added test for partially committing a new file
added test for partially committing a new file

shiftkey/desktop,shiftkey/desktop,desktop/desktop,hjobrien/desktop,gengjiawen/desktop,gengjiawen/desktop,say25/desktop,artivilla/desktop,j-f1/forked-desktop,j-f1/forked-desktop,desktop/desktop,artivilla/desktop,kactus-io/kactus,desktop/desktop,BugTesterTest/desktops,BugTesterTest/desktops,desktop/desktop,say25/desktop,gengjiawen/desktop,gengjiawen/desktop,say25/desktop,hjobrien/desktop,kactus-io/kactus,kactus-io/kactus,artivilla/desktop,j-f1/forked-desktop,kactus-io/kactus,shiftkey/desktop,say25/desktop,hjobrien/desktop,hjobrien/desktop,j-f1/forked-desktop,BugTesterTest/desktops,BugTesterTest/desktops,shiftkey/desktop,artivilla/desktop