\#to_branch_name now uses the iid as postfix

Given the branch name 'mep-mep' with an iid being 1,
the current way, master's way, would yield a branch name of
1-mep-mep. The problem for larger projects however would be that
a developer might forget what iid the issue was.

When this developer would try to tab complete it would:
- Or result in 20+ branches possibly
- Or start with the wrong digit, try again with digit++
  - Would see 20 branches, repeat

Thus the obvious way of solving this is letting the dev tab complete
on the issue title, which is easier to remember.

1 files changed, 3 insertions, 3 deletions

diff --git a/spec/models/issue_spec.rb b/spec/models/issue_spec.rb
index 2ccdec1eeff..540a62eb1f8 100644
--- a/spec/models/issue_spec.rb
+++ b/spec/models/issue_spec.rb
@@ -131,7 +131,7 @@ describe Issue, models: true do
   end
 
   describe '#related_branches' do
-    it "should " do
+    it "selects the right branches" do
       allow(subject.project.repository).to receive(:branch_names).
                                     and_return(["mpempe", "#{subject.iid}mepmep", subject.to_branch_name])
 
@@ -151,10 +151,10 @@ describe Issue, models: true do
   end
 
   describe "#to_branch_name" do
-    let(:issue) { build(:issue, title: 'a' * 30) }
+    let(:issue) { create(:issue, title: 'a' * 30) }
 
     it "starts with the issue iid" do
-      expect(issue.to_branch_name).to match /\A#{issue.iid}-a+\z/
+      expect(issue.to_branch_name).to match /-#{issue.iid}\z/
     end
   end
 end