Add coverage for untested DBHelper class

Added tests and provided coverage of 95%

Issue-ID: APPC-1394
Change-Id: Id63e78a72fe49d3a36af786192dc2359f3d3e334
Signed-off-by: Joss Armstrong <joss.armstrong@ericsson.com>

1 files changed, 89 insertions, 0 deletions

diff --git a/appc-dispatcher/appc-dispatcher-common/appc-data-access-lib/src/test/java/org/onap/appc/dao/util/helper/DBHelperTest.java b/appc-dispatcher/appc-dispatcher-common/appc-data-access-lib/src/test/java/org/onap/appc/dao/util/helper/DBHelperTest.java
new file mode 100644
index 000000000..ede27b62c
--- /dev/null
+++ b/appc-dispatcher/appc-dispatcher-common/appc-data-access-lib/src/test/java/org/onap/appc/dao/util/helper/DBHelperTest.java
@@ -0,0 +1,89 @@
+/*
+ * ============LICENSE_START=======================================================
+ * ONAP : APPC
+ * ================================================================================
+ * Copyright (C) 2019 Ericsson
+ * ================================================================================
+ * 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.
+ *
+ * ============LICENSE_END=========================================================
+ */
+
+package org.onap.appc.dao.util.helper;
+
+import org.junit.Test;
+import org.mockito.Mockito;
+import java.sql.Connection;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.sql.Statement;
+
+public class DBHelperTest {
+
+    @Test
+    public void testClose() throws SQLException {
+        ResultSet resultSet = Mockito.mock(ResultSet.class);
+        Statement statement = Mockito.mock(Statement.class);
+        Connection connection = Mockito.mock(Connection.class);
+        DBHelper.close(resultSet, statement, connection);
+        Mockito.verify(connection).close();
+    }
+
+    @Test
+    public void testCloseResultSet() throws SQLException {
+        ResultSet resultSet = Mockito.mock(ResultSet.class);
+        Mockito.doThrow(new SQLException()).when(resultSet).close();
+        DBHelper.closeResultSet(resultSet);
+        Mockito.verify(resultSet, Mockito.times(1)).close();
+    }
+
+    @Test
+    public void testCloseResultSetNull() throws SQLException {
+        ResultSet resultSet = Mockito.mock(ResultSet.class);
+        Mockito.doThrow(new SQLException()).when(resultSet).close();
+        DBHelper.closeResultSet(null);
+        Mockito.verify(resultSet, Mockito.times(0)).close();
+    }
+
+    @Test
+    public void testCloseStatement() throws SQLException {
+        Statement statement = Mockito.mock(Statement.class);
+        Mockito.doThrow(new SQLException()).when(statement).close();
+        DBHelper.closeStatement(statement);
+        Mockito.verify(statement, Mockito.times(1)).close();
+    }
+
+    @Test
+    public void testCloseStatementNull() throws SQLException {
+        Statement statement = Mockito.mock(Statement.class);
+        Mockito.doThrow(new SQLException()).when(statement).close();
+        DBHelper.closeStatement(null);
+        Mockito.verify(statement, Mockito.times(0)).close();
+    }
+
+    @Test
+    public void testCloseConnection() throws SQLException {
+        Connection connection = Mockito.mock(Connection.class);
+        Mockito.doThrow(new SQLException()).when(connection).close();
+        DBHelper.closeConnection(connection);
+        Mockito.verify(connection, Mockito.times(1)).close();
+    }
+
+    @Test
+    public void testCloseConnectionNull() throws SQLException {
+        Connection connection = Mockito.mock(Connection.class);
+        Mockito.doThrow(new SQLException()).when(connection).close();
+        DBHelper.closeConnection(null);
+        Mockito.verify(connection, Mockito.times(0)).close();
+    }
+}