test/java/util/Map/Defaults.java
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rev 6858 : 8004518: Add in-place operations to Map
8010122: Add defaults for ConcurrentMap operations to Map
Reviewed-by: darcy, briangoetz, mduigou, dholmes, ulfzibis
Contributed-by: Doug Lea <dl at cs.oswego.edu>, Henry Jen <henry.jen@oracle.com>, Akhil Arora <akhil.arora@oracle.com>, Peter Levart <peter.levart@gmail.com>
@@ -21,167 +21,574 @@
* questions.
*/
/*
* @test
- * @bug 8008785
- * @summary Ensure toArray() implementations return correct results.
+ * @bug 8010122 8004518
+ * @summary Test Map default methods
* @author Mike Duigou
+ * @run testng Defaults
*/
-import java.util.*;
+import java.util.AbstractMap;
+import java.util.AbstractSet;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
+import java.util.Collections;
+import java.util.EnumMap;
+import java.util.HashMap;
+import java.util.Hashtable;
+import java.util.IdentityHashMap;
+import java.util.Iterator;
+import java.util.LinkedHashMap;
+import java.util.Map;
+import java.util.TreeMap;
+import java.util.Set;
+import java.util.WeakHashMap;
+import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentSkipListMap;
+import java.util.function.Supplier;
-public class ToArray {
+import org.testng.annotations.Test;
+import org.testng.annotations.DataProvider;
+import static org.testng.Assert.fail;
+import static org.testng.Assert.assertEquals;
+import static org.testng.Assert.assertTrue;
+import static org.testng.Assert.assertFalse;
+import static org.testng.Assert.assertNull;
+import static org.testng.Assert.assertSame;
+
+public class Defaults {
+
+ @Test(dataProvider = "Nulls Map<IntegerEnum,String>")
+ public void testGetOrDefaultNulls(String description, Map<IntegerEnum, String> map) {
+ assertTrue(map.containsKey(null), "null key absent");
+ assertNull(map.get(null), "value not null");
+ assertSame(map.get(null), map.getOrDefault(null, EXTRA_VALUE), "values should match");
+ }
+
+ @Test(dataProvider = "Map<IntegerEnum,String>")
+ public void testGetOrDefault(String description, Map<IntegerEnum, String> map) {
+ assertTrue(map.containsKey(KEYS[1]), "expected key missing");
+ assertSame(map.get(KEYS[1]), map.getOrDefault(KEYS[1], EXTRA_VALUE), "values should match");
+ assertFalse(map.containsKey(EXTRA_KEY), "expected absent key");
+ assertSame(map.getOrDefault(EXTRA_KEY, EXTRA_VALUE), EXTRA_VALUE, "value not returned as default");
+ assertNull(map.getOrDefault(EXTRA_KEY, null), "null not returned as default");
+ }
+
+ @Test(dataProvider = "R/W Nulls Map<IntegerEnum,String>")
+ public void testPutIfAbsentNulls(String description, Map<IntegerEnum, String> map) {
+ assertTrue(map.containsKey(null), "null key absent");
+ assertNull(map.get(null), "value not null");
+ assertNull(map.putIfAbsent(null, EXTRA_VALUE), "previous not null");
+ assertTrue(map.containsKey(null), "null key absent");
+ assertSame(map.get(null), EXTRA_VALUE, "unexpected value");
+ assertSame(map.putIfAbsent(null, null), EXTRA_VALUE, "previous not expected value");
+ assertTrue(map.containsKey(null), "null key absent");
+ assertSame(map.get(null), EXTRA_VALUE, "unexpected value");
+ assertSame(map.remove(null), EXTRA_VALUE, "removed unexpected value");
+
+ assertFalse(map.containsKey(null), description + ": key present after remove");
+ assertNull(map.putIfAbsent(null, null), "previous not null");
+ assertTrue(map.containsKey(null), "null key absent");
+ assertNull(map.get(null), "value not null");
+ assertNull(map.putIfAbsent(null, EXTRA_VALUE), "previous not null");
+ assertSame(map.get(null), EXTRA_VALUE, "value not expected");
+ }
+
+ @Test(dataProvider = "R/W Map<IntegerEnum,String>")
+ public void testPutIfAbsent(String description, Map<IntegerEnum, String> map) {
+ assertTrue(map.containsKey(KEYS[1]));
+ Object expected = map.get(KEYS[1]);
+ assertTrue(null == expected || expected == VALUES[1]);
+ assertSame(map.putIfAbsent(KEYS[1], EXTRA_VALUE), expected);
+ assertSame(map.get(KEYS[1]), expected);
+
+ assertFalse(map.containsKey(EXTRA_KEY));
+ assertSame(map.putIfAbsent(EXTRA_KEY, EXTRA_VALUE), null);
+ assertSame(map.get(EXTRA_KEY), EXTRA_VALUE);
+ }
+
+ @Test(dataProvider = "Nulls Map<IntegerEnum,String>")
+ public void testForEach(String description, Map<IntegerEnum, String> map) {
+ IntegerEnum[] EACH_KEY = new IntegerEnum[map.size()];
+
+ map.forEach((k, v) -> {
+ int idx = (null == k) ? 0 : k.ordinal(); // substitute for index.
+ assertNull(EACH_KEY[idx]);
+ EACH_KEY[idx] = (idx == 0) ? KEYS[0] : k; // substitute for comparison.
+ assertSame(v, map.get(k));
+ });
+
+ assertEquals(KEYS, EACH_KEY);
+ }
+
+ @Test(dataProvider = "R/W Nulls Map<IntegerEnum,String>")
+ public static void testRemoveNulls(String description, Map<IntegerEnum, String> map) {
+ assertTrue(map.containsKey(null), "null key absent");
+ assertNull(map.get(null), "value not null");
+ assertFalse(map.remove(null, EXTRA_VALUE), description);
+ assertTrue(map.containsKey(null));
+ assertNull(map.get(null));
+ assertTrue(map.remove(null, null));
+ assertFalse(map.containsKey(null));
+ assertNull(map.get(null));
+ assertFalse(map.remove(null, null));
+ }
+
+ @Test(dataProvider = "R/W Map<IntegerEnum,String>")
+ public static void testRemove(String description, Map<IntegerEnum, String> map) {
+ assertTrue(map.containsKey(KEYS[1]));
+ Object expected = map.get(KEYS[1]);
+ assertTrue(null == expected || expected == VALUES[1]);
+ assertFalse(map.remove(KEYS[1], EXTRA_VALUE), description);
+ assertSame(map.get(KEYS[1]), expected);
+ assertTrue(map.remove(KEYS[1], expected));
+ assertNull(map.get(KEYS[1]));
+ assertFalse(map.remove(KEYS[1], expected));
+
+ assertFalse(map.containsKey(EXTRA_KEY));
+ assertFalse(map.remove(EXTRA_KEY, EXTRA_VALUE));
+ }
+
+ @Test(dataProvider = "R/W Nulls Map<IntegerEnum,String>")
+ public void testReplaceKVNulls(String description, Map<IntegerEnum, String> map) {
+ assertTrue(map.containsKey(null), "null key absent");
+ assertNull(map.get(null), "value not null");
+ assertSame(map.replace(null, EXTRA_VALUE), null);
+ assertSame(map.get(null), EXTRA_VALUE);
+ }
+
+ @Test(dataProvider = "R/W Map<IntegerEnum,String>")
+ public void testReplaceKV(String description, Map<IntegerEnum, String> map) {
+ assertTrue(map.containsKey(KEYS[1]));
+ Object expected = map.get(KEYS[1]);
+ assertTrue(null == expected || expected == VALUES[1]);
+ assertSame(map.replace(KEYS[1], EXTRA_VALUE), expected);
+ assertSame(map.get(KEYS[1]), EXTRA_VALUE);
+
+ assertFalse(map.containsKey(EXTRA_KEY));
+ assertNull(map.replace(EXTRA_KEY, EXTRA_VALUE));
+ assertFalse(map.containsKey(EXTRA_KEY));
+ assertNull(map.get(EXTRA_KEY));
+ assertNull(map.put(EXTRA_KEY, EXTRA_VALUE));
+ assertSame(map.get(EXTRA_KEY), EXTRA_VALUE);
+ assertSame(map.replace(EXTRA_KEY, (String)expected), EXTRA_VALUE);
+ assertSame(map.get(EXTRA_KEY), expected);
+ }
+
+ @Test(dataProvider = "R/W Nulls Map<IntegerEnum,String>")
+ public void testReplaceKVVNulls(String description, Map<IntegerEnum, String> map) {
+ assertTrue(map.containsKey(null), "null key absent");
+ assertNull(map.get(null), "value not null");
+ assertFalse(map.replace(null, EXTRA_VALUE, EXTRA_VALUE));
+ assertNull(map.get(null));
+ assertTrue(map.replace(null, null, EXTRA_VALUE));
+ assertSame(map.get(null), EXTRA_VALUE);
+ assertTrue(map.replace(null, EXTRA_VALUE, EXTRA_VALUE));
+ assertSame(map.get(null), EXTRA_VALUE);
+ }
+
+ @Test(dataProvider = "R/W Map<IntegerEnum,String>")
+ public void testReplaceKVV(String description, Map<IntegerEnum, String> map) {
+ assertTrue(map.containsKey(KEYS[1]));
+ Object expected = map.get(KEYS[1]);
+ assertTrue(null == expected || expected == VALUES[1]);
+ assertFalse(map.replace(KEYS[1], EXTRA_VALUE, EXTRA_VALUE));
+ assertSame(map.get(KEYS[1]), expected);
+ assertTrue(map.replace(KEYS[1], (String)expected, EXTRA_VALUE));
+ assertSame(map.get(KEYS[1]), EXTRA_VALUE);
+ assertTrue(map.replace(KEYS[1], EXTRA_VALUE, EXTRA_VALUE));
+ assertSame(map.get(KEYS[1]), EXTRA_VALUE);
+
+ assertFalse(map.containsKey(EXTRA_KEY));
+ assertFalse(map.replace(EXTRA_KEY, EXTRA_VALUE, EXTRA_VALUE));
+ assertFalse(map.containsKey(EXTRA_KEY));
+ assertNull(map.get(EXTRA_KEY));
+ assertNull(map.put(EXTRA_KEY, EXTRA_VALUE));
+ assertTrue(map.containsKey(EXTRA_KEY));
+ assertSame(map.get(EXTRA_KEY), EXTRA_VALUE);
+ assertTrue(map.replace(EXTRA_KEY, EXTRA_VALUE, EXTRA_VALUE));
+ assertSame(map.get(EXTRA_KEY), EXTRA_VALUE);
+ }
+
+ @Test(dataProvider = "R/W Nulls Map<IntegerEnum,String>")
+ public void testComputeIfAbsentNulls(String description, Map<IntegerEnum, String> map) {
+ assertTrue(map.containsKey(null), "null key absent");
+ assertNull(map.get(null), "value not null");
+ assertSame(map.computeIfAbsent(null, (k) -> EXTRA_VALUE), EXTRA_VALUE, description);
+ assertSame(map.get(null), EXTRA_VALUE, description);
+ }
+
+ @Test(dataProvider = "R/W Map<IntegerEnum,String>")
+ public void testComputeIfAbsent(String description, Map<IntegerEnum, String> map) {
+ assertTrue(map.containsKey(KEYS[1]));
+ Object expected = map.get(KEYS[1]);
+ assertTrue(null == expected || expected == VALUES[1], description + String.valueOf(expected));
+ expected = (null == expected) ? EXTRA_VALUE : expected;
+ assertSame(map.computeIfAbsent(KEYS[1], (k) -> EXTRA_VALUE), expected, description);
+ assertSame(map.get(KEYS[1]), expected, description);
+
+ assertFalse(map.containsKey(EXTRA_KEY));
+ assertSame(map.computeIfAbsent(EXTRA_KEY, (k) -> EXTRA_VALUE), EXTRA_VALUE);
+ assertSame(map.get(EXTRA_KEY), EXTRA_VALUE);
+ }
+
+ @Test(dataProvider = "R/W Nulls Map<IntegerEnum,String>")
+ public void testComputeIfPresentNulls(String description, Map<IntegerEnum, String> map) {
+ assertTrue(map.containsKey(null));
+ assertNull(map.get(null));
+ assertSame(map.computeIfPresent(null, (k, v) -> {
+ fail();
+ return EXTRA_VALUE;
+ }), null, description);
+ assertTrue(map.containsKey(null));
+ assertSame(map.get(null), null, description);
+ }
+
+ @Test(dataProvider = "R/W Map<IntegerEnum,String>")
+ public void testComputeIfPresent(String description, Map<IntegerEnum, String> map) {
+ assertTrue(map.containsKey(KEYS[1]));
+ Object value = map.get(KEYS[1]);
+ assertTrue(null == value || value == VALUES[1], description + String.valueOf(value));
+ Object expected = (null == value) ? null : EXTRA_VALUE;
+ assertSame(map.computeIfPresent(KEYS[1], (k, v) -> {
+ assertSame(v, value);
+ return EXTRA_VALUE;
+ }), expected, description);
+ assertSame(map.get(KEYS[1]), expected, description);
+ assertFalse(map.containsKey(EXTRA_KEY));
+ assertSame(map.computeIfPresent(EXTRA_KEY, (k, v) -> {
+ fail();
+ return EXTRA_VALUE;
+ }), null);
+ assertFalse(map.containsKey(EXTRA_KEY));
+ assertSame(map.get(EXTRA_KEY), null);
+ }
+
+ @Test(dataProvider = "R/W Nulls Map<IntegerEnum,String>")
+ public void testComputeNulls(String description, Map<IntegerEnum, String> map) {
+ assertTrue(map.containsKey(null), "null key absent");
+ assertNull(map.get(null), "value not null");
+ assertSame(map.compute(null, (k, v) -> {
+ assertSame(k, null);
+ assertNull(v);
+ return EXTRA_VALUE;
+ }), EXTRA_VALUE, description);
+ assertTrue(map.containsKey(null));
+ assertSame(map.get(null), EXTRA_VALUE, description);
+ assertSame(map.remove(null), EXTRA_VALUE, "removed value not expected");
+ assertFalse(map.containsKey(null), "null key present");
+ assertSame(map.compute(null, (k, v) -> {
+ assertSame(k, null);
+ assertNull(v);
+ return null;
+ }), null, description);
+ }
+
+ @Test(dataProvider = "R/W Map<IntegerEnum,String>")
+ public void testCompute(String description, Map<IntegerEnum, String> map) {
+ assertTrue(map.containsKey(KEYS[1]));
+ Object value = map.get(KEYS[1]);
+ assertTrue(null == value || value == VALUES[1], description + String.valueOf(value));
+ assertSame(map.compute(KEYS[1], (k, v) -> {
+ assertSame(k, KEYS[1]);
+ assertSame(v, value);
+ return EXTRA_VALUE;
+ }), EXTRA_VALUE, description);
+ assertSame(map.get(KEYS[1]), EXTRA_VALUE, description);
+ assertNull(map.compute(KEYS[1], (k, v) -> {
+ assertSame(v, EXTRA_VALUE);
+ return null;
+ }), description);
+ assertFalse(map.containsKey(KEYS[1]));
+
+ assertFalse(map.containsKey(EXTRA_KEY));
+ assertSame(map.compute(EXTRA_KEY, (k, v) -> {
+ assertNull(v);
+ return EXTRA_VALUE;
+ }), EXTRA_VALUE);
+ assertTrue(map.containsKey(EXTRA_KEY));
+ assertSame(map.get(EXTRA_KEY), EXTRA_VALUE);
+ }
+
+
+ @Test(dataProvider = "R/W Nulls Map<IntegerEnum,String>")
+ public void testMergeNulls(String description, Map<IntegerEnum, String> map) {
+ assertTrue(map.containsKey(null), "null key absent");
+ assertNull(map.get(null), "value not null");
+ assertSame(map.merge(null, EXTRA_VALUE, (v, vv) -> {
+ assertNull(v);
+ assertSame(vv, EXTRA_VALUE);
+ return vv;
+ }), EXTRA_VALUE, description);
+ assertTrue(map.containsKey(null));
+ assertSame(map.get(null), EXTRA_VALUE, description);
+ }
+
+ @Test(dataProvider = "R/W Map<IntegerEnum,String>")
+ public void testMerge(String description, Map<IntegerEnum, String> map) {
+ assertTrue(map.containsKey(KEYS[1]));
+ Object value = map.get(KEYS[1]);
+ assertTrue(null == value || value == VALUES[1], description + String.valueOf(value));
+ assertSame(map.merge(KEYS[1], EXTRA_VALUE, (v, vv) -> {
+ assertSame(v, value);
+ assertSame(vv, EXTRA_VALUE);
+ return vv;
+ }), EXTRA_VALUE, description);
+ assertSame(map.get(KEYS[1]), EXTRA_VALUE, description);
+ assertNull(map.merge(KEYS[1], EXTRA_VALUE, (v, vv) -> {
+ assertSame(v, EXTRA_VALUE);
+ assertSame(vv, EXTRA_VALUE);
+ return null;
+ }), description);
+ assertFalse(map.containsKey(KEYS[1]));
+
+ assertFalse(map.containsKey(EXTRA_KEY));
+ assertSame(map.merge(EXTRA_KEY, EXTRA_VALUE, (v, vv) -> {
+ assertNull(v);
+ assertSame(vv, EXTRA_VALUE);
+ return EXTRA_VALUE;
+ }), EXTRA_VALUE);
+ assertTrue(map.containsKey(EXTRA_KEY));
+ assertSame(map.get(EXTRA_KEY), EXTRA_VALUE);
+ }
+
+ enum IntegerEnum {
+
+ e0, e1, e2, e3, e4, e5, e6, e7, e8, e9,
+ e10, e11, e12, e13, e14, e15, e16, e17, e18, e19,
+ e20, e21, e22, e23, e24, e25, e26, e27, e28, e29,
+ e30, e31, e32, e33, e34, e35, e36, e37, e38, e39,
+ e40, e41, e42, e43, e44, e45, e46, e47, e48, e49,
+ e50, e51, e52, e53, e54, e55, e56, e57, e58, e59,
+ e60, e61, e62, e63, e64, e65, e66, e67, e68, e69,
+ e70, e71, e72, e73, e74, e75, e76, e77, e78, e79,
+ e80, e81, e82, e83, e84, e85, e86, e87, e88, e89,
+ e90, e91, e92, e93, e94, e95, e96, e97, e98, e99,
+ EXTRA_KEY;
+ public static final int SIZE = values().length;
+ };
+ private static final int TEST_SIZE = IntegerEnum.SIZE - 1;
/**
- * Number of elements per map.
+ * Realized keys ensure that there is always a hard ref to all test objects.
*/
- private static final int TEST_SIZE = 5000;
-
- private static void realMain(String[] args) throws Throwable {
- Map<Integer, Long>[] maps = (Map<Integer, Long>[]) new Map[]{
- new HashMap<>(),
- new Hashtable<>(),
- new IdentityHashMap<>(),
- new LinkedHashMap<>(),
- new TreeMap<>(),
- new WeakHashMap<>(),
- new ConcurrentHashMap<>(),
- new ConcurrentSkipListMap<>()
- };
+ private static final IntegerEnum[] KEYS = new IntegerEnum[TEST_SIZE];
+ /**
+ * Realized values ensure that there is always a hard ref to all test
+ * objects.
+ */
+ private static final String[] VALUES = new String[TEST_SIZE];
- // for each map type.
- for (Map<Integer, Long> map : maps) {
- try {
- testMap(map);
- } catch(Exception all) {
- unexpected("Failed for " + map.getClass().getName(), all);
- }
+ static {
+ IntegerEnum[] keys = IntegerEnum.values();
+ for (int each = 0; each < TEST_SIZE; each++) {
+ KEYS[each] = keys[each];
+ VALUES[each] = String.valueOf(each);
}
}
+ private static final IntegerEnum EXTRA_KEY = IntegerEnum.EXTRA_KEY;
+ private static final String EXTRA_VALUE = String.valueOf(TEST_SIZE);
- private static final Integer[] KEYS = new Integer[TEST_SIZE];
+ @DataProvider(name = "Map<IntegerEnum,String>", parallel = true)
+ public static Iterator<Object[]> allNullsMapProvider() {
+ return makeAllMaps().iterator();
+ }
- private static final Long[] VALUES = new Long[TEST_SIZE];
+ @DataProvider(name = "Nulls Map<IntegerEnum,String>", parallel = true)
+ public static Iterator<Object[]> allMapProvider() {
+ return makeRWMaps(true).iterator();
+ }
- static {
- for (int each = 0; each < TEST_SIZE; each++) {
- KEYS[each] = Integer.valueOf(each);
- VALUES[each] = Long.valueOf(each + TEST_SIZE);
+ @DataProvider(name = "R/W Map<IntegerEnum,String>", parallel = true)
+ public static Iterator<Object[]> rwMapProvider() {
+ return makeRWMapsNoNulls().iterator();
}
+
+ @DataProvider(name = "R/W Nulls Map<IntegerEnum,String>", parallel = true)
+ public static Iterator<Object[]> rwNullsMapProvider() {
+ return makeRWMaps(true).iterator();
}
+ private static Collection<Object[]> makeAllMapsNoNulls() {
+ Collection<Object[]> all = new ArrayList<>();
- private static void testMap(Map<Integer, Long> map) {
- System.out.println("Testing " + map.getClass());
- System.out.flush();
+ all.addAll(makeRWMaps(false));
+ all.addAll(makeRWNoNullsMaps());
+ all.addAll(makeROMaps(false));
- // Fill the map
- for (int each = 0; each < TEST_SIZE; each++) {
- map.put(KEYS[each], VALUES[each]);
+ return all;
}
- // check the keys
- Object[] keys = map.keySet().toArray();
- Arrays.sort(keys);
+ private static Collection<Object[]> makeRWMapsNoNulls() {
+ Collection<Object[]> all = new ArrayList<>();
+
+ all.addAll(makeRWMaps(false));
+ all.addAll(makeRWNoNullsMaps());
- for(int each = 0; each < TEST_SIZE; each++) {
- check( "unexpected key", keys[each] == KEYS[each]);
+ return all;
}
- // check the values
- Object[] values = map.values().toArray();
- Arrays.sort(values);
+ private static Collection<Object[]> makeAllMaps() {
+ Collection<Object[]> all = new ArrayList<>();
- for(int each = 0; each < TEST_SIZE; each++) {
- check( "unexpected value", values[each] == VALUES[each]);
+ all.addAll(makeROMaps(false));
+ all.addAll(makeRWMaps(false));
+ all.addAll(makeRWNoNullsMaps());
+ all.addAll(makeRWMaps(true));
+ all.addAll(makeROMaps(true));
+
+ return all;
}
- // check the entries
- Map.Entry<Integer,Long>[] entries = map.entrySet().toArray(new Map.Entry[TEST_SIZE]);
- Arrays.sort( entries,new Comparator<Map.Entry<Integer,Long>>() {
- public int compare(Map.Entry<Integer,Long> o1, Map.Entry<Integer,Long> o2) {
- return o1.getKey().compareTo(o2.getKey());
- }});
+ private static Collection<Object[]> makeAllRWMaps() {
+ Collection<Object[]> all = new ArrayList<>();
+
+ all.addAll(makeRWMaps(false));
+ all.addAll(makeRWNoNullsMaps());
+ all.addAll(makeRWMaps(true));
- for(int each = 0; each < TEST_SIZE; each++) {
- check( "unexpected entry", entries[each].getKey() == KEYS[each] && entries[each].getValue() == VALUES[each]);
+ return all;
}
+
+ private static Collection<Object[]> makeRWMaps(boolean nulls) {
+ return Arrays.asList(
+ new Object[]{"HashMap", makeMap(HashMap::new, nulls)},
+ new Object[]{"IdentityHashMap", makeMap(IdentityHashMap::new, nulls)},
+ new Object[]{"LinkedHashMap", makeMap(LinkedHashMap::new, nulls)},
+ new Object[]{"WeakHashMap", makeMap(WeakHashMap::new, nulls)},
+ new Object[]{"Collections.checkedMap(HashMap)", Collections.checkedMap(makeMap(HashMap::new, nulls), IntegerEnum.class, String.class)},
+ new Object[]{"Collections.synchronizedMap(HashMap)", Collections.synchronizedMap(makeMap(HashMap::new, nulls))},
+ new Object[]{"ExtendsAbstractMap", makeMap(ExtendsAbstractMap::new, nulls)});
}
- //--------------------- Infrastructure ---------------------------
- static volatile int passed = 0, failed = 0;
+ private static Collection<Object[]> makeRWNoNullsMaps() {
+ return Arrays.asList(
+ // null hostile
+ new Object[]{"EnumMap", makeMap(() -> new EnumMap(IntegerEnum.class), false)},
+ new Object[]{"Hashtable", makeMap(Hashtable::new, false)},
+ new Object[]{"TreeMap", makeMap(TreeMap::new, false)},
+ new Object[]{"ConcurrentHashMap", makeMap(ConcurrentHashMap::new, false)},
+ new Object[]{"ConcurrentSkipListMap", makeMap(ConcurrentSkipListMap::new, false)},
+ new Object[]{"Collections.checkedMap(ConcurrentHashMap)", Collections.checkedMap(makeMap(ConcurrentHashMap::new, false), IntegerEnum.class, String.class)},
+ new Object[]{"Collections.synchronizedMap(EnumMap)", Collections.synchronizedMap(makeMap(() -> new EnumMap(IntegerEnum.class), false))},
+ new Object[]{"ImplementsConcurrentMap", makeMap(ImplementsConcurrentMap::new, false)});
+ }
- static void pass() {
- passed++;
+ private static Collection<Object[]> makeROMaps(boolean nulls) {
+ return Arrays.asList(new Object[][]{
+ new Object[]{"Collections.unmodifiableMap(HashMap)", Collections.unmodifiableMap(makeMap(HashMap::new, nulls))}
+ });
}
- static void fail() {
- failed++;
- (new Error("Failure")).printStackTrace(System.err);
+ private static Map<IntegerEnum, String> makeMap(Supplier<Map<IntegerEnum, String>> supplier, boolean nulls) {
+ Map<IntegerEnum, String> result = supplier.get();
+
+ for (int each = 0; each < TEST_SIZE; each++) {
+ if (nulls) {
+ result.put((each == 0) ? null : KEYS[each], null);
+ } else {
+ result.put(KEYS[each], VALUES[each]);
+ }
}
- static void fail(String msg) {
- failed++;
- (new Error("Failure: " + msg)).printStackTrace(System.err);
+ return result;
}
- static void abort() {
- fail();
- System.exit(1);
+ public interface Thrower<T extends Throwable> {
+
+ public void run() throws T;
}
- static void abort(String msg) {
- fail(msg);
- System.exit(1);
+ public static <T extends Throwable> void assertThrows(Thrower<T> thrower, Class<T> throwable) {
+ assertThrows(thrower, throwable, null);
}
- static void unexpected(String msg, Throwable t) {
- System.err.println("Unexpected: " + msg);
- unexpected(t);
+ public static <T extends Throwable> void assertThrows(Thrower<T> thrower, Class<T> throwable, String message) {
+ Throwable result;
+ try {
+ thrower.run();
+ result = null;
+ } catch (Throwable caught) {
+ result = caught;
}
- static void unexpected(Throwable t) {
- failed++;
- t.printStackTrace(System.err);
+ assertInstance(result, throwable,
+ (null != message)
+ ? message
+ : "Failed to throw " + throwable.getCanonicalName());
}
- static void check(boolean cond) {
- if (cond) {
- pass();
- } else {
- fail();
+ public static <T> void assertInstance(T actual, Class<? extends T> expected) {
+ assertInstance(expected.isInstance(actual), null);
}
+
+ public static <T> void assertInstance(T actual, Class<? extends T> expected, String message) {
+ assertTrue(expected.isInstance(actual), message);
}
- static void check(String desc, boolean cond) {
- if (cond) {
- pass();
- } else {
- fail(desc);
+ /**
+ * A simple mutable map implementation that provides only default
+ * implementations of all methods. ie. none of the Map interface default
+ * methods have overridden implementations.
+ *
+ * @param <K> Type of keys
+ * @param <V> Type of values
+ */
+ public static class ExtendsAbstractMap<M extends Map<K,V>, K, V> extends AbstractMap<K, V> {
+
+ protected final M map;
+
+ public ExtendsAbstractMap() { this( (M) new HashMap<K,V>()); }
+
+ protected ExtendsAbstractMap(M map) { this.map = map; }
+
+ public Set<Map.Entry<K, V>> entrySet() {
+ return new AbstractSet<Map.Entry<K, V>>() {
+ public int size() {
+ return map.size();
}
+
+ public Iterator<Map.Entry<K,V>> iterator() {
+ final Iterator<Map.Entry<K,V>> source = map.entrySet().iterator();
+ return new Iterator<Map.Entry<K,V>>() {
+ public boolean hasNext() { return source.hasNext(); }
+ public Map.Entry<K,V> next() { return source.next(); }
+ public void remove() { source.remove(); }
+ };
}
- static void equal(Object x, Object y) {
- if (Objects.equals(x, y)) {
- pass();
- } else {
- fail(x + " not equal to " + y);
+ public boolean add(Map.Entry<K,V> e) {
+ return map.entrySet().add(e);
}
+ };
}
- public static void main(String[] args) throws Throwable {
- Thread.currentThread().setName(ToArray.class.getName());
-// Thread.currentThread().setPriority(Thread.MAX_PRIORITY);
- try {
- realMain(args);
- } catch (Throwable t) {
- unexpected(t);
+ public V put(K key, V value) {
+ return map.put(key, value);
}
-
- System.out.printf("%nPassed = %d, failed = %d%n%n", passed, failed);
- if (failed > 0) {
- throw new Error("Some tests failed");
}
+
+ /**
+ * A simple mutable concurrent map implementation that provides only default
+ * implementations of all methods. ie. none of the ConcurrentMap interface
+ * default methods have overridden implementations.
+ *
+ * @param <K> Type of keys
+ * @param <V> Type of values
+ */
+ public static class ImplementsConcurrentMap<K, V> extends ExtendsAbstractMap<ConcurrentMap<K,V>, K, V> implements ConcurrentMap<K,V> {
+ public ImplementsConcurrentMap() { super(new ConcurrentHashMap<K,V>()); }
+
+ // ConcurrentMap reabstracts these methods
+
+ public V replace(K k, V v) { return map.replace(k, v); };
+
+ public boolean replace(K k, V v, V vv) { return map.replace(k, v, vv); };
+
+ public boolean remove(Object k, Object v) { return map.remove(k, v); }
+
+ public V putIfAbsent(K k, V v) { return map.putIfAbsent(k, v); }
}
}