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/**
* Copyright (c) 2008, http://www.snakeyaml.org
*
* Licensed 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.yaml.snakeyaml.issues.issue73;
import java.util.HashSet;
import java.util.LinkedHashSet;
import java.util.Set;
import junit.framework.TestCase;
import org.yaml.snakeyaml.Util;
import org.yaml.snakeyaml.Yaml;
public class RecursiveSetTest extends TestCase {
public void testDumpException() {
Set<Object> set1 = new HashSet<Object>();
Set<Object> set2 = new HashSet<Object>();
set1.add(set2);
set2.add(set1);
Yaml yaml = new Yaml();
try {
yaml.dump(set1);
fail("Recursive sets are not supported.");
} catch (StackOverflowError e) {
assertEquals(null, e.getMessage());
}
}
public void testLoadException() {
String doc = Util.getLocalResource("issues/issue73-recursive4.txt");
// System.out.println(doc);
Yaml yaml = new Yaml();
try {
yaml.load(doc);
fail("Recursive sets are not supported.");
} catch (Exception e) {
assertTrue(e.getMessage(), e.getMessage().contains("Set cannot be recursive."));
}
}
/**
* XXX: sets can be recursive
*/
@SuppressWarnings("unchecked")
public void testLoadRecursiveTest() {
String doc = Util.getLocalResource("issues/issue73-recursive5.txt");
// System.out.println(doc);
Yaml yaml = new Yaml();
Bean1 obj = (Bean1) yaml.load(doc);
Set<Object> set = obj.getSet();
// System.out.println(set);
assertEquals(LinkedHashSet.class, set.getClass());
assertEquals("ID123", obj.getId());
assertEquals(3, set.size());
assertTrue(set.remove("zzz"));
assertTrue(set.remove("ccc"));
assertFalse(set.contains("111"));
try {
set.contains(set);
fail("Recursive set fails to provide a hashcode.");
} catch (StackOverflowError e) {
// ignore
}
//
Set<Object> self = (Set<Object>) set.iterator().next();
assertEquals(LinkedHashSet.class, self.getClass());
assertEquals(set, self);
assertSame(set, self);
assertEquals(1, set.size());
assertEquals(1, self.size());
set.add("111");
assertEquals(2, set.size());
assertEquals(2, self.size());
//
self.clear();
assertTrue(self.isEmpty());
assertTrue(set.isEmpty());
assertFalse("Now it should not be recursive any longer (no StackOverflowError).",
set.contains(set));
//
set.add("jjj");
assertEquals(1, set.size());
assertEquals(1, self.size());
}
public static class Bean1 {
private Set<Object> set;
private String id;
public Set<Object> getSet() {
return set;
}
public void setSet(Set<Object> set) {
this.set = set;
}
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
}
}
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