Add Repository#xcode_project? method

app/models/repository.rb

@@ -37,7 +37,7 @@ class Repository
                       changelog license_blob license_key gitignore koding_yml
                       gitlab_ci_yml branch_names tag_names branch_count
                       tag_count avatar exists? root_ref has_visible_content?
-                      issue_template_names merge_request_template_names).freeze
+                      issue_template_names merge_request_template_names xcode_project?).freeze
 
   # Methods that use cache_method but only memoize the value
   MEMOIZED_CACHED_METHODS = %i(license).freeze
@@ -55,7 +55,8 @@ class Repository
     gitlab_ci: :gitlab_ci_yml,
     avatar: :avatar,
     issue_template: :issue_template_names,
-    merge_request_template: :merge_request_template_names
+    merge_request_template: :merge_request_template_names,
+    xcode_config: :xcode_project?
   }.freeze
 
   def initialize(full_path, project, disk_path: nil, is_wiki: false)
@@ -594,6 +595,11 @@ class Repository
   end
   cache_method :gitlab_ci_yml
 
+  def xcode_project?
+    file_on_head(:xcode_config).present?
+  end
+  cache_method :xcode_project?
+
   def head_commit
     @head_commit ||= commit(self.root_ref)
   end

lib/gitlab/file_detector.rb

@@ -14,6 +14,7 @@ module Gitlab
       avatar: /\Alogo\.(png|jpg|gif)\z/,
       issue_template: %r{\A\.gitlab/issue_templates/[^/]+\.md\z},
       merge_request_template: %r{\A\.gitlab/merge_request_templates/[^/]+\.md\z},
+      xcode_config: %r{\A[^/]*\.(xcodeproj|xcworkspace)\z},
 
       # Configuration files
       gitignore: '.gitignore',

spec/models/repository_spec.rb

@@ -1733,7 +1733,8 @@ describe Repository do
         :gitlab_ci,
         :avatar,
         :issue_template,
-        :merge_request_template
+        :merge_request_template,
+        :xcode_config
       ])
 
       repository.after_change_head
@@ -2058,6 +2059,36 @@ describe Repository do
     end
   end
 
+  describe '#xcode_project?' do
+    before do
+      allow(repository).to receive(:tree).with(:head).and_return(double(:tree, blobs: [blob]))
+    end
+
+    context 'when the root contains a *.xcodeproj file' do
+      let(:blob) { double(:blob, path: 'Foo.xcodeproj') }
+
+      it 'returns true' do
+        expect(repository.xcode_project?).to be_truthy
+      end
+    end
+
+    context 'when the root contains a *.xcworkspace file' do
+      let(:blob) { double(:blob, path: 'Foo.xcworkspace') }
+
+      it 'returns true' do
+        expect(repository.xcode_project?).to be_truthy
+      end
+    end
+
+    context 'when the root contains no XCode config file' do
+      let(:blob) { double(:blob, path: 'subdir/Foo.xcworkspace') }
+
+      it 'returns false' do
+        expect(repository.xcode_project?).to be_falsey
+      end
+    end
+  end
+
   describe "#keep_around" do
     it "does not fail if we attempt to reference bad commit" do
       expect(repository.kept_around?('abc1234')).to be_falsey