content: /*
   * Copyright (C) 2018 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.test.core.os;
  
  import android.os.Parcel;
  import android.os.Parcelable;
  import android.os.Parcelable.Creator;
  
  /** Testing utilities for {@link Parcelable}s. */
  public final class Parcelables {
    /**
     * Parcelables are lazily marshalled, meaning that in typical testing, no marshalling would occur
     * and would therefore go untested. This forces marshalling to happen for a Parcelable.
     *
     * <p>This utility will marshall the provided Parcelable, and attempt to recreate it with the
     * given CREATOR. It is up to the caller to validate the two instances are equivalent.
     *
     * @param parcelable the parcelable to marshall.
     * @param creator the CREATOR field for that parcelable.
     * @return a new instance of the parcelable that has been unmarshalled.
     */
    public static <T extends Parcelable> T forceParcel(T parcelable, Creator<T> creator) {
      Parcel parcel = Parcel.obtain();
      try {
        parcelable.writeToParcel(parcel, 0);
        parcel.setDataPosition(0);
        return creator.createFromParcel(parcel);
      } finally {
        parcel.recycle();
      }
    }
  
    private Parcelables() {}
  }
  
  