Exclude people with no capacity from reviewer roulette

lib/gitlab/danger/roulette.rb

@@ -50,7 +50,7 @@ module Gitlab
       # @param [Teammate] person
       # @return [Boolean]
       def valid_person?(person)
-        !mr_author?(person) && !person.out_of_office?
+        !mr_author?(person) && person.available?
       end
 
       # @param [Teammate] person

lib/gitlab/danger/teammate.rb

@@ -43,12 +43,22 @@ module Gitlab
         nil # better no status than a crashing Danger
       end
 
+      # @return [Boolean]
+      def available?
+        !out_of_office? && has_capacity?
+      end
+
+      private
+
       # @return [Boolean]
       def out_of_office?
         status&.dig("message")&.match?(/OOO/i) || false
       end
 
-      private
+      # @return [Boolean]
+      def has_capacity?
+        status&.dig("emoji") != 'red_circle'
+      end
 
       def has_capability?(project, category, kind, labels)
         case category

spec/lib/gitlab/danger/roulette_spec.rb

@@ -104,11 +104,13 @@ describe Gitlab::Danger::Roulette do
     let(:person2) { Gitlab::Danger::Teammate.new('username' => 'godfat') }
     let(:author) { Gitlab::Danger::Teammate.new('username' => 'filipa') }
     let(:ooo) { Gitlab::Danger::Teammate.new('username' => 'jacopo-beschi') }
+    let(:no_capacity) { Gitlab::Danger::Teammate.new('username' => 'uncharged') }
 
     before do
-      stub_person_message(person1, 'making GitLab magic')
-      stub_person_message(person2, 'making GitLab magic')
-      stub_person_message(ooo, 'OOO till 15th')
+      stub_person_status(person1, message: 'making GitLab magic')
+      stub_person_status(person2, message: 'making GitLab magic')
+      stub_person_status(ooo, message: 'OOO till 15th')
+      stub_person_status(no_capacity, message: 'At capacity for the next few days', emoji: 'red_circle')
       # we don't stub Filipa, as she is the author and
       # we should not fire request checking for her
 
@@ -131,10 +133,14 @@ describe Gitlab::Danger::Roulette do
       expect(subject.spin_for_person([author], random: Random.new)).to be_nil
     end
 
+    it 'excludes person with no capacity' do
+      expect(subject.spin_for_person([no_capacity], random: Random.new)).to be_nil
+    end
+
     private
 
-    def stub_person_message(person, message)
-      body = { message: message }.to_json
+    def stub_person_status(person, message: 'dummy message', emoji: 'unicorn')
+      body = { message: message, emoji: emoji }.to_json
 
       WebMock
         .stub_request(:get, "https://gitlab.com/api/v4/users/#{person.username}/status")

spec/lib/gitlab/danger/teammate_spec.rb

@@ -135,17 +135,17 @@ describe Gitlab::Danger::Teammate do
     end
   end
 
-  describe '#out_of_office?' do
+  describe '#available?' do
     using RSpec::Parameterized::TableSyntax
 
     let(:capabilities) { ['dry head'] }
 
     where(:status, :result) do
-      nil                              | false
-      {}                               | false
-      { message: 'dear reader' }       | false
-      { message: 'OOO: massage' }      | true
-      { message: 'love it SOOO much' } | true
+      {}                               | true
+      { message: 'dear reader' }       | true
+      { message: 'OOO: massage' }      | false
+      { message: 'love it SOOO much' } | false
+      { emoji: 'red_circle' }          | false
     end
 
     with_them do
@@ -154,7 +154,15 @@ describe Gitlab::Danger::Teammate do
                                                      .and_return(status&.stringify_keys)
       end
 
-      it { expect(subject.out_of_office?).to be result }
+      it { expect(subject.available?).to be result }
+    end
+
+    it 'returns true if request fails' do
+      expect(Gitlab::Danger::RequestHelper).to receive(:http_get_json)
+                                                   .exactly(2).times
+                                                   .and_raise(Gitlab::Danger::RequestHelper::HTTPError.new)
+
+      expect(subject.available?).to be true
     end
   end
 end