Move MR view methods from model to helper

Methods which decide which title to display
depending on the state better fit in helper
rather that in model

app/helpers/merge_requests_helper.rb

@@ -27,6 +27,16 @@ module MergeRequestsHelper
     classes.join(' ')
   end
 
+  def state_name_with_icon(merge_request)
+    if merge_request.merged?
+      [_("Merged"), "git-merge"]
+    elsif merge_request.closed?
+      [_("Closed"), "close"]
+    else
+      [_("Open"), "issue-open-m"]
+    end
+  end
+
   def ci_build_details_path(merge_request)
     build_url = merge_request.source_project.ci_service.build_page(merge_request.diff_head_sha, merge_request.source_branch)
     return unless build_url

app/models/merge_request.rb

@@ -1149,26 +1149,6 @@ class MergeRequest < ApplicationRecord
     actual_head_pipeline.environments
   end
 
-  def state_human_name
-    if merged?
-      "Merged"
-    elsif closed?
-      "Closed"
-    else
-      "Open"
-    end
-  end
-
-  def state_icon_name
-    if merged?
-      "git-merge"
-    elsif closed?
-      "close"
-    else
-      "issue-open-m"
-    end
-  end
-
   def fetch_ref!
     target_project.repository.fetch_source_branch!(source_project.repository, source_branch, ref_path)
   end

app/views/projects/merge_requests/_mr_title.html.haml

 - can_update_merge_request = can?(current_user, :update_merge_request, @merge_request)
 - can_reopen_merge_request = can?(current_user, :reopen_merge_request, @merge_request)
+- state_human_name, state_icon_name = state_name_with_icon(@merge_request)
 
 - if @merge_request.closed_without_fork?
   .alert.alert-danger
@@ -8,9 +9,9 @@
 .detail-page-header
   .detail-page-header-body
     .issuable-status-box.status-box{ class: status_box_class(@merge_request) }
-      = sprite_icon(@merge_request.state_icon_name, size: 16, css_class: 'd-block d-sm-none')
+      = sprite_icon(state_icon_name, size: 16, css_class: 'd-block d-sm-none')
       %span.d-none.d-sm-block
-        = @merge_request.state_human_name
+        = state_human_name
 
     .issuable-meta
       - if @merge_request.discussion_locked?

spec/helpers/merge_requests_helper_spec.rb

@@ -26,6 +26,31 @@ describe MergeRequestsHelper do
     end
   end
 
+  describe '#state_name_with_icon' do
+    using RSpec::Parameterized::TableSyntax
+
+    let(:merge_request) { MergeRequest.new }
+
+    where(:state, :expected_name, :expected_icon) do
+      :merged? | 'Merged' | 'git-merge'
+      :closed? | 'Closed' | 'close'
+      :opened? | 'Open' | 'issue-open-m'
+    end
+
+    with_them do
+      before do
+        allow(merge_request).to receive(state).and_return(true)
+      end
+
+      it 'returns name and icon' do
+        name, icon = helper.state_name_with_icon(merge_request)
+
+        expect(name).to eq(expected_name)
+        expect(icon).to eq(expected_icon)
+      end
+    end
+  end
+
   describe '#format_mr_branch_names' do
     describe 'within the same project' do
       let(:merge_request) { create(:merge_request) }