Pass: simpleTest => simple_test
Pass: easy => easy
Pass: HTML => html
Pass: simpleXML => simple_xml
Pass: PDFLoad => pdf_load
Pass: startMIDDLELast => start_middle_last
Pass: AString => a_string
Pass: Some4Numbers234 => some4_numbers234
Pass: TEST123String => test123_string
Pass: hello_world => hello_world
Pass: hello___world => hello___world
Pass: _hello_world_ => _hello_world_
Pass: HelloWorld => hello_world
Pass: helloWorldFoo => hello_world_foo
Pass: hello_World => hello_world
Pass: hello-world => hello-world
Pass: myHTMLFiLe => my_html_fi_le
Pass: aBaBaB => a_ba_ba_b
Pass: BaBaBa => ba_ba_ba
Pass: libC => lib_c