Test available assignees endpoint for API v3

spec/requests/work_packages_api_spec.rb

@@ -30,8 +30,9 @@ require 'spec_helper'
 require 'rack/test'
 
 describe API::V3::WorkPackages::WorkPackagesAPI do
+  let(:admin) { FactoryGirl.create(:admin) }
+
   describe "activities" do
-    let(:admin) { FactoryGirl.create(:admin) }
     let(:work_package) { FactoryGirl.create(:work_package) }
     let(:comment) { "This is a test comment!" }
 
@@ -58,4 +59,97 @@ describe API::V3::WorkPackages::WorkPackagesAPI do
       end
     end
   end
+
+  describe "available assignees" do
+    let(:work_package) { FactoryGirl.build_stubbed(:work_package) }
+
+    before { allow(WorkPackage).to receive(:find).and_return(work_package) }
+
+    shared_context "request available assignees" do
+      before { get "/api/v3/work_packages/#{work_package.id}/available_assignees" }
+    end
+
+    it_behaves_like "safeguarded API" do
+      include_context "request available assignees"
+    end
+
+    describe "response" do
+      before { allow(User).to receive(:current).and_return(admin) }
+
+      shared_examples_for "returns available assignees" do
+        include_context "request available assignees"
+
+        subject { JSON.parse(response.body) }
+
+        it { expect(subject).to have_key("_embedded") }
+
+        it { expect(subject["_embedded"]).to have_key("availableAssignees") }
+
+        it { expect(subject["_embedded"]["availableAssignees"].count).to eq(available_assignee_count) }
+      end
+
+      describe "users" do
+        let(:user) { FactoryGirl.build_stubbed(:user) }
+        let(:user2) { FactoryGirl.build_stubbed(:user) }
+
+        context "single user" do
+          before do
+            allow(work_package.project).to receive(:possible_assignees).and_return([user])
+
+            allow(user).to receive(:created_on).and_return(user.created_at)
+            allow(user).to receive(:updated_on).and_return(user.created_at)
+          end
+
+          it_behaves_like "returns available assignees" do
+            let(:available_assignee_count) { 1 }
+          end
+        end
+
+        context "multiple users" do
+          before do
+            allow(work_package.project).to receive(:possible_assignees).and_return([user, user2])
+
+            allow(user).to receive(:created_on).and_return(user.created_at)
+            allow(user).to receive(:updated_on).and_return(user.created_at)
+
+            allow(user2).to receive(:created_on).and_return(user.created_at)
+            allow(user2).to receive(:updated_on).and_return(user.created_at)
+          end
+
+          it_behaves_like "returns available assignees" do
+            let(:available_assignee_count) { 2 }
+          end
+        end
+      end
+
+      describe "groups" do
+        let(:group) { FactoryGirl.create(:group) }
+        let(:work_package) { FactoryGirl.create(:work_package) }
+
+        before { allow(WorkPackage).to receive(:find).and_return(work_package) }
+
+        context "with work_package_group_assignment" do
+          before do
+            allow(Setting).to receive(:work_package_group_assignment?).and_return(true)
+            work_package.project.add_member! group, FactoryGirl.create(:role)
+          end
+
+          it_behaves_like "returns available assignees" do
+            let(:available_assignee_count) { 1 }
+          end
+        end
+
+        context "without work_package_group_assignment" do
+          before do
+            allow(Setting).to receive(:work_package_group_assignment?).and_return(false)
+            work_package.project.add_member! group, FactoryGirl.create(:role)
+          end
+
+          it_behaves_like "returns available assignees" do
+            let(:available_assignee_count) { 0 }
+          end
+        end
+      end
+    end
+  end
 end