diff --git a/spec/controllers/admin/emails_download_controller_spec.rb b/spec/controllers/admin/emails_download_controller_spec.rb
new file mode 100644
index 000000000..65f9a4cd3
--- /dev/null
+++ b/spec/controllers/admin/emails_download_controller_spec.rb
@@ -0,0 +1,19 @@
+require "rails_helper"
+
+describe Admin::EmailsDownloadController do
+  before do
+    admin = create(:administrator, user: create(:user, email: "admin@consul.dev"))
+    sign_in(admin.user)
+  end
+
+  describe "GET generate_csv" do
+    it "sends a list of emails in a comma-separated format" do
+      create(:user, email: "user@consul.dev")
+
+      get :generate_csv, params: { users_segment: "all_users" }
+
+      expect(response).to be_successful
+      expect(response.body).to eq "admin@consul.dev,user@consul.dev"
+    end
+  end
+end