@Test
public void shouldNotDoubleQuoteDoubleQuotedString()
{

    String string1 = StringHelper.doubleQuoteIfNecessary("\"\"");
    assertThat(string1, is("\"\""));
    String string2 = StringHelper.doubleQuoteIfNecessary("\"hello\"");
    assertThat(string2, is("\"hello\""));
    String string3 = StringHelper.doubleQuoteIfNecessary("\"hello world\"");
    assertThat(string3, is("\"hello world\""));
}