Guava-ify https://github.com/google/ExoPlayer/commit/f2c51560c21bdd757c30678223345fa8f59fb82b

PiperOrigin-RevId: 333031301

testutils/src/main/java/com/google/android/exoplayer2/testutil/FakeSampleStream.java

@@ -190,13 +190,14 @@ public class FakeSampleStream implements SampleStream {
       }
     }
     sampleItemIndex = fakeSampleStreamItems.size();
-    if (!fakeSampleStreamItems.isEmpty()) {
-      FakeSampleStreamItem lastItem = Iterables.getLast(fakeSampleStreamItems);
+    @Nullable
+    FakeSampleStreamItem lastItem =
+        Iterables.getLast(fakeSampleStreamItems, /* defaultValue= */ null);
     readEOSBuffer =
-          lastItem.sampleInfo != null
+        lastItem != null
+            && lastItem.sampleInfo != null
             && ((lastItem.sampleInfo.flags & C.BUFFER_FLAG_END_OF_STREAM) != 0);
   }
-  }
 
   /**
    * Adds an item to the end of the queue of {@link FakeSampleStreamItem items}.