Convert target branch link to use tree

app/assets/javascripts/vue_merge_request_widget/stores/mr_widget_store.js

@@ -47,7 +47,7 @@ export default class MergeRequestStore {
     this.sourceBranchPath = data.source_branch_path;
     this.sourceBranchLink = data.source_branch_with_namespace_link;
     this.mergeError = data.merge_error;
-    this.targetBranchPath = data.target_branch_commits_path;
+    this.targetBranchPath = data.target_branch_tree_path;
     this.conflictResolutionPath = data.conflict_resolution_path;
     this.cancelAutoMergePath = data.cancel_merge_when_pipeline_succeeds_path;
     this.removeWIPPath = data.remove_wip_path;

app/presenters/merge_request_presenter.rb

@@ -76,9 +76,9 @@ class MergeRequestPresenter < Gitlab::View::Presenter::Delegated
     end
   end
-  def target_branch_commits_path
+  def target_branch_tree_path
     if target_branch_exists?
-      project_commits_path(project, target_branch)
+      project_tree_path(project, target_branch)
     end
   end

app/serializers/merge_request_entity.rb

@@ -93,8 +93,8 @@ class MergeRequestEntity < IssuableEntity
   # Paths
   #
-  expose :target_branch_commits_path do |merge_request|
-    presenter(merge_request).target_branch_commits_path
+  expose :target_branch_tree_path do |merge_request|
+    presenter(merge_request).target_branch_tree_path
   end
   expose :new_blob_path do |merge_request|

spec/fixtures/api/schemas/entities/merge_request.json

@@ -74,7 +74,7 @@
       },
       "additionalProperties": false
     },
-    "target_branch_commits_path": { "type": "string" },
+    "target_branch_tree_path": { "type": "string" },
     "source_branch_path": { "type": "string" },
     "conflict_resolution_path": { "type": ["string", "null"] },
     "cancel_merge_when_pipeline_succeeds_path": { "type": "string" },

spec/presenters/merge_request_presenter_spec.rb

@@ -317,10 +317,10 @@ describe MergeRequestPresenter do
     end
   end
-  describe '#target_branch_commits_path' do
+  describe '#target_branch_tree_path' do
     subject do
       described_class.new(resource, current_user: user)
-        .target_branch_commits_path
+        .target_branch_tree_path
     end
     context 'when target branch exists' do
@@ -328,7 +328,7 @@ describe MergeRequestPresenter do
         allow(resource).to receive(:target_branch_exists?) { true }
         is_expected
-          .to eq("/#{resource.target_project.full_path}/commits/#{resource.target_branch}")
+          .to eq("/#{resource.target_project.full_path}/tree/#{resource.target_branch}")
       end
     end

spec/serializers/merge_request_entity_spec.rb

@@ -46,7 +46,7 @@ describe MergeRequestEntity do
                                :conflict_resolution_path,
                                :cancel_merge_when_pipeline_succeeds_path,
                                :create_issue_to_resolve_discussions_path,
-                               :source_branch_path, :target_branch_commits_path,
+                               :source_branch_path, :target_branch_tree_path,
                                :commits_count)
   end