Add tests for stream_data.maybe_get_stream_name().
Add tests for stream_data.maybe_get_stream_name().

eeshangarg/zulip,timabbott/zulip,rht/zulip,Galexrt/zulip,dhcrzf/zulip,andersk/zulip,rht/zulip,andersk/zulip,jackrzhang/zulip,punchagan/zulip,brockwhittaker/zulip,showell/zulip,shubhamdhama/zulip,zulip/zulip,rishig/zulip,jackrzhang/zulip,shubhamdhama/zulip,verma-varsha/zulip,brockwhittaker/zulip,tommyip/zulip,Galexrt/zulip,andersk/zulip,brockwhittaker/zulip,timabbott/zulip,rht/zulip,synicalsyntax/zulip,kou/zulip,rishig/zulip,tommyip/zulip,showell/zulip,dhcrzf/zulip,shubhamdhama/zulip,tommyip/zulip,punchagan/zulip,mahim97/zulip,Galexrt/zulip,showell/zulip,Galexrt/zulip,eeshangarg/zulip,punchagan/zulip,rht/zulip,mahim97/zulip,vaidap/zulip,dhcrzf/zulip,dhcrzf/zulip,synicalsyntax/zulip,zulip/zulip,showell/zulip,amanharitsh123/zulip,synicalsyntax/zulip,kou/zulip,showell/zulip,jackrzhang/zulip,rht/zulip,jackrzhang/zulip,timabbott/zulip,punchagan/zulip,brockwhittaker/zulip,vaidap/zulip,zulip/zulip,amanharitsh123/zulip,amanharitsh123/zulip,hackerkid/zulip,punchagan/zulip,brainwane/zulip,brainwane/zulip,synicalsyntax/zulip,hackerkid/zulip,eeshangarg/zulip,punchagan/zulip,vaidap/zulip,andersk/zulip,tommyip/zulip,rht/zulip,kou/zulip,synicalsyntax/zulip,verma-varsha/zulip,zulip/zulip,andersk/zulip,andersk/zulip,timabbott/zulip,Galexrt/zulip,mahim97/zulip,Galexrt/zulip,dhcrzf/zulip,rht/zulip,kou/zulip,hackerkid/zulip,dhcrzf/zulip,brainwane/zulip,brockwhittaker/zulip,kou/zulip,hackerkid/zulip,andersk/zulip,jackrzhang/zulip,shubhamdhama/zulip,amanharitsh123/zulip,verma-varsha/zulip,jackrzhang/zulip,tommyip/zulip,hackerkid/zulip,timabbott/zulip,synicalsyntax/zulip,rishig/zulip,shubhamdhama/zulip,brockwhittaker/zulip,vaidap/zulip,brainwane/zulip,brainwane/zulip,eeshangarg/zulip,Galexrt/zulip,mahim97/zulip,shubhamdhama/zulip,kou/zulip,verma-varsha/zulip,amanharitsh123/zulip,zulip/zulip,timabbott/zulip,vaidap/zulip,hackerkid/zulip,timabbott/zulip,hackerkid/zulip,rishig/zulip,showell/zulip,punchagan/zulip,eeshangarg/zulip,zulip/zulip,brainwane/zulip,verma-varsha/zulip,synicalsyntax/zulip,shubhamdhama/zulip,eeshangarg/zulip,zulip/zulip,mahim97/zulip,kou/zulip,vaidap/zulip,jackrzhang/zulip,tommyip/zulip,verma-varsha/zulip,tommyip/zulip,mahim97/zulip,dhcrzf/zulip,rishig/zulip,showell/zulip,rishig/zulip,amanharitsh123/zulip,eeshangarg/zulip,rishig/zulip,brainwane/zulip