| /* |
| * Copyright (C) 2019 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.compatibility.common.util; |
| |
| import android.content.res.Resources; |
| import android.text.TextUtils; |
| import android.util.Log; |
| |
| import androidx.annotation.NonNull; |
| import androidx.annotation.Nullable; |
| |
| import org.junit.rules.TestRule; |
| import org.junit.runner.Description; |
| import org.junit.runners.model.Statement; |
| |
| /** |
| * Custom JUnit4 rule that does not run a test case if the device does not define the given system |
| * resource. |
| */ |
| public class RequiredSystemResourceRule implements TestRule { |
| |
| private static final String TAG = "RequiredSystemResourceRule"; |
| |
| @NonNull private final String mName; |
| private final boolean mHasResource; |
| |
| /** |
| * Creates a rule for the given system resource. |
| * |
| * @param resourceId resource per se |
| * @param name resource name used for debugging purposes |
| */ |
| public RequiredSystemResourceRule(@NonNull String name) { |
| mName = name; |
| mHasResource = !TextUtils.isEmpty(getSystemResource(name)); |
| } |
| |
| @Override |
| public Statement apply(Statement base, Description description) { |
| return new Statement() { |
| |
| @Override |
| public void evaluate() throws Throwable { |
| if (!mHasResource) { |
| Log.d(TAG, "skipping " |
| + description.getClassName() + "#" + description.getMethodName() |
| + " because device does not have system resource '" + mName + "'"); |
| return; |
| } |
| base.evaluate(); |
| } |
| }; |
| } |
| |
| /** |
| * Gets the given system resource. |
| */ |
| @Nullable |
| public static String getSystemResource(@NonNull String name) { |
| try { |
| final int resourceId = Resources.getSystem().getIdentifier(name, "string", "android"); |
| return Resources.getSystem().getString(resourceId); |
| } catch (Exception e) { |
| Log.e(TAG, "could not get value of resource '" + name + "': ", e); |
| } |
| return null; |
| } |
| |
| @Override |
| public String toString() { |
| return "RequiredSystemResourceRule[" + mName + "]"; |
| } |
| } |