hipchat import: Start adding tests.
hipchat import: Start adding tests.

These test are for the handling of HipChat
sender info.  The data formats are somewhat
inconsistent and sometimes require us to
generate "mirror" users, so this is potentially
fragile code if we don't cover it well.

shubhamdhama/zulip,timabbott/zulip,rht/zulip,zulip/zulip,punchagan/zulip,showell/zulip,showell/zulip,showell/zulip,synicalsyntax/zulip,jackrzhang/zulip,rht/zulip,hackerkid/zulip,tommyip/zulip,rht/zulip,shubhamdhama/zulip,shubhamdhama/zulip,eeshangarg/zulip,tommyip/zulip,tommyip/zulip,zulip/zulip,dhcrzf/zulip,eeshangarg/zulip,timabbott/zulip,synicalsyntax/zulip,rishig/zulip,brainwane/zulip,andersk/zulip,rishig/zulip,brainwane/zulip,jackrzhang/zulip,hackerkid/zulip,dhcrzf/zulip,jackrzhang/zulip,synicalsyntax/zulip,punchagan/zulip,shubhamdhama/zulip,synicalsyntax/zulip,timabbott/zulip,kou/zulip,eeshangarg/zulip,shubhamdhama/zulip,kou/zulip,jackrzhang/zulip,andersk/zulip,eeshangarg/zulip,punchagan/zulip,zulip/zulip,tommyip/zulip,showell/zulip,rishig/zulip,kou/zulip,eeshangarg/zulip,rht/zulip,synicalsyntax/zulip,synicalsyntax/zulip,rht/zulip,punchagan/zulip,brainwane/zulip,rishig/zulip,jackrzhang/zulip,tommyip/zulip,dhcrzf/zulip,zulip/zulip,andersk/zulip,hackerkid/zulip,jackrzhang/zulip,zulip/zulip,kou/zulip,kou/zulip,timabbott/zulip,kou/zulip,eeshangarg/zulip,timabbott/zulip,jackrzhang/zulip,synicalsyntax/zulip,brainwane/zulip,brainwane/zulip,showell/zulip,rishig/zulip,showell/zulip,andersk/zulip,dhcrzf/zulip,brainwane/zulip,punchagan/zulip,shubhamdhama/zulip,rishig/zulip,punchagan/zulip,shubhamdhama/zulip,dhcrzf/zulip,punchagan/zulip,rht/zulip,kou/zulip,timabbott/zulip,brainwane/zulip,showell/zulip,tommyip/zulip,eeshangarg/zulip,andersk/zulip,timabbott/zulip,hackerkid/zulip,hackerkid/zulip,zulip/zulip,dhcrzf/zulip,tommyip/zulip,rishig/zulip,dhcrzf/zulip,andersk/zulip,andersk/zulip,hackerkid/zulip,rht/zulip,zulip/zulip,hackerkid/zulip