Fix bugs in String.indexOf(c) TG-1846#1668

Merged

allredj merged 4 commits intodiffblue:developfrom

romainbrenguier:bugfix/string-index-of#TG-1846

Dec 20, 2017

Commits on Dec 14, 2017

Commits on Dec 15, 2017

Test for verification of the indexOf method
romainbrenguier
committed