.ArrayList;
@@ -46,6 +48,7 @@ public final class UnityRewardedAdTest {
   @Captor private ArgumentCaptor<AdRequest> adRequestCaptor;
   @Captor private ArgumentCaptor<AdLoadCallback<RewardedAd>> adLoadCallbackCaptor;
   @Captor private ArgumentCaptor<RewardedAdEventCallback> adEventCallbackCaptor;
+  @Captor private ArgumentCaptor<OnUserEarnedRewardListener> rewardListenerCaptor;
 
   private UnityRewardedAd unityRewardedAd;
 
@@ -94,7 +97,7 @@ public void testShow_whenAdLoaded_showsAdAndTriggersCallbacks() {
 
     // Verify the ad is shown and the event callback is set.
     verify(mockRewardedAd).setAdEventCallback(adEventCallbackCaptor.capture());
-    verify(mockRewardedAd).show(Mockito.eq(activity), Mockito.any());
+    verify(mockRewardedAd).show(Mockito.eq(activity), rewardListenerCaptor.capture());
     // Verify immersive mode was set on the ad.
     verify(mockRewardedAd).setImmersiveMode(true);
 
@@ -119,6 +122,27 @@ public void testShow_whenAdLoaded_showsAdAndTriggersCallbacks() {
     String currencyCode = "USD";
     eventCallback.onAdPaid(new AdValue(precisionType, valueMicros, currencyCode));
     verify(mockCallback).onPaidEvent(precisionType.ordinal(), valueMicros, currencyCode);
+
+    eventCallback.onAdImpression();
+    verify(mockCallback).onAdImpression();
+
+    eventCallback.onAdClicked();
+    verify(mockCallback).onAdClicked();
+    OnUserEarnedRewardListener rewardListener = rewardListenerCaptor.getValue();
+    RewardItem rewardItem =
+        new RewardItem() {
+          @Override
+          public int getAmount() {
+            return 10;
+          }
+
+          @Override
+          public String getType() {
+            return "coins";
+          }
+        };
+    rewardListener.onUserEarnedReward(rewardItem);
+    verify(mockCallback).onUserEarnedReward("coins", 10);
   }
 
   @Test
@@ -194,4 +218,19 @@ public void testConstructorWithRewardedAd() {
     unityRewardedAd = new UnityRewardedAd(activity, mockCallback, mockRewardedAd);
     assertThat(unityRewardedAd.getResponseInfo()).isEqualTo(responseInfo);
   }
+
+  @Test
+  public void testPublicConstructor() {
+    // verifies creation doesn't crash
+    UnityRewardedAd ad = new UnityRewardedAd(activity, mockCallback);
+    assertThat(ad).isNotNull();
+  }
+
+  // Extra Test for AdWrapper, can be used for any ad type.
+  @Test
+  public void testAdWrapper_mechanics() {
+    AdWrapper<String> dummyWrapper = new AdWrapper<>((request, callback) -> {});
+
+    dummyWrapper.load(mockAdRequest, null);
+  }
 }

source/plugin/Assets/Plugins/Android/GoogleMobileAdsPlugin.androidlib/src/test/java/com/google/unity/ads/nextgen/UnityRewardedInterstitialAdTest.java

@@ -14,6 +14,8 @@
 import com.google.android.libraries.ads.mobile.sdk.common.LoadAdError;
 import com.google.android.libraries.ads.mobile.sdk.common.PrecisionType;
 import com.google.android.libraries.ads.mobile.sdk.common.ResponseInfo;
+import com.google.android.libraries.ads.mobile.sdk.rewarded.OnUserEarnedRewardListener;
+import com.google.android.libraries.ads.mobile.sdk.rewarded.RewardItem;
 import com.google.android.libraries.ads.mobile.sdk.rewardedinterstitial.RewardedInterstitialAd;
 import com.google.android.libraries.ads.mobile.sdk.rewardedinterstitial.RewardedInterstitialAdEventCallback;
 import java.util.ArrayList;
@@ -45,6 +47,7 @@ public final class UnityRewardedInterstitialAdTest {
   @Captor private ArgumentCaptor<AdRequest> adRequestCaptor;
   @Captor private ArgumentCaptor<AdLoadCallback<RewardedInterstitialAd>> adLoadCallbackCaptor;
   @Captor private ArgumentCaptor<RewardedInterstitialAdEventCallback> adEventCallbackCaptor;
+  @Captor private ArgumentCaptor<OnUserEarnedRewardListener> rewardListenerCaptor;
 
   private UnityRewardedInterstitialAd unityRewardedInterstitialAd;
 
@@ -94,7 +97,7 @@ public void testShow_whenAdLoaded_showsAdAndTriggersCallbacks() {
 
     // Verify the ad is shown and the event callback is set.
     verify(mockRewardedInterstitialAd).setAdEventCallback(adEventCallbackCaptor.capture());
-    verify(mockRewardedInterstitialAd).show(Mockito.eq(activity), Mockito.any());
+    verify(mockRewardedInterstitialAd).show(Mockito.eq(activity), rewardListenerCaptor.capture());
     // Verify immersive mode was set on the ad.
     verify(mockRewardedInterstitialAd).setImmersiveMode(true);
 
@@ -118,6 +121,28 @@ public void testShow_whenAdLoaded_showsAdAndTriggersCallbacks() {
     String currencyCode = "USD";
     eventCallback.onAdPaid(new AdValue(precisionType, valueMicros, currencyCode));
     verify(mockCallback).onPaidEvent(precisionType.ordinal(), valueMicros, currencyCode);
+
+    eventCallback.onAdImpression();
+    verify(mockCallback).onAdImpression();
+
+    eventCallback.onAdClicked();
+    verify(mockCallback).onAdClicked();
+
+    OnUserEarnedRewardListener rewardListener = rewardListenerCaptor.getValue();
+    RewardItem rewardItem =
+        new RewardItem() {
+          @Override
+          public int getAmount() {
+            return 10;
+          }
+
+          @Override
+          public String getType() {
+            return "coins";
+          }
+        };
+    rewardListener.onUserEarnedReward(rewardItem);
+    verify(mockCallback).onUserEarnedReward("coins", 10);
   }
 
   @Test
@@ -184,4 +209,11 @@ public void testSetPlacementId_setsPlacementId() {
     // Verify that setPlacementId was called on the underlying ad.
     verify(mockRewardedInterstitialAd).setPlacementId(placementId);
   }
+
+  @Test
+  public void testPublicConstructor() {
+    // verifies creation doesn't crash
+    UnityRewardedInterstitialAd ad = new UnityRewardedInterstitialAd(activity, mockCallback);
+    assertThat(ad).isNotNull();
+  }
 }