1/*
2 * Copyright (C) 2015 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17package vogar.android;
18
19import junit.framework.AssertionFailedError;
20import org.junit.rules.TestRule;
21import org.junit.runner.Description;
22import org.junit.runners.model.Statement;
23
24/**
25 * Obtains test specific arguments from the {@link VogarArgs} annotation on the test and makes them
26 * available to the test itself.
27 *
28 * @see VogarArgs
29 */
30public class VogarArgsRule implements TestRule {
31
32    private String[] testSpecificArgs = null;
33
34    @Override
35    public Statement apply(Statement base, Description description) {
36        VogarArgs vogarArgs = description.getAnnotation(VogarArgs.class);
37        if (vogarArgs == null) {
38            throw new AssertionFailedError("Must specify @" + VogarArgs.class.getSimpleName());
39        } else {
40            this.testSpecificArgs = vogarArgs.value();
41        }
42        return base;
43    }
44
45    public String[] getTestSpecificArgs() {
46        return testSpecificArgs;
47    }
48}
49