add mailer spec

Makefile

@@ -338,6 +338,7 @@ SPEC_HELPER_MIN_SPECS = \
 	spec/requests/password_resets_spec.rb \
 	spec/requests/password_resets_controller_spec.rb \
 	spec/models/carto/feature_flag_spec.rb \
+	spec/mailers/user_mailer_spec.rb \
 	$(NULL)
 
 # This class must be tested isolated as pollutes namespace

spec/mailers/user_mailer_spec.rb

@@ -0,0 +1,53 @@
+# coding: UTF-8
+
+require 'spec_helper_min'
+
+describe UserMailer do
+
+  include Carto::Factories::Visualizations
+
+  describe ".password_reset" do
+
+    before(:all) do
+      @user = FactoryGirl.create(:carto_user, email: 'user@example.com', password_reset_token: 'token')
+    end
+
+    before(:each) do
+      @mailer = UserMailer.password_reset(@user)
+    end
+
+    after(:each) do
+      ActionMailer::Base.deliveries = []
+    end
+
+    after(:all) do
+      @user.destroy
+    end
+
+    it "delivers the mail" do
+      expect { @mailer.deliver_now }.to change(ActionMailer::Base.deliveries, :size).by(1)
+    end
+
+    it "delivers with the expected subject" do
+      @mailer.deliver_now
+
+      mail = ActionMailer::Base.deliveries.first
+      expect(mail.subject).to eql('Reset CARTO password')
+    end
+
+    it "delivers to the expected recipients" do
+      @mailer.deliver_now
+
+      mail = ActionMailer::Base.deliveries.first
+      expect(mail.to).to eql([@user.email])
+    end
+
+    it "delivers a link with the password reset token" do
+      @mailer.deliver_now
+
+      mail = ActionMailer::Base.deliveries.first
+      expect(mail.body).to include('/password_resets/token/edit')
+    end
+
+  end
+end