Add specs for TriggerVariableEntity

app/serializers/trigger_variable_entity.rb

@@ -4,5 +4,5 @@ class TriggerVariableEntity < Grape::Entity
   include RequestAwareEntity
 
   expose :key, :public
-  expose :value, if: ->(_, _) { request.project.team.maintainer?(request.current_user) }
+  expose :value, if: ->(_, _) { can?(request.current_user, :admin_build, request.project) }
 end

spec/serializers/trigger_variable_entity_spec.rb

+require 'spec_helper'
+
+describe TriggerVariableEntity do
+  let(:project) { create(:project) }
+  let(:request) { double('request') }
+  let(:user) { create(:user) }
+  let(:variable) { { key: 'TEST_KEY', value: 'TEST_VALUE' } }
+
+  subject { described_class.new(variable, request: request).as_json }
+
+  before do
+    allow(request).to receive(:current_user).and_return(user)
+    allow(request).to receive(:project).and_return(project)
+  end
+
+  it 'exposes the variable key' do
+    expect(subject).to include(:key)
+  end
+
+  context 'when user has access to the value' do
+    context 'when user is maintainer' do
+      before do
+        project.team.add_maintainer(user)
+      end
+
+      it 'exposes the variable value' do
+        expect(subject).to include(:value)
+      end
+    end
+
+    context 'when user is owner' do
+      let(:user) { project.owner }
+
+      it 'exposes the variable value' do
+        expect(subject).to include(:value)
+      end
+    end
+  end
+
+  context 'when user does not have access to the value' do
+    before do
+      project.team.add_developer(user)
+    end
+
+    it 'does not expose the variable value' do
+      expect(subject).not_to include(:value)
+    end
+  end
+end