Run ExoPlayerTest with preloading enabled and disabled

Replace with parametrized test when  https://issuetracker.google.com/316040980
is resolved.

PiperOrigin-RevId: 631096883

libraries/exoplayer/src/test/java/androidx/media3/exoplayer/ExoPlayerWithPreloadingEnabledTest.java

@@ -0,0 +1,31 @@
+/*
+ * Copyright (C) 2024 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 androidx.media3.exoplayer;
+
+import androidx.test.ext.junit.runners.AndroidJUnit4;
+import org.junit.runner.RunWith;
+
+/** Unit test for {@link ExoPlayer} with playlist preloading enabled. */
+// TODO(issuetracker.google.com/316040980): Replace this class with a parameterized ExoPlayerTest
+//     when resolved.
+@RunWith(AndroidJUnit4.class)
+public class ExoPlayerWithPreloadingEnabledTest extends ExoPlayerTest {
+
+  @Override
+  protected long getTargetPreloadDurationUs() {
+    return 5_000_000L;
+  }
+}

libraries/test_utils/src/main/java/androidx/media3/test/utils/ExoPlayerTestRunner.java

@@ -284,6 +284,16 @@ public final class ExoPlayerTestRunner implements Player.Listener, ActionSchedul
       return this;
     }
 
+    /**
+     * @see ExoPlayer#setPreloadConfiguration(ExoPlayer.PreloadConfiguration)
+     * @return This builder.
+     */
+    @CanIgnoreReturnValue
+    public Builder setPreloadConfiguration(ExoPlayer.PreloadConfiguration preloadConfiguration) {
+      testPlayerBuilder.setPreloadConfiguration(preloadConfiguration);
+      return this;
+    }
+
     /**
      * Sets an {@link ActionSchedule} to be run by the test runner. The first action will be
      * executed immediately before {@link ExoPlayer#prepare()}.

libraries/test_utils/src/main/java/androidx/media3/test/utils/TestExoPlayerBuilder.java

@@ -56,6 +56,7 @@ public class TestExoPlayerBuilder {
   private long seekForwardIncrementMs;
   private boolean deviceVolumeControlEnabled;
   private boolean suppressPlaybackWhenUnsuitableOutput;
+  @Nullable private ExoPlayer.PreloadConfiguration preloadConfiguration;
 
   public TestExoPlayerBuilder(Context context) {
     this.context = context;
@@ -160,6 +161,18 @@ public class TestExoPlayerBuilder {
     return this;
   }
 
+  /**
+   * Sets the preload configuration.
+   *
+   * @see ExoPlayer#setPreloadConfiguration(ExoPlayer.PreloadConfiguration)
+   */
+  @CanIgnoreReturnValue
+  public TestExoPlayerBuilder setPreloadConfiguration(
+      ExoPlayer.PreloadConfiguration preloadConfiguration) {
+    this.preloadConfiguration = preloadConfiguration;
+    return this;
+  }
+
   /**
    * Returns the {@link Renderer Renderers} that have been set with {@link #setRenderers} or null if
    * no {@link Renderer Renderers} have been explicitly set. Note that these renderers may not be
@@ -357,6 +370,10 @@ public class TestExoPlayerBuilder {
     if (mediaSourceFactory != null) {
       builder.setMediaSourceFactory(mediaSourceFactory);
     }
-    return builder.build();
+    ExoPlayer exoPlayer = builder.build();
+    if (preloadConfiguration != null) {
+      exoPlayer.setPreloadConfiguration(preloadConfiguration);
+    }
+    return exoPlayer;
   }
 }