test-rules/src/test/java/libcore/junit/util/SwitchTargetSdkVersionRuleTest.java

/*
 * 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 libcore.junit.util;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotEquals;

import dalvik.system.VMRuntime;
import libcore.junit.util.SwitchTargetSdkVersionRule.TargetSdkVersion;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.TestRule;
import org.junit.runner.RunWith;
import org.junit.runners.JUnit4;

/**
 * Tests for {@link SwitchTargetSdkVersionRule}.
 */
@RunWith(JUnit4.class)
public class SwitchTargetSdkVersionRuleTest {

  @Rule
  public TestRule switchTargetSdkVersionRule = SwitchTargetSdkVersionRule.getInstance();

  @Test
  @TargetSdkVersion(23)
  public void testRunningAsIfTargetedAtSDKVersion23() {
    assertEquals(23, VMRuntime.getRuntime().getTargetSdkVersion());
  }

  @Test
  public void testRunningAsIfTargetedAtCurrentSDKVersion() {
    assertNotEquals(23, VMRuntime.getRuntime().getTargetSdkVersion());
  }
}