Add Chronicle Map 3.8.0 Compatibility test

src/test/java/net/openhft/chronicle/map/ChronicleMap3_8FormatCompatibilityTest.java

@@ -0,0 +1,50 @@
+/*
+ *      Copyright (C) 2015  higherfrequencytrading.com
+ *
+ *      This program is free software: you can redistribute it and/or modify
+ *      it under the terms of the GNU Lesser General Public License as published by
+ *      the Free Software Foundation, either version 3 of the License.
+ *
+ *      This program is distributed in the hope that it will be useful,
+ *      but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *      MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *      GNU Lesser General Public License for more details.
+ *
+ *      You should have received a copy of the GNU Lesser General Public License
+ *      along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+package net.openhft.chronicle.map;
+
+import com.google.common.io.Files;
+import net.openhft.chronicle.set.Builder;
+import org.junit.Test;
+
+import java.io.File;
+import java.io.IOException;
+import java.net.URISyntaxException;
+import java.net.URL;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNull;
+
+public class ChronicleMap3_8FormatCompatibilityTest {
+
+    @Test
+    public void testChronicleMap3_8FormatCompatibility() throws URISyntaxException, IOException {
+        ClassLoader cl = Thread.currentThread().getContextClassLoader();
+        URL fileUrl = cl.getResource("chronicle-map-3-8-file.dat");
+        File file = new File(fileUrl.toURI());
+        File persistenceFile = Builder.getPersistenceFile();
+        Files.copy(file, persistenceFile);
+        try (ChronicleMap<Integer, String> map = ChronicleMap.of(Integer.class, String.class)
+                .averageValue("1")
+                .entries(1)
+                .createPersistedTo(persistenceFile)) {
+            assertEquals(1, map.size());
+            assertEquals("1", map.get(1));
+            assertNull(map.put(2, "2"));
+            assertEquals("2", map.remove(2));
+        }
+    }
+}