package org.apache.lucene.util;
/**
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.
*/
import java.io.Closeable;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.StringWriter;
public class TestIOUtils extends LuceneTestCase {
static final class BrokenCloseable implements Closeable {
final int i;
public BrokenCloseable(int i) {
this.i = i;
}
// Not until Java6: @Override
public void close() throws IOException {
throw new IOException("TEST-IO-EXCEPTION-" + i);
}
}
static final class TestException extends Exception {
public TestException() {
super("BASE-EXCEPTION");
}
}
public void testSuppressedExceptions() {
if (!Constants.JRE_IS_MINIMUM_JAVA7) {
System.err.println("WARNING: TestIOUtils.testSuppressedExceptions: Full test coverage only with Java 7, as suppressed exception recording is not supported before.");
}
// test with prior exception
try {
final TestException t = new TestException();
IOUtils.closeWhileHandlingException(t, new BrokenCloseable(1), new BrokenCloseable(2));
} catch (TestException e1) {
assertEquals("BASE-EXCEPTION", e1.getMessage());
final StringWriter sw = new StringWriter();
final PrintWriter pw = new PrintWriter(sw);
e1.printStackTrace(pw);
pw.flush();
final String trace = sw.toString();
if (VERBOSE) {
System.out.println("TestIOUtils.testSuppressedExceptions: Thrown Exception stack trace:");
System.out.println(trace);
}
if (Constants.JRE_IS_MINIMUM_JAVA7) {
assertTrue("Stack trace does not contain first suppressed Exception: " + trace,
trace.contains("java.io.IOException: TEST-IO-EXCEPTION-1"));
assertTrue("Stack trace does not contain second suppressed Exception: " + trace,
trace.contains("java.io.IOException: TEST-IO-EXCEPTION-2"));
}
} catch (IOException e2) {
fail("IOException should not be thrown here");
}
// test without prior exception
try {
IOUtils.closeWhileHandlingException((TestException) null, new BrokenCloseable(1), new BrokenCloseable(2));
} catch (TestException e1) {
fail("TestException should not be thrown here");
} catch (IOException e2) {
assertEquals("TEST-IO-EXCEPTION-1", e2.getMessage());
final StringWriter sw = new StringWriter();
final PrintWriter pw = new PrintWriter(sw);
e2.printStackTrace(pw);
pw.flush();
final String trace = sw.toString();
if (VERBOSE) {
System.out.println("TestIOUtils.testSuppressedExceptions: Thrown Exception stack trace:");
System.out.println(trace);
}
if (Constants.JRE_IS_MINIMUM_JAVA7) {
assertTrue("Stack trace does not contain suppressed Exception: " + trace,
trace.contains("java.io.IOException: TEST-IO-EXCEPTION-2"));
}
}
}
}