luni/src/test/java/libcore/java/lang/PackageTest.java

/*
 * Copyright (C) 2011 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.java.lang;

import dalvik.system.VMRuntime;
import java.util.Arrays;
import java.util.List;
import libcore.junit.junit3.TestCaseWithRules;
import libcore.junit.util.SwitchTargetSdkVersionRule;
import libcore.junit.util.SwitchTargetSdkVersionRule.TargetSdkVersion;
import org.junit.Rule;
import org.junit.rules.TestRule;

public final class PackageTest extends TestCaseWithRules {

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

    /** assign packages immediately so that Class.getPackage() calls cannot side-effect it */
    private static final List<Package> packages = Arrays.asList(Package.getPackages());

    public void test_getAnnotations() throws Exception {
        // Pre-ICS we crashed. To pass, the package-info and TestPackageAnnotation classes must be
        // on the classpath.
        assertEquals(1, getClass().getPackage().getAnnotations().length);
        assertEquals(1, getClass().getPackage().getDeclaredAnnotations().length);
    }

    public void testGetPackage() {
        Package libcoreJavaLang = Package.getPackage("libcore.java.lang");
        assertEquals("libcore.java.lang", libcoreJavaLang.getName());
        assertEquals(getClass().getPackage(), libcoreJavaLang);
    }

    // http://b/28057303
    @TargetSdkVersion(24)
    public void test_toString_targetSdkVersion_24() throws Exception {
        Package libcoreJavaLang = Package.getPackage("libcore.java.lang");
        assertEquals("package libcore.java.lang", libcoreJavaLang.toString());
    }

    // http://b/28057303
    @TargetSdkVersion(25)
    public void test_toString_targetSdkVersion_25() throws Exception {
        Package libcoreJavaLang = Package.getPackage("libcore.java.lang");
        assertEquals("package libcore.java.lang, Unknown, version 0.0", libcoreJavaLang.toString());
    }

    // http://b/5171136
    public void testGetPackages() {
        assertTrue(packages.contains(getClass().getPackage()));
    }
}