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/*
* 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.thrift.partial;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
public final class ExceptionAsserts {
private ExceptionAsserts() {}
@FunctionalInterface
public interface CodeThatMayThrow {
void run() throws Exception;
}
/**
* Asserts that the given code throws an exception of the given type
* and that the exception message contains the given sub-message.
*
* Usage:
*
* ExceptionAsserts.assertThrows(
* IllegalArgumentException.class,
* "'nullArg' must not be null",
* () -> Preconditions.checkNotNull(null, "nullArg"));
*
* Note: JUnit 5 has similar functionality but it will be a long time before
* we move to that framework because of significant differences and lack of
* backward compatibility for some JUnit rules.
*/
public static <E extends Exception> void assertThrows(
Class<E> expectedExceptionClass,
String partialMessage,
CodeThatMayThrow code) {
Exception thrownException = null;
try {
code.run();
} catch (Exception e) {
if (expectedExceptionClass.isAssignableFrom(e.getClass())) {
thrownException = e;
if (partialMessage != null) {
String msg = e.getMessage();
assertNotNull(
String.format("Exception message is null, expected to contain: '%s'", partialMessage),
msg);
assertTrue(
String.format("Exception message '%s' does not contain: '%s'", msg, partialMessage),
msg.contains(partialMessage));
}
} else {
fail(String.format(
"Expected exception of type %s but got %s",
expectedExceptionClass.getName(),
e.getClass().getName()));
}
}
if (thrownException == null) {
fail(String.format(
"Expected exception of type %s but got none",
expectedExceptionClass.getName()));
}
}
public static <E extends Exception> void assertThrows(
Class<E> expectedExceptionClass,
CodeThatMayThrow code) {
assertThrows(expectedExceptionClass, null, code);
}
}
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