| /* |
| * 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.cassandra.utils; |
| |
| import com.google.common.base.Throwables; |
| |
| import org.assertj.core.api.Condition; |
| |
| public class AssertionUtils |
| { |
| private AssertionUtils() |
| { |
| } |
| |
| /** |
| * When working with jvm-dtest the thrown error is in a different {@link ClassLoader} causing type checks |
| * to fail; this method relies on naming instead. |
| */ |
| public static Condition<Object> is(Class<?> klass) |
| { |
| String name = klass.getCanonicalName(); |
| return new Condition<Object>() { |
| @Override |
| public boolean matches(Object value) |
| { |
| return value.getClass().getCanonicalName().equals(name); |
| } |
| |
| @Override |
| public String toString() |
| { |
| return name; |
| } |
| }; |
| } |
| |
| public static <T extends Throwable> Condition<Throwable> isThrowable(Class<T> klass) |
| { |
| // org.assertj.core.api.AbstractAssert.is has <? super ? extends Throwable> which blocks <T>, so need to |
| // always return Throwable |
| return (Condition<Throwable>) (Condition<?>) is(klass); |
| } |
| |
| /** |
| * When working with jvm-dtest the thrown error is in a different {@link ClassLoader} causing type checks |
| * to fail; this method relies on naming instead. |
| * |
| * This method is different than {@link #is(Class)} as it tries to mimic instanceOf rather than equality. |
| */ |
| public static Condition<Object> isInstanceof(Class<?> klass) |
| { |
| String name = klass.getCanonicalName(); |
| return new Condition<Object>() { |
| @Override |
| public boolean matches(Object value) |
| { |
| if (value == null) |
| return false; |
| return matches(value.getClass()); |
| } |
| |
| private boolean matches(Class<?> input) |
| { |
| for (Class<?> klass = input; klass != null; klass = klass.getSuperclass()) |
| { |
| // extends |
| if (klass.getCanonicalName().equals(name)) |
| return true; |
| // implements |
| for (Class<?> i : klass.getInterfaces()) |
| { |
| if (matches(i)) |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| @Override |
| public String toString() |
| { |
| return name; |
| } |
| }; |
| } |
| |
| public static Condition<Throwable> rootCause(Condition<Throwable> other) |
| { |
| return new Condition<Throwable>() { |
| @Override |
| public boolean matches(Throwable value) |
| { |
| return other.matches(Throwables.getRootCause(value)); |
| } |
| |
| @Override |
| public String toString() |
| { |
| return "Root cause " + other; |
| } |
| }; |
| } |
| |
| public static Condition<Throwable> rootCauseIs(Class<? extends Throwable> klass) |
| { |
| return rootCause((Condition<Throwable>) (Condition<?>) is(klass)); |
| } |
| } |