@Test
public void testToString() 
{

    System.out.println(configuration.toString());
    
    String expected = "***** Configuration Details *****\n" +
                        "Data Source=mimic\n" +
                        "Destination Bucket=bucket1-stage\n" +
                        "Source Bucket=bucket1-raw\n" +
                        "SQL Bucket=sql-bucket\n" +
                        "File System=file\n" +
                        "Mappings=[\n" +
                        "***** Mapping Details *****\n" +
                        "Source Files=[file1.csv]\n" +
                        "SQL File=sql/sql1.sql\n" +
                        "Overflow Columns=[]\n" +
                        "*****************************, \n" +
                        "***** Mapping Details *****\n" +
                        "Source Files=[file1.csv, file2.csv]\n" +
                        "SQL File=sql2.sql\n" +
                        "Overflow Columns=[]\n" +
                        "*****************************, \n" +
                        "***** Mapping Details *****\n" +
                        "Source Files=[file1.csv]\n" +
                        "SQL File=sql2.sql\n" +
                        "Overflow Columns=[overflow1, overflow2]\n" +
                        "*****************************]\n" +
                        "*****************************";
    assertEquals(expected, configuration.toString());
}