Dirty fix of issue with CharSequence equivalence, for correct ChronicleMap.equals() and hashCode() impls

src/test/java/net/openhft/chronicle/map/CHMUseCasesTest.java

@@ -1309,7 +1309,6 @@ public class CHMUseCasesTest {
         valueA.limit(valueA.capacity());
     }
 
-    //@Ignore("HCOLL-268 JSON serialisation issue")
     @Test
     public void testByteBufferDirectByteBufferMap()
             throws ExecutionException, InterruptedException, IOException {
@@ -1340,25 +1339,19 @@ public class CHMUseCasesTest {
             map.put(key1, value1);
             mapChecks();
             final SerializableFunction<ByteBuffer, ByteBuffer> function =
-                    new SerializableFunction<ByteBuffer, ByteBuffer>() {
-                        @Override
-                        public ByteBuffer apply(ByteBuffer s) {
-                            ByteBuffer slice = s.slice();
-                            slice.limit(2);
-                            return slice;
-                        }
+                    s -> {
+                        ByteBuffer slice = s.slice();
+                        slice.limit(2);
+                        return slice;
                     };
             assertBBEquals(ByteBuffer.wrap(new byte[]{11, 11}), map.getMapped(key1, function));
             assertEquals(null, map.getMapped(key2, function));
             mapChecks();
             assertBBEquals(ByteBuffer.wrap(new byte[]{12, 10}),
-                    map.putMapped(key1, new UnaryOperator<ByteBuffer>() {
-                        @Override
-                        public ByteBuffer update(ByteBuffer s) {
-                            s.put(0, (byte) (s.get(0) + 1));
-                            s.put(1, (byte) (s.get(1) - 1));
-                            return function.apply(s);
-                        }
+                    map.putMapped(key1, s -> {
+                        s.put(0, (byte) (s.get(0) + 1));
+                        s.put(1, (byte) (s.get(1) - 1));
+                        return function.apply(s);
                     }));
 
             assertBBEquals(ByteBuffer.wrap(new byte[]{12, 10}), map.get(key1));

src/test/java/net/openhft/chronicle/map/ChronicleMapEqualsTest.java

@@ -0,0 +1,40 @@
+/*
+ * Copyright 2014 Higher Frequency Trading http://www.higherfrequencytrading.com
+ *
+ * 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 net.openhft.chronicle.map;
+
+import org.junit.Test;
+
+import java.util.HashMap;
+
+import static org.junit.Assert.assertTrue;
+
+public class ChronicleMapEqualsTest {
+
+    @Test
+    public void test() {
+        ChronicleMap<CharSequence, CharSequence> map =
+                ChronicleMapBuilder
+                        .of(CharSequence.class, CharSequence.class)
+                        .entries(100)
+                        .create();
+
+        HashMap<CharSequence, CharSequence> refMap = new HashMap<>();
+        refMap.put("a", "b");
+        map.putAll(refMap);
+        assertTrue(map.equals(refMap));
+    }
+}