HCOLL-208 Bug with acquireUsing

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

@@ -0,0 +1,74 @@
+package net.openhft.chronicle.map;
+
+import net.openhft.lang.model.DataValueClasses;
+import net.openhft.lang.model.constraints.MaxSize;
+import net.openhft.lang.values.IntValue;
+import org.junit.Ignore;
+import org.junit.Test;
+
+import java.io.File;
+import java.util.Map;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+
+public class DemoChronicleMapTest {
+
+    @Test
+    @Ignore
+    public void testMap() throws Exception {
+        File file = File.createTempFile("DummyOrders", ".test");
+        file.deleteOnExit();
+        int maxEntries = 1000;
+        ChronicleMap<IntValue, DemoOrderVOInterface> map = ChronicleMapBuilder
+                .of(IntValue.class, DemoOrderVOInterface.class)
+                .putReturnsNull(true)
+                .removeReturnsNull(true)
+                .entries(maxEntries)
+                .createPersistedTo(file);
+
+
+        IntValue key = DataValueClasses.newInstance(IntValue.class);
+
+        DemoOrderVOInterface value = DataValueClasses.newDirectReference(DemoOrderVOInterface.class);
+        DemoOrderVOInterface value2 = DataValueClasses.newDirectReference(DemoOrderVOInterface.class);
+
+        // Initially populate the map
+        for (int i = 0; i < maxEntries; i++) {
+            key.setValue(i);
+
+            map.acquireUsing(key, value);
+
+            // TODO Shouldn't throw an NPE, because acquire should set the value.
+            value.setSymbol("IBM-" + i);
+            value.addAtomicOrderQty(1000);
+
+            map.getUsing(key, value2);
+            assertEquals("IBM-" + i, value.getSymbol());
+            assertEquals(1000, value.getOrderQty(), 0.0);
+        }
+
+        for (Map.Entry<IntValue, DemoOrderVOInterface> entry : map.entrySet()) {
+
+            IntValue k = entry.getKey();
+            DemoOrderVOInterface v = entry.getValue();
+
+            System.out.println(String.format("Key %d %s", k.getValue(), v == null ? "<null>" : v.getSymbol()));
+            assertNotNull(v);
+        }
+    }
+}
+
+interface DemoOrderVOInterface {
+    public CharSequence getSymbol();
+//    public StringBuilder getUsingSymbol(StringBuilder sb);
+
+    public void setSymbol(@MaxSize(20) CharSequence symbol);
+
+    public double addAtomicOrderQty(double toAdd);
+
+    public double getOrderQty();
+
+    public void setOrderQty(double orderQty);
+
+}