Add test for update statement on synonym.

h2/src/main/org/h2/table/TableSynonym.java

@@ -53,6 +53,11 @@ public class TableSynonym extends Table {
         return getSynonymFor().getColumn(index);
     }
 
+    @Override
+    public Row getTemplateRow() {
+        return getSynonymFor().getTemplateRow();
+    }
+
     @Override
     public boolean lock(Session session, boolean exclusive, boolean forceLockEvenInMvcc) {
         return getSynonymFor().lock(session, exclusive, forceLockEvenInMvcc);

h2/src/test/org/h2/test/db/TestSynonymForTable.java

@@ -34,6 +34,7 @@ public class TestSynonymForTable extends TestBase {
         testSelectFromSynonym();
         testInsertIntoSynonym();
         testInsertWithColumnNameIntoSynonym();
+        testUpdate();
         testDeleteFromSynonym();
         testTruncateSynonym();
         testExistingTableName();
@@ -48,6 +49,19 @@ public class TestSynonymForTable extends TestBase {
         testDropSchema();
     }
 
+    private void testUpdate() throws SQLException {
+        Connection conn = getConnection("synonym");
+        createTableWithSynonym(conn);
+        insertIntoSynonym(conn, 25);
+
+        Statement stmnt = conn.createStatement();
+        assertEquals(1, stmnt.executeUpdate("UPDATE testsynonym set id = 30 WHERE id = 25"));
+
+        assertSynonymContains(conn, 30);
+
+        conn.close();
+    }
+
     private void testDropSchema() throws SQLException {
         Connection conn = getConnection("synonym");
         Statement stat = conn.createStatement();
@@ -58,6 +72,7 @@ public class TestSynonymForTable extends TestBase {
         stat.execute("DROP SCHEMA s1");
 
         assertThrows(JdbcSQLException.class, stat).execute("SELECT id FROM testsynonym");
+        conn.close();
     }
 
     private void testDropTable() throws SQLException  {