| /* |
| * Copyright 2013 Google Inc. |
| * |
| * 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.common.jimfs; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertTrue; |
| import static org.junit.Assert.fail; |
| |
| import com.google.common.collect.ImmutableList; |
| import com.google.common.collect.ImmutableSet; |
| import java.io.Closeable; |
| import java.io.IOException; |
| import java.nio.file.ClosedFileSystemException; |
| import java.util.List; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| /** |
| * Tests for {@link FileSystemState}. |
| * |
| * @author Colin Decker |
| */ |
| @RunWith(JUnit4.class) |
| public class FileSystemStateTest { |
| |
| private final TestRunnable onClose = new TestRunnable(); |
| private final FileSystemState state = new FileSystemState(onClose); |
| |
| @Test |
| public void testIsOpen() throws IOException { |
| assertTrue(state.isOpen()); |
| state.close(); |
| assertFalse(state.isOpen()); |
| } |
| |
| @Test |
| public void testCheckOpen() throws IOException { |
| state.checkOpen(); // does not throw |
| state.close(); |
| try { |
| state.checkOpen(); |
| fail(); |
| } catch (ClosedFileSystemException expected) { |
| } |
| } |
| |
| @Test |
| public void testClose_callsOnCloseRunnable() throws IOException { |
| assertEquals(0, onClose.runCount); |
| state.close(); |
| assertEquals(1, onClose.runCount); |
| } |
| |
| @Test |
| public void testClose_multipleTimesDoNothing() throws IOException { |
| state.close(); |
| assertEquals(1, onClose.runCount); |
| state.close(); |
| state.close(); |
| assertEquals(1, onClose.runCount); |
| } |
| |
| @Test |
| public void testClose_registeredResourceIsClosed() throws IOException { |
| TestCloseable resource = new TestCloseable(); |
| state.register(resource); |
| assertFalse(resource.closed); |
| state.close(); |
| assertTrue(resource.closed); |
| } |
| |
| @Test |
| public void testClose_unregisteredResourceIsNotClosed() throws IOException { |
| TestCloseable resource = new TestCloseable(); |
| state.register(resource); |
| assertFalse(resource.closed); |
| state.unregister(resource); |
| state.close(); |
| assertFalse(resource.closed); |
| } |
| |
| @Test |
| public void testClose_multipleRegisteredResourcesAreClosed() throws IOException { |
| List<TestCloseable> resources = |
| ImmutableList.of(new TestCloseable(), new TestCloseable(), new TestCloseable()); |
| for (TestCloseable resource : resources) { |
| state.register(resource); |
| assertFalse(resource.closed); |
| } |
| state.close(); |
| for (TestCloseable resource : resources) { |
| assertTrue(resource.closed); |
| } |
| } |
| |
| @Test |
| public void testClose_resourcesThatThrowOnClose() { |
| List<TestCloseable> resources = |
| ImmutableList.of( |
| new TestCloseable(), |
| new ThrowsOnClose("a"), |
| new TestCloseable(), |
| new ThrowsOnClose("b"), |
| new ThrowsOnClose("c"), |
| new TestCloseable(), |
| new TestCloseable()); |
| for (TestCloseable resource : resources) { |
| state.register(resource); |
| assertFalse(resource.closed); |
| } |
| |
| try { |
| state.close(); |
| fail(); |
| } catch (IOException expected) { |
| Throwable[] suppressed = expected.getSuppressed(); |
| assertEquals(2, suppressed.length); |
| ImmutableSet<String> messages = |
| ImmutableSet.of( |
| expected.getMessage(), suppressed[0].getMessage(), suppressed[1].getMessage()); |
| assertEquals(ImmutableSet.of("a", "b", "c"), messages); |
| } |
| |
| for (TestCloseable resource : resources) { |
| assertTrue(resource.closed); |
| } |
| } |
| |
| private static class TestCloseable implements Closeable { |
| |
| boolean closed = false; |
| |
| @Override |
| public void close() throws IOException { |
| closed = true; |
| } |
| } |
| |
| private static final class TestRunnable implements Runnable { |
| int runCount = 0; |
| |
| @Override |
| public void run() { |
| runCount++; |
| } |
| } |
| |
| private static class ThrowsOnClose extends TestCloseable { |
| |
| private final String string; |
| |
| private ThrowsOnClose(String string) { |
| this.string = string; |
| } |
| |
| @Override |
| public void close() throws IOException { |
| super.close(); |
| throw new IOException(string); |
| } |
| } |
| } |