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/*
* Written by Doug Lea with assistance from members of JCP JSR-166
* Expert Group and released to the public domain, as explained at
* http://creativecommons.org/publicdomain/zero/1.0/
*/
package jsr166;
import junit.framework.*;
import java.util.*;
public class EntryTest extends JSR166TestCase {
static final String k1 = "1";
static final String v1 = "a";
static final String k2 = "2";
static final String v2 = "b";
/**
* A new SimpleEntry(k, v) holds k, v.
*/
public void testConstructor1() {
Map.Entry e = new AbstractMap.SimpleEntry(k1, v1);
assertEquals(k1, e.getKey());
assertEquals(v1, e.getValue());
}
/**
* A new SimpleImmutableEntry(k, v) holds k, v.
*/
public void testConstructor2() {
Map.Entry s = new AbstractMap.SimpleImmutableEntry(k1, v1);
assertEquals(k1, s.getKey());
assertEquals(v1, s.getValue());
}
/**
* A new SimpleEntry(entry(k, v)) holds k, v.
*/
public void testConstructor3() {
Map.Entry e2 = new AbstractMap.SimpleEntry(k1, v1);
Map.Entry e = new AbstractMap.SimpleEntry(e2);
assertEquals(k1, e.getKey());
assertEquals(v1, e.getValue());
}
/**
* A new SimpleImmutableEntry(entry(k, v)) holds k, v.
*/
public void testConstructor4() {
Map.Entry s2 = new AbstractMap.SimpleImmutableEntry(k1, v1);
Map.Entry s = new AbstractMap.SimpleImmutableEntry(s2);
assertEquals(k1, s.getKey());
assertEquals(v1, s.getValue());
}
/**
* Entries with same key-value pairs are equal and have same
* hashcodes
*/
public void testEquals() {
Map.Entry e2 = new AbstractMap.SimpleEntry(k1, v1);
Map.Entry e = new AbstractMap.SimpleEntry(e2);
Map.Entry s2 = new AbstractMap.SimpleImmutableEntry(k1, v1);
Map.Entry s = new AbstractMap.SimpleImmutableEntry(s2);
assertEquals(e2, e);
assertEquals(e2.hashCode(), e.hashCode());
assertEquals(s2, s);
assertEquals(s2.hashCode(), s.hashCode());
assertEquals(e2, s2);
assertEquals(e2.hashCode(), s2.hashCode());
assertEquals(e, s);
assertEquals(e.hashCode(), s.hashCode());
}
/**
* Entries with different key-value pairs are not equal
*/
public void testNotEquals() {
Map.Entry e2 = new AbstractMap.SimpleEntry(k1, v1);
Map.Entry e = new AbstractMap.SimpleEntry(k2, v1);
assertFalse(e2.equals(e));
e = new AbstractMap.SimpleEntry(k1, v2);
assertFalse(e2.equals(e));
e = new AbstractMap.SimpleEntry(k2, v2);
assertFalse(e2.equals(e));
Map.Entry s2 = new AbstractMap.SimpleImmutableEntry(k1, v1);
Map.Entry s = new AbstractMap.SimpleImmutableEntry(k2, v1);
assertFalse(s2.equals(s));
s = new AbstractMap.SimpleImmutableEntry(k1, v2);
assertFalse(s2.equals(s));
s = new AbstractMap.SimpleImmutableEntry(k2, v2);
assertFalse(s2.equals(s));
}
/**
* getValue returns last setValue for SimpleEntry
*/
public void testSetValue1() {
Map.Entry e2 = new AbstractMap.SimpleEntry(k1, v1);
Map.Entry e = new AbstractMap.SimpleEntry(e2);
assertEquals(k1, e.getKey());
assertEquals(v1, e.getValue());
e.setValue(k2);
assertEquals(k2, e.getValue());
assertFalse(e2.equals(e));
}
/**
* setValue for SimpleImmutableEntry throws UnsupportedOperationException
*/
public void testSetValue2() {
Map.Entry s2 = new AbstractMap.SimpleImmutableEntry(k1, v1);
Map.Entry s = new AbstractMap.SimpleImmutableEntry(s2);
assertEquals(k1, s.getKey());
assertEquals(v1, s.getValue());
try {
s.setValue(k2);
shouldThrow();
} catch (UnsupportedOperationException success) {}
}
}
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