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This commit is contained in:
Gary Gregory 2020-02-13 10:34:04 -05:00
parent f416d453af
commit 433229fd22
1 changed files with 126 additions and 127 deletions
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253
src/test/java/org/apache/commons/collections4/keyvalue/MultiKeyTest.java
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@ -36,6 +36,53 @@ import static org.junit.Assert.*;
*/
public class MultiKeyTest {
static class DerivedMultiKey<T> extends MultiKey<T> {
private static final long serialVersionUID = 1928896152249821416L;
public DerivedMultiKey(final T key1, final T key2) {
super(key1, key2);
}
public T getFirst() {
return getKey(0);
}
public T getSecond() {
return getKey(1);
}
}
static class SystemHashCodeSimulatingKey implements Serializable {
private static final long serialVersionUID = -1736147315703444603L;
private final String name;
private int hashCode = 1;
public SystemHashCodeSimulatingKey(final String name)
{
this.name = name;
}
@Override
public boolean equals(final Object obj)
{
return obj instanceof SystemHashCodeSimulatingKey
&& name.equals(((SystemHashCodeSimulatingKey)obj).name);
}
@Override
public int hashCode()
{
return hashCode;
}
private Object readResolve() {
hashCode=2; // simulate different hashCode after deserialization in another process
return this;
}
}
Integer ONE = Integer.valueOf(1);
Integer TWO = Integer.valueOf(2);
Integer THREE = Integer.valueOf(3);
@ -107,85 +154,6 @@ public class MultiKeyTest {
} catch (final NullPointerException ex) {}
}
@Test
public void testSize() {
assertEquals(2, new MultiKey<>(ONE, TWO).size());
assertEquals(2, new MultiKey<>(null, null).size());
assertEquals(3, new MultiKey<>(ONE, TWO, THREE).size());
assertEquals(3, new MultiKey<>(null, null, null).size());
assertEquals(4, new MultiKey<>(ONE, TWO, THREE, FOUR).size());
assertEquals(4, new MultiKey<>(null, null, null, null).size());
assertEquals(5, new MultiKey<>(ONE, TWO, THREE, FOUR, FIVE).size());
assertEquals(5, new MultiKey<>(null, null, null, null, null).size());
assertEquals(0, new MultiKey<>(new Object[] {}).size());
assertEquals(1, new MultiKey<>(new Integer[] { ONE }).size());
assertEquals(2, new MultiKey<>(new Integer[] { ONE, TWO }).size());
assertEquals(7, new MultiKey<>(new Integer[] { ONE, TWO, ONE, TWO, ONE, TWO, ONE }).size());
}
@Test
public void testGetIndexed() {
final MultiKey<Integer> mk = new MultiKey<>(ONE, TWO);
assertSame(ONE, mk.getKey(0));
assertSame(TWO, mk.getKey(1));
try {
mk.getKey(-1);
fail();
} catch (final IndexOutOfBoundsException ex) {}
try {
mk.getKey(2);
fail();
} catch (final IndexOutOfBoundsException ex) {}
}
@Test
public void testGetKeysSimpleConstructor() {
final MultiKey<Integer> mk = new MultiKey<>(ONE, TWO);
final Object[] array = mk.getKeys();
assertSame(ONE, array[0]);
assertSame(TWO, array[1]);
assertEquals(2, array.length);
}
@Test
public void testGetKeysArrayConstructorCloned() {
final Integer[] keys = new Integer[] { ONE, TWO };
final MultiKey<Integer> mk = new MultiKey<>(keys, true);
final Object[] array = mk.getKeys();
assertTrue(array != keys);
assertTrue(Arrays.equals(array, keys));
assertSame(ONE, array[0]);
assertSame(TWO, array[1]);
assertEquals(2, array.length);
}
@Test
public void testGetKeysArrayConstructorNonCloned() {
final Integer[] keys = new Integer[] { ONE, TWO };
final MultiKey<Integer> mk = new MultiKey<>(keys, false);
final Object[] array = mk.getKeys();
assertTrue(array != keys); // still not equal
assertTrue(Arrays.equals(array, keys));
assertSame(ONE, array[0]);
assertSame(TWO, array[1]);
assertEquals(2, array.length);
}
@Test
public void testHashCode() {
final MultiKey<Integer> mk1 = new MultiKey<>(ONE, TWO);
final MultiKey<Integer> mk2 = new MultiKey<>(ONE, TWO);
final MultiKey<Object> mk3 = new MultiKey<>(ONE, "TWO");
assertTrue(mk1.hashCode() == mk1.hashCode());
assertTrue(mk1.hashCode() == mk2.hashCode());
assertTrue(mk1.hashCode() != mk3.hashCode());
final int total = (0 ^ ONE.hashCode()) ^ TWO.hashCode();
assertEquals(total, mk1.hashCode());
}
@Test
public void testEquals() {
final MultiKey<Integer> mk1 = new MultiKey<>(ONE, TWO);
@ -199,36 +167,6 @@ public class MultiKeyTest {
assertFalse(mk1.equals(null));
}
static class SystemHashCodeSimulatingKey implements Serializable {
private static final long serialVersionUID = -1736147315703444603L;
private final String name;
private int hashCode = 1;
public SystemHashCodeSimulatingKey(final String name)
{
this.name = name;
}
@Override
public boolean equals(final Object obj)
{
return obj instanceof SystemHashCodeSimulatingKey
&& name.equals(((SystemHashCodeSimulatingKey)obj).name);
}
@Override
public int hashCode()
{
return hashCode;
}
private Object readResolve() {
hashCode=2; // simulate different hashCode after deserialization in another process
return this;
}
}
@Test
public void testEqualsAfterSerialization() throws IOException, ClassNotFoundException
{
@ -257,24 +195,6 @@ public class MultiKeyTest {
assertEquals(TWO, map2.get(mk2));
}
static class DerivedMultiKey<T> extends MultiKey<T> {
private static final long serialVersionUID = 1928896152249821416L;
public DerivedMultiKey(final T key1, final T key2) {
super(key1, key2);
}
public T getFirst() {
return getKey(0);
}
public T getSecond() {
return getKey(1);
}
}
@Test
public void testEqualsAfterSerializationOfDerivedClass() throws IOException, ClassNotFoundException
{
@ -295,4 +215,83 @@ public class MultiKeyTest {
assertEquals(mk.hashCode(), mk2.hashCode());
}
@Test
public void testGetIndexed() {
final MultiKey<Integer> mk = new MultiKey<>(ONE, TWO);
assertSame(ONE, mk.getKey(0));
assertSame(TWO, mk.getKey(1));
try {
mk.getKey(-1);
fail();
} catch (final IndexOutOfBoundsException ex) {}
try {
mk.getKey(2);
fail();
} catch (final IndexOutOfBoundsException ex) {}
}
@Test
public void testGetKeysArrayConstructorCloned() {
final Integer[] keys = new Integer[] { ONE, TWO };
final MultiKey<Integer> mk = new MultiKey<>(keys, true);
final Object[] array = mk.getKeys();
assertTrue(array != keys);
assertTrue(Arrays.equals(array, keys));
assertSame(ONE, array[0]);
assertSame(TWO, array[1]);
assertEquals(2, array.length);
}
@Test
public void testGetKeysArrayConstructorNonCloned() {
final Integer[] keys = new Integer[] { ONE, TWO };
final MultiKey<Integer> mk = new MultiKey<>(keys, false);
final Object[] array = mk.getKeys();
assertTrue(array != keys); // still not equal
assertTrue(Arrays.equals(array, keys));
assertSame(ONE, array[0]);
assertSame(TWO, array[1]);
assertEquals(2, array.length);
}
@Test
public void testGetKeysSimpleConstructor() {
final MultiKey<Integer> mk = new MultiKey<>(ONE, TWO);
final Object[] array = mk.getKeys();
assertSame(ONE, array[0]);
assertSame(TWO, array[1]);
assertEquals(2, array.length);
}
@Test
public void testHashCode() {
final MultiKey<Integer> mk1 = new MultiKey<>(ONE, TWO);
final MultiKey<Integer> mk2 = new MultiKey<>(ONE, TWO);
final MultiKey<Object> mk3 = new MultiKey<>(ONE, "TWO");
assertTrue(mk1.hashCode() == mk1.hashCode());
assertTrue(mk1.hashCode() == mk2.hashCode());
assertTrue(mk1.hashCode() != mk3.hashCode());
final int total = (0 ^ ONE.hashCode()) ^ TWO.hashCode();
assertEquals(total, mk1.hashCode());
}
@Test
public void testSize() {
assertEquals(2, new MultiKey<>(ONE, TWO).size());
assertEquals(2, new MultiKey<>(null, null).size());
assertEquals(3, new MultiKey<>(ONE, TWO, THREE).size());
assertEquals(3, new MultiKey<>(null, null, null).size());
assertEquals(4, new MultiKey<>(ONE, TWO, THREE, FOUR).size());
assertEquals(4, new MultiKey<>(null, null, null, null).size());
assertEquals(5, new MultiKey<>(ONE, TWO, THREE, FOUR, FIVE).size());
assertEquals(5, new MultiKey<>(null, null, null, null, null).size());
assertEquals(0, new MultiKey<>(new Object[] {}).size());
assertEquals(1, new MultiKey<>(new Integer[] { ONE }).size());
assertEquals(2, new MultiKey<>(new Integer[] { ONE, TWO }).size());
assertEquals(7, new MultiKey<>(new Integer[] { ONE, TWO, ONE, TWO, ONE, TWO, ONE }).size());
}
}