| // Copyright 2002 The Bazel Authors. All Rights Reserved. |
| // |
| // 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.google.testing.junit.runner.util; |
| |
| import static com.google.common.truth.Truth.assertThat; |
| import static com.google.common.truth.Truth.assertWithMessage; |
| import static org.junit.Assert.assertThrows; |
| |
| import java.security.Permission; |
| import org.junit.After; |
| import org.junit.Before; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| /** |
| * Test the GoogleTestSecurityManager. Most of the tests only works if the |
| * security manager is actually installed; otherwise they just |
| * pass without testing anything. |
| */ |
| @RunWith(JUnit4.class) |
| public class GoogleTestSecurityManagerTest { |
| private SecurityManager previousSecurityManager; |
| private GoogleTestSecurityManager installedSecurityManager; |
| |
| @Before |
| public void setUp() throws Exception { |
| previousSecurityManager = System.getSecurityManager(); |
| |
| // These tests assume that there isn't already a GoogleTestSecurityManager |
| // running. |
| GoogleTestSecurityManager.uninstallIfInstalled(); |
| } |
| |
| @After |
| public void tearDown() { |
| if (installedSecurityManager != null) { |
| installedSecurityManager.setEnabled(false); |
| } |
| if (System.getSecurityManager() != previousSecurityManager) { |
| System.setSecurityManager(previousSecurityManager); |
| } |
| } |
| |
| private void installTestSecurityManager() { |
| SecurityManager previousSecurityManager = System.getSecurityManager(); |
| assertThat(previousSecurityManager).isNull(); |
| |
| installedSecurityManager = new GoogleTestSecurityManager(); |
| System.setSecurityManager(installedSecurityManager); |
| } |
| |
| @Test |
| public void testExit() { |
| installTestSecurityManager(); |
| |
| assertThrows(SecurityException.class, () -> System.exit(1)); |
| } |
| |
| @Test |
| public void testSetSecurityManager() { |
| installTestSecurityManager(); |
| |
| assertThrows(SecurityException.class, () -> System.setSecurityManager(new SecurityManager())); |
| } |
| |
| /** |
| * test enabling/disabling the security manager. This test does not require |
| * that a GoogleTestSecurityManager be installed. |
| */ |
| @Test |
| public void testSecurityManagerEnabled() { |
| // create a security manager to use, but don't install it. |
| GoogleTestSecurityManager sm = new GoogleTestSecurityManager(); |
| |
| assertThat(sm.isEnabled()).isTrue(); |
| assertThrows(SecurityException.class, () -> sm.checkExit(0)); |
| |
| sm.setEnabled(false); |
| assertThat(!sm.isEnabled()).isTrue(); |
| |
| sm.checkExit(0); // should allow |
| |
| sm.setEnabled(true); |
| assertThat(sm.isEnabled()).isTrue(); |
| assertThrows(SecurityException.class, () -> sm.checkExit(0)); |
| } |
| |
| @Test |
| public void testUninstallIfInstalled_whenInstalled() { |
| installTestSecurityManager(); |
| GoogleTestSecurityManager.uninstallIfInstalled(); |
| |
| assertWithMessage("Security manager should be enabled") |
| .that(installedSecurityManager.isEnabled()) |
| .isTrue(); |
| assertWithMessage("Security manager should be uninstalled") |
| .that(System.getSecurityManager()) |
| .isNull(); |
| } |
| |
| @Test |
| public void testUninstallIfInstalled_whenNoSecurityManagerInstalled() { |
| GoogleTestSecurityManager.uninstallIfInstalled(); |
| |
| assertWithMessage("No security manager should be uninstalled") |
| .that(System.getSecurityManager()) |
| .isNull(); |
| } |
| |
| @Test |
| public void testUninstallIfInstalled_whenOtherSecurityManagerInstalled() { |
| PermissiveSecurityManager otherSecurityManager = new PermissiveSecurityManager(); |
| System.setSecurityManager(otherSecurityManager); |
| GoogleTestSecurityManager.uninstallIfInstalled(); |
| |
| assertThat(System.getSecurityManager()).isSameInstanceAs(otherSecurityManager); |
| System.setSecurityManager(null); |
| } |
| |
| /** |
| * Security manager that allows anything. |
| */ |
| private static class PermissiveSecurityManager extends SecurityManager { |
| @Override public void checkPermission(Permission p) { |
| return; |
| } |
| |
| @Override public void checkPermission(Permission p, java.lang.Object o) { |
| return; |
| } |
| } |
| } |