@Test
public void testExpressionIsValidSQl()
{

    assertFalse( expressionIsValidSQl( "10 == 10; delete from table" ) );
    assertFalse( expressionIsValidSQl( "select from table" ) );
    assertTrue( expressionIsValidSQl( "\"abcdef12345\" < 30" ) );
    assertTrue( expressionIsValidSQl( "\"abcdef12345\" >= \"bcdefg23456\"" ) );
    assertTrue( expressionIsValidSQl( "\"DO0v7fkhUNd\" > -30000 and \"DO0v7fkhUNd\" < 30000" ) );
    assertTrue( expressionIsValidSQl( "\"oZg33kd9taw\" == 'Female'" ) );
    assertTrue( expressionIsValidSQl( "\"oZg33kd9taw\" == 'Female' and \"qrur9Dvnyt5\" <= 5" ) );
}