Merge branch '49061-submodule-helper-fix' into 'master'

Resolve "NoMethodError: undefined method `namespace' for nil:NilClass"

Closes #49061

See merge request gitlab-org/gitlab-ce!20615

app/helpers/submodule_helper.rb

@@ -8,7 +8,7 @@ module SubmoduleHelper
     url = repository.submodule_url_for(ref, submodule_item.path)
 
     if url == '.' || url == './'
-      url = File.join(Gitlab.config.gitlab.url, @project.full_path)
+      url = File.join(Gitlab.config.gitlab.url, repository.project.full_path)
     end
 
     if url =~ %r{([^/:]+)/([^/]+(?:\.git)?)\Z}
@@ -31,7 +31,7 @@ module SubmoduleHelper
         [namespace_project_path(namespace, project),
          namespace_project_tree_path(namespace, project, submodule_item.id)]
       elsif relative_self_url?(url)
-        relative_self_links(url, submodule_item.id)
+        relative_self_links(url, submodule_item.id, repository.project)
       elsif github_dot_com_url?(url)
         standard_links('github.com', namespace, project, submodule_item.id)
       elsif gitlab_dot_com_url?(url)
@@ -73,7 +73,7 @@ module SubmoduleHelper
     [base, [base, '/tree/', commit].join('')]
   end
 
-  def relative_self_links(url, commit)
+  def relative_self_links(url, commit, project)
     url.rstrip!
     # Map relative links to a namespace and project
     # For example:
@@ -85,7 +85,7 @@ module SubmoduleHelper
     namespace = components.pop.gsub(/^\.\.$/, '')
 
     if namespace.empty?
-      namespace = @project.namespace.full_path
+      namespace = project.namespace.full_path
     end
 
     begin

spec/helpers/submodule_helper_spec.rb

@@ -92,11 +92,10 @@ describe SubmoduleHelper do
     context 'in-repository submodule' do
       let(:group) { create(:group, name: "Master Project", path: "master-project") }
       let(:project) { create(:project, group: group) }
-      before do
-        self.instance_variable_set(:@project, project)
-      end
 
       it 'in-repository' do
+        allow(repo).to receive(:project).and_return(project)
+
         stub_url('./')
         expect(submodule_links(submodule_item)).to eq(["/master-project/#{project.path}", "/master-project/#{project.path}/tree/hash"])
       end
@@ -167,32 +166,28 @@ describe SubmoduleHelper do
       let(:project) { create(:project, group: group) }
       let(:commit_id) { sample_commit[:id] }
 
-      before do
-        self.instance_variable_set(:@project, project)
-      end
-
       it 'one level down' do
-        result = relative_self_links('../test.git', commit_id)
+        result = relative_self_links('../test.git', commit_id, project)
         expect(result).to eq(["/#{group.path}/test", "/#{group.path}/test/tree/#{commit_id}"])
       end
 
       it 'with trailing whitespace' do
-        result = relative_self_links('../test.git ', commit_id)
+        result = relative_self_links('../test.git ', commit_id, project)
         expect(result).to eq(["/#{group.path}/test", "/#{group.path}/test/tree/#{commit_id}"])
       end
 
       it 'two levels down' do
-        result = relative_self_links('../../test.git', commit_id)
+        result = relative_self_links('../../test.git', commit_id, project)
         expect(result).to eq(["/#{group.path}/test", "/#{group.path}/test/tree/#{commit_id}"])
       end
 
       it 'one level down with namespace and repo' do
-        result = relative_self_links('../foobar/test.git', commit_id)
+        result = relative_self_links('../foobar/test.git', commit_id, project)
         expect(result).to eq(["/foobar/test", "/foobar/test/tree/#{commit_id}"])
       end
 
       it 'two levels down with namespace and repo' do
-        result = relative_self_links('../foobar/baz/test.git', commit_id)
+        result = relative_self_links('../foobar/baz/test.git', commit_id, project)
         expect(result).to eq(["/baz/test", "/baz/test/tree/#{commit_id}"])
       end
 
@@ -201,7 +196,7 @@ describe SubmoduleHelper do
         let(:project) { create(:project, namespace: user.namespace) }
 
         it 'one level down with personal project' do
-          result = relative_self_links('../test.git', commit_id)
+          result = relative_self_links('../test.git', commit_id, project)
           expect(result).to eq(["/#{user.username}/test", "/#{user.username}/test/tree/#{commit_id}"])
         end
       end