cmd/go: add missing tests
cmd/go: add missing tests

These changes to test.bash were intended to be submitted with CL 6941058, but were accidentally excluded from the original CL.

R=golang-dev
CC=golang-dev
https://codereview.appspot.com/7232043

pombredanne/go-deleteme,dsriram/golang,dsriram/golang,dsriram/golang,tv42/old-go,gnanderson/go,apparentlymart/golang,apparentlymart/golang,dsriram/golang,gnanderson/go,tv42/old-go,gnanderson/go,gnanderson/go,gnanderson/go,pombredanne/go-deleteme,dsriram/golang,dsriram/golang,tv42/old-go,apparentlymart/golang,apparentlymart/golang,pombredanne/go-deleteme,gnanderson/go,tv42/old-go,apparentlymart/golang,pombredanne/go-deleteme,dsriram/golang,tv42/old-go,pombredanne/go-deleteme,gnanderson/go,tv42/old-go,pombredanne/go-deleteme,apparentlymart/golang,tv42/old-go,apparentlymart/golang,pombredanne/go-deleteme