/*
 * Copyright (C) 2023 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 android.tools.rules

import android.tools.Cache
import android.tools.ICache
import org.junit.rules.TestWatcher
import org.junit.runner.Description

class CacheCleanupRule : TestWatcher() {
    private var cacheBackup: ICache.Backup? = null
    override fun starting(description: Description?) {
        super.starting(description)
        cacheBackup = Cache.backup()
        Cache.clear()
    }

    override fun finished(description: Description?) {
        super.finished(description)
        val cacheBackup = cacheBackup ?: return
        Cache.restore(cacheBackup)
    }
}