tests: Check whether body include multiple strings in _test_cases.
tests: Check whether body include multiple strings in _test_cases.

timabbott/zulip,punchagan/zulip,synicalsyntax/zulip,eeshangarg/zulip,zulip/zulip,hackerkid/zulip,shubhamdhama/zulip,showell/zulip,punchagan/zulip,andersk/zulip,rht/zulip,punchagan/zulip,eeshangarg/zulip,shubhamdhama/zulip,brainwane/zulip,timabbott/zulip,andersk/zulip,showell/zulip,showell/zulip,showell/zulip,andersk/zulip,timabbott/zulip,zulip/zulip,synicalsyntax/zulip,eeshangarg/zulip,rht/zulip,shubhamdhama/zulip,synicalsyntax/zulip,timabbott/zulip,brainwane/zulip,zulip/zulip,shubhamdhama/zulip,rht/zulip,eeshangarg/zulip,synicalsyntax/zulip,andersk/zulip,andersk/zulip,timabbott/zulip,andersk/zulip,hackerkid/zulip,timabbott/zulip,brainwane/zulip,hackerkid/zulip,shubhamdhama/zulip,andersk/zulip,synicalsyntax/zulip,timabbott/zulip,hackerkid/zulip,punchagan/zulip,showell/zulip,brainwane/zulip,shubhamdhama/zulip,shubhamdhama/zulip,brainwane/zulip,kou/zulip,synicalsyntax/zulip,eeshangarg/zulip,rht/zulip,eeshangarg/zulip,showell/zulip,showell/zulip,kou/zulip,punchagan/zulip,brainwane/zulip,kou/zulip,zulip/zulip,zulip/zulip,kou/zulip,rht/zulip,eeshangarg/zulip,hackerkid/zulip,synicalsyntax/zulip,kou/zulip,rht/zulip,zulip/zulip,punchagan/zulip,kou/zulip,zulip/zulip,hackerkid/zulip,hackerkid/zulip,brainwane/zulip,rht/zulip,punchagan/zulip,kou/zulip