Moved stubs to mock package

src/test/java/com/zaxxer/hikari/mocks/StubConnection.java

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package com.zaxxer.hikari.performance;
+package com.zaxxer.hikari.mocks;
 
 import java.sql.Array;
 import java.sql.Blob;

src/test/java/com/zaxxer/hikari/mocks/StubDataSource.java

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package com.zaxxer.hikari.performance;
+package com.zaxxer.hikari.mocks;
 
 import java.io.PrintWriter;
 import java.sql.Connection;

src/test/java/com/zaxxer/hikari/mocks/StubDriver.java

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package com.zaxxer.hikari.performance;
+package com.zaxxer.hikari.mocks;
 
 import java.sql.Connection;
 import java.sql.Driver;

src/test/java/com/zaxxer/hikari/mocks/StubPreparedStatement.java

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package com.zaxxer.hikari.performance;
+package com.zaxxer.hikari.mocks;
 
 import java.io.InputStream;
 import java.io.Reader;

src/test/java/com/zaxxer/hikari/mocks/StubResultSet.java

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package com.zaxxer.hikari.performance;
+package com.zaxxer.hikari.mocks;
 
 import java.io.InputStream;
 import java.io.Reader;
@@ -78,7 +78,7 @@ public class StubResultSet implements ResultSet
     /** {@inheritDoc} */
     public String getString(int columnIndex) throws SQLException
     {
-        return null;
+        return "aString";
     }
 
     /** {@inheritDoc} */

src/test/java/com/zaxxer/hikari/mocks/StubStatement.java

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-package com.zaxxer.hikari.performance;
+package com.zaxxer.hikari.mocks;
 
 import java.sql.Connection;
 import java.sql.ResultSet;