mockrunner jdbc - no columns/rows in result set

I try to set up a test with mockrunner for the first time. The connection is established, but I only get an empty result set.

The mocking code looks something like this; I get the data from a csv file.

StatementResultSetHandler statementHandler = getJDBCMockObjectFactory()
        .getMockConnection().getStatementResultSetHandler();
URL stmtObjectsUrl = this.getClass().getResource("stmtOb.csv");
FileResultSetFactory factory = new FileResultSetFactory(stmtObjectsUrl.getFile());
factory.setFirstLineContainsColumnNames(true);
MockResultSet result = statementHandler.createResultSet(
        "stmtObjects", factory);
setUseRegularExpressions(true);
statementHandler.prepareResultSet("SELECT.*", result);

The csv file looks like this:

"OBJECT_NAME"   "OBJECT_TYPE"
"ABC"   "TRIGGER"
"DEF"   "TRIGGER"

As I have no idea where the problem is and the test is rather complex, I tried to reduce the test. I simply execute the method I want to test and then call getExecutedSQLStatements(), to see the statements I want to intercept with MockResultSet.prepareResultSet(). Even this does not work as expected. I only get an empty list, even though I am quite certain that the executed method did execute an SQL statement, as I print out the (empty) resultset inside the tested method after executing the query.

public class ExtractDataTest extends BasicJDBCTestCaseAdapter {
    final String DBCONN_USER = "a";
    final String DBCONN_PASSWORD = "b";
    final String DBCONN_URL = "c";
    @Before
    public void setUp() throws Exception {
        Map<String, String> environmentVars = new HashMap<String, String>();
        environmentVars .put("DBCONN_USER", DBCONN_USER);
        environmentVars.put("DBCONN_PASSWORD", DBCONN_PASSWORD);
        environmentVars.put("DBCONN_URL", DBCONN_URL);
        Environment.setEnv(environmentVars);
        super.setUp();
    /**
     * Recreate the values of the original environment variables inside the JVM.
     * @throws Exception 
     */
    @After
    public void tearDown() throws Exception {
    }
    @Test
    public void test() throws Exception {
        Constructor<ExtractPLSQL> c = ExtractPLSQL.class.getDeclaredConstructor(String.class, String.class);
        c.setAccessible(true);
        Path tmpDir = Files.createTempDirectory("extract_plsql_tmp");
        ExtractPLSQL sut = c.newInstance(tmpDir.toAbsolutePath().toString(), "UTF-8");
        sut.extractAll();
        System.out.println(this.getExecutedSQLStatements());
    }
}