content: /*
   * Copyright (C) 2016 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 com.android.server.wifi;
  
  import android.annotation.NonNull;
  
  import com.android.internal.annotations.VisibleForTesting;
  
  /** Abstraction of android.os.SystemProperties, to enable mocking out its static methods. */
  @VisibleForTesting
  public interface PropertyService {
      /**
       * Get the current value of |key|.
       * @return value of |key|, if key exists; |defaultValue| or empty string otherwise
       */
      @NonNull
      String get(String key, String defaultValue);
  
      /**
       * Set the value for |key|.
       * @throws IllegalArgumentException if the key exceeds 32 characters
       * @throws IllegalArgumentException if the value exceeds 92 characters
       */
      void set(String key, String val);
  
      /**
       * Get the current value of |key|.
       * @return value of |key|, if key exists; |defaultValue| otherwise
       */
      boolean getBoolean(String key, boolean defaultValue);
  
      /**
       * Get the current value of |key|.
       * @return value of |key|, if key exists; |defaultValue| otherwise
       */
      String getString(String key, String defaultValue);
  }
  