search: Add test case for searching for a link.
search: Add test case for searching for a link.

Fixes #2038

mahim97/zulip,punchagan/zulip,shubhamdhama/zulip,synicalsyntax/zulip,jrowan/zulip,mahim97/zulip,Galexrt/zulip,verma-varsha/zulip,shubhamdhama/zulip,hackerkid/zulip,rht/zulip,amanharitsh123/zulip,rht/zulip,vaidap/zulip,synicalsyntax/zulip,rht/zulip,kou/zulip,dhcrzf/zulip,mahim97/zulip,Galexrt/zulip,verma-varsha/zulip,zulip/zulip,dhcrzf/zulip,andersk/zulip,shubhamdhama/zulip,dhcrzf/zulip,amanharitsh123/zulip,vabs22/zulip,jackrzhang/zulip,brainwane/zulip,andersk/zulip,kou/zulip,eeshangarg/zulip,brockwhittaker/zulip,verma-varsha/zulip,timabbott/zulip,brainwane/zulip,andersk/zulip,zulip/zulip,brainwane/zulip,amanharitsh123/zulip,hackerkid/zulip,vabs22/zulip,rishig/zulip,showell/zulip,amanharitsh123/zulip,jackrzhang/zulip,brainwane/zulip,eeshangarg/zulip,rht/zulip,synicalsyntax/zulip,vaidap/zulip,hackerkid/zulip,brockwhittaker/zulip,rishig/zulip,vaidap/zulip,punchagan/zulip,rishig/zulip,verma-varsha/zulip,jrowan/zulip,shubhamdhama/zulip,showell/zulip,tommyip/zulip,punchagan/zulip,rishig/zulip,eeshangarg/zulip,andersk/zulip,showell/zulip,eeshangarg/zulip,shubhamdhama/zulip,brockwhittaker/zulip,tommyip/zulip,rishig/zulip,zulip/zulip,vabs22/zulip,vabs22/zulip,jackrzhang/zulip,synicalsyntax/zulip,andersk/zulip,brainwane/zulip,Galexrt/zulip,zulip/zulip,timabbott/zulip,timabbott/zulip,zulip/zulip,brockwhittaker/zulip,synicalsyntax/zulip,rht/zulip,jackrzhang/zulip,brockwhittaker/zulip,jrowan/zulip,eeshangarg/zulip,dhcrzf/zulip,jrowan/zulip,mahim97/zulip,rishig/zulip,jrowan/zulip,dhcrzf/zulip,rht/zulip,tommyip/zulip,Galexrt/zulip,hackerkid/zulip,timabbott/zulip,vaidap/zulip,punchagan/zulip,brainwane/zulip,kou/zulip,zulip/zulip,tommyip/zulip,tommyip/zulip,amanharitsh123/zulip,eeshangarg/zulip,vaidap/zulip,kou/zulip,punchagan/zulip,hackerkid/zulip,vabs22/zulip,kou/zulip,timabbott/zulip,brockwhittaker/zulip,shubhamdhama/zulip,dhcrzf/zulip,punchagan/zulip,Galexrt/zulip,jrowan/zulip,hackerkid/zulip,jackrzhang/zulip,andersk/zulip,kou/zulip,tommyip/zulip,timabbott/zulip,jackrzhang/zulip,dhcrzf/zulip,synicalsyntax/zulip,amanharitsh123/zulip,mahim97/zulip,verma-varsha/zulip,showell/zulip,vaidap/zulip,jackrzhang/zulip,punchagan/zulip,timabbott/zulip,andersk/zulip,synicalsyntax/zulip,mahim97/zulip,kou/zulip,shubhamdhama/zulip,hackerkid/zulip,rht/zulip,showell/zulip,Galexrt/zulip,eeshangarg/zulip,showell/zulip,tommyip/zulip,Galexrt/zulip,zulip/zulip,rishig/zulip,brainwane/zulip,vabs22/zulip,verma-varsha/zulip,showell/zulip