/* 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.harmony.tests.java.lang;
import java.util.HashMap;
import junit.framework.TestCase;
import org.apache.harmony.testframework.serialization.SerializationTest;
import tests.util.SerializationTester;
public class EnumTest extends TestCase {
enum Sample {
LARRY, MOE, CURLY
}
Sample larry = Sample.LARRY;
Sample moe = Sample.MOE;
enum Empty {
}
enum Bogus {
UNUSED
}
enum Color {
Red, Green, Blue {};
}
enum MockCloneEnum {
ONE;
public void callClone() throws CloneNotSupportedException {
super.clone();
}
}
/**
* java.lang.Enum#compareTo(java.lang.Enum)
*/
public void test_compareToLjava_lang_Enum() {
assertTrue(0 < Sample.MOE.compareTo(Sample.LARRY));
assertEquals(0, Sample.MOE.compareTo(Sample.MOE));
assertTrue(0 > Sample.MOE.compareTo(Sample.CURLY));
try {
Sample.MOE.compareTo((Sample) null);
fail("Should throw NullPointerException");
} catch (NullPointerException e) {
// Expected
}
}
/**
* java.lang.Enum#equals(Object)
*/
public void test_equalsLjava_lang_Object() {
assertFalse(moe.equals("bob"));
assertTrue(moe.equals(Sample.MOE));
assertFalse(Sample.LARRY.equals(Sample.CURLY));
assertTrue(Sample.LARRY.equals(larry));
assertFalse(Sample.CURLY.equals(null));
}
/**
* java.lang.Enum#getDeclaringClass()
*/
public void test_getDeclaringClass() {
assertEquals(Sample.class, moe.getDeclaringClass());
}
/**
* java.lang.Enum#hashCode()
*/
public void test_hashCode() {
assertEquals(moe.hashCode(), moe.hashCode());
}
/**
* java.lang.Enum#name()
*/
public void test_name() {
assertEquals("MOE", moe.name());
}
/**
* java.lang.Enum#ordinal()
*/
public void test_ordinal() {
assertEquals(0, larry.ordinal());
assertEquals(1, moe.ordinal());
assertEquals(2, Sample.CURLY.ordinal());
}
/**
* java.lang.Enum#toString()
*/
public void test_toString() {
assertTrue(moe.toString().equals("MOE"));
}
/**
* java.lang.Enum#valueOf(Class, String)
*/
public void test_valueOfLjava_lang_String() {
assertSame(Sample.CURLY, Sample.valueOf("CURLY"));
assertSame(Sample.LARRY, Sample.valueOf("LARRY"));
assertSame(moe, Sample.valueOf("MOE"));
try {
Sample.valueOf("non-existant");
fail("Expected an exception");
} catch (IllegalArgumentException e) {
// Expected
}
try {
Sample.valueOf(null);
fail("Should throw NullPointerException");
} catch (NullPointerException e) {
// May be caused by some compilers' code
} catch (IllegalArgumentException e) {
// other compilers will throw this
}
Sample s = Enum.valueOf(Sample.class, "CURLY");
assertSame(s, Sample.CURLY);
s = Enum.valueOf(Sample.class, "LARRY");
assertSame(larry, s);
s = Enum.valueOf(Sample.class, "MOE");
assertSame(s, moe);
try {
Enum.valueOf(Bogus.class, "MOE");
fail("Expected IllegalArgumentException");
} catch (IllegalArgumentException e) {
// Expected
}
try {
Enum.valueOf((Class<Sample>) null, "a string");
fail("Expected an exception");
} catch (NullPointerException e) {
// May be caused by some compilers' code
} catch (IllegalArgumentException e) {
// other compilers will throw this
}
try {
Enum.valueOf(Sample.class, null);
fail("Expected an exception");
} catch (NullPointerException e) {
// May be caused by some compilers' code
} catch (IllegalArgumentException e) {
// other compilers will throw this
}
try {
Enum.valueOf((Class<Sample>) null, (String) null);
fail("Expected an exception");
} catch (NullPointerException e) {
// May be caused by some compilers' code
} catch (IllegalArgumentException e) {
// other compilers will throw this
}
}
/**
* java.lang.Enum#values
*/
public void test_values() {
Sample[] myValues = Sample.values();
assertEquals(3, myValues.length);
assertEquals(Sample.LARRY, myValues[0]);
assertEquals(Sample.MOE, myValues[1]);
assertEquals(Sample.CURLY, myValues[2]);
assertEquals(0, Empty.values().length);
}
/**
* java.lang.Enum#clone()
*/
public void test_clone() {
try {
MockCloneEnum.ONE.callClone();
fail("Should throw CloneNotSupprotedException");
} catch (CloneNotSupportedException e1) {
// expected
}
}
public void test_compatibilitySerialization_inClass_Complex_Harmony() throws Exception {
// TODO migrate to the new testing framework
assertTrue(SerializationTester.assertCompabilityEquals(new MockEnum2(),
"serialization/org/apache/harmony/tests/java/lang/EnumTest.harmony.ser"));
}
/**
* serialization/deserialization compatibility.
*/
public void testSerializationSelf() throws Exception {
// test a map class that has enums.
// regression test for Harmony-1163
HashMap<Color, Integer> enumColorMap = new HashMap<Color, Integer>();
enumColorMap.put(Color.Red, 1);
enumColorMap.put(Color.Blue, 3);
Object[] testCases = { enumColorMap, Sample.CURLY };
SerializationTest.verifySelf(testCases);
// test a class that has enums as its fields.
MockEnum mock = new MockEnum();
MockEnum test = (MockEnum) SerializationTest.copySerializable(mock);
assertEquals(mock.i, test.i);
assertEquals(mock.str, test.str);
assertEquals(mock.samEnum, test.samEnum);
// test a class that has enums and a string of same name as its fields.
MockEnum2 mock2 = new MockEnum2();
MockEnum2 test2 = (MockEnum2) SerializationTest.copySerializable(mock2);
assertEquals(mock2.i, test2.i);
assertEquals(mock2.str, test2.str);
assertEquals(mock2.samEnum, test2.samEnum);
}
/**
* serialization/deserialization compatibility with RI.
*/
public void testSerializationCompatibility() throws Exception {
// regression test for Harmony-1163
HashMap<Color, Integer> enumColorMap = new HashMap<Color, Integer>();
enumColorMap.put(Color.Red, 1);
enumColorMap.put(Color.Blue, 3);
Object[] testCases = { Sample.CURLY, new MockEnum(),
// test a class that has enums and a string of same name as its fields.
new MockEnum2(),
// test a map class that has enums.
enumColorMap, };
SerializationTest.verifyGolden(this, testCases);
}
}