| /* |
| * 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. |
| */ |
| package org.apache.johnzon.mapper; |
| |
| import org.junit.Assert; |
| |
| import java.io.ByteArrayOutputStream; |
| import java.lang.reflect.Type; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| |
| public class ExceptionAsserts { |
| |
| private final Throwable throwable; |
| |
| public ExceptionAsserts(final Throwable throwable) { |
| this.throwable = throwable; |
| } |
| |
| public <T extends Throwable> ExceptionAsserts assertInstanceOf(final Class<T> expected) { |
| final String message = String.format("%s not an instance of %s", |
| throwable.getClass().getSimpleName(), |
| expected.getSimpleName()); |
| assertTrue(message, expected.isAssignableFrom(throwable.getClass())); |
| return this; |
| } |
| |
| public ExceptionAsserts assertSame(final Throwable expected) { |
| Assert.assertSame(expected, throwable); |
| return this; |
| } |
| |
| public ExceptionAsserts assertCauseChain(final Throwable expected) { |
| Throwable cause = throwable; |
| while ((cause = cause.getCause()) != null) { |
| if (cause == expected) { |
| return this; |
| } |
| } |
| |
| throw new AssertionError("Throwable " + throwable.getClass().getSimpleName() + |
| " cause chain does not contain exception:" + expected.getMessage(), throwable); |
| } |
| |
| public ExceptionAsserts assertMessage(final String expected) { |
| assertEquals(expected, throwable.getMessage()); |
| return this; |
| } |
| |
| /** |
| * Useful for debugging tests |
| */ |
| public ExceptionAsserts printStackTrace() { |
| throwable.printStackTrace(); |
| return this; |
| } |
| |
| public Throwable getThrowable() { |
| return throwable; |
| } |
| |
| public static ExceptionAsserts from(final Runnable runnable) { |
| try { |
| |
| runnable.run(); |
| |
| throw new AssertionError("No exception occurred"); |
| |
| } catch (AssertionError assertionError) { |
| throw assertionError; |
| } catch (Throwable throwable) { |
| return new ExceptionAsserts(throwable); |
| } |
| } |
| |
| public static ExceptionAsserts fromMapperReadObject(final String json, final Type clazz) { |
| return from(() -> { |
| try (final Mapper mapper = new MapperBuilder().setSnippetMaxLength(20).build()) { |
| mapper.readObject(json, clazz); |
| } |
| }); |
| } |
| |
| public static ExceptionAsserts fromMapperWriteObject(final Object object) { |
| return from(() -> { |
| try (final Mapper mapper = new MapperBuilder().setSnippetMaxLength(20).build()) { |
| mapper.writeObject(object, new ByteArrayOutputStream()); |
| } |
| }); |
| } |
| } |