some basic tests for admin/users controller, fixed bug in admin/users controller for displaying users

Fixes by hounci violations

spec/controllers/admin/users_controller_spec.rb

@@ -0,0 +1,55 @@
+require 'spec_helper'
+describe Admin::UsersController do
+  let!(:admin_role) { create(:admin_role) }
+  let!(:participant_role) { create(:participant_role) }
+  let(:admin) { create(:admin) }
+  let(:user) { create(:user) } 
+  before(:each) do
+    sign_in(admin)
+  end
+  describe 'GET #index' do
+    it 'populates an array of users' do
+      user1 = create(:user, email: 'gopesh.7500@gmail.com')
+      user2 = create(:user, email: 'gopesh_750@gmail.com')
+      get :index
+      expect(assigns(:users)).to match_array([user, admin, user1, user2])
+    end
+    it 'renders index template' do
+      get :index
+      expect(response).to render_template :index
+    end
+  end
+  describe 'PATCH #update' do
+    context 'valid attributes' do
+      it 'locates requested @user' do
+        patch :update, id: user.id
+        expect(build(:user, id: user.id)).to eq(user)
+      end
+      it 'changes @users attributes' do
+        patch :update, id: user.id
+        expect(build(
+          :user, email: 'example@incoherent.de', id: user.id).email).
+              to eq('example@incoherent.de')
+      end
+      it "redirects to the updated user" do
+        patch :update, id: user.id
+        expect(response).to redirect_to admin_users_path
+      end
+    end
+  end
+  describe 'DELETE #destroy' do 
+    before :each do
+      @user = create(:user)
+    end
+    context 'valid attributes' do
+      it 'it deletes the contact' do
+        expect { delete :destroy, id: @user.id }.to change(User, :count).by(-1)
+      end
+      it 'redirects to users#index' do
+        delete :destroy, id: @user
+        expect(response).to redirect_to admin_users_path
+      end
+    end
+  end
+
+end