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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;
import static org.junit.jupiter.api.Assertions.*;
import java.io.*;
import java.util.Arrays;
import java.util.List;
import org.junit.jupiter.api.Test;
// Tests that declaring fields in different order (esp. when they reference each other) generates
// identical code
public class TestDefinitionOrder {
@Test
public void testDefinitionOrder() throws Exception {
List<String> filenames = Arrays.asList("Parent.java", "Child.java", "MyEnum.java");
for (String fn : filenames) {
String fnA = "definition-order-test/a/" + fn;
String fnB = "definition-order-test/b/" + fn;
try (InputStream isA = TestDefinitionOrder.class.getClassLoader().getResourceAsStream(fnA);
InputStream isB = TestDefinitionOrder.class.getClassLoader().getResourceAsStream(fnB)) {
assertNotNull(isA, "Resource not found: " + fnA);
assertNotNull(isB, "Resource not found: " + fnB);
int hashA = Arrays.hashCode(readAllBytes(isA));
assertEquals(
hashA,
Arrays.hashCode(readAllBytes(isB)),
String.format("Generated Java files %s and %s differ", fnA, fnB));
}
}
}
// TODO Use InputStream.readAllBytes post-Java8
private byte[] readAllBytes(InputStream is) throws IOException {
ByteArrayOutputStream os = new ByteArrayOutputStream();
byte[] buff = new byte[1024];
int bytesRead;
while ((bytesRead = is.read(buff, 0, buff.length)) != -1) {
os.write(buff, 0, bytesRead);
}
return os.toByteArray();
}
}
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