System specs for due invoice payment reminder (#1431)

add system specs for due invoice payment reminder

spec/system/clients/due_invoice_payment_reminder_spec.rb

@@ -0,0 +1,58 @@
+# frozen_string_literal: true
+
+require "rails_helper"
+
+RSpec.describe "Due invoice payment reminder", type: :system do
+  let!(:company) { create(:company) }
+  let!(:client) { create(:client, company:) }
+  let(:user) { create(:user, current_workspace_id: company.id) }
+  let!(:invoice1) { create(:invoice_with_invoice_line_items, client:, status: "sent") }
+  let!(:invoice2) { create(:invoice_with_invoice_line_items, client:, status: "viewed") }
+  let!(:invoice3) { create(:invoice_with_invoice_line_items, client:, status: "overdue") }
+
+  before do
+    create(:employment, company:, user:)
+    user.add_role :admin, company
+    sign_in(user)
+  end
+
+  it "can view invoice number on payment reminder modal" do
+    with_forgery_protection do
+      visit "/clients/#{client.id}"
+
+      find("div.relative.h-8").click
+      click_button "Payment Reminder"
+
+      expect(page).to have_content(invoice1.invoice_number)
+      expect(page).to have_content(invoice2.invoice_number)
+      expect(page).to have_content(invoice3.invoice_number)
+    end
+  end
+
+  it "can view client email and subject on email preview" do
+    with_forgery_protection do
+      visit "/clients/#{client.id}"
+
+      find("div.relative.h-8").click
+      click_button "Payment Reminder"
+      click_button "Continue"
+
+      expect(page).to have_content(client.email)
+      expect(page).to have_content("Reminder to complete payments for unpaid invoices")
+      expect(page).to have_content(invoice3.invoice_number)
+    end
+  end
+
+  it "can send payment reminder to client" do
+    with_forgery_protection do
+      visit "/clients/#{client.id}"
+
+      find("div.relative.h-8").click
+      click_button "Payment Reminder"
+      click_button "Continue"
+      click_button "Send Reminder"
+
+      expect(page).to have_content("Payment reminder has been sent to #{client.email}")
+    end
+  end
+end