[Rails view test with RSpec + Capybara]

index.html.slim

/ # FILE: views/api/keys/index.html.slim.rb

h1 API Keys

table class="table"
  thead
    tr
      th Key
      th User
      th Description
      th Created
      th Expiration
      th Actions
  tbody
    - @api_keys.each do |api_key|
      tr
        td = api_key.token
        td = api_key.description
        td = link_to api_key.user.email, edit_admin_user_path(api_key.user)
        td = api_key.created_at.strftime("%B %d, %Y %I:%M %p")
        td = api_key.expires_at&.strftime("%B %d, %Y %I:%M %p") || 'Never'
        td
          = link_to 'Delete', api_partner_key_path(api_key), method: :delete, data: { confirm: 'Are you sure?' }, class: 'btn btn-danger'

index.html.slim_spec.rb

# FILE: spec/views/api/keys/index.html.slim_spec.rb

# frozen_string_literal: true

require 'rails_helper'

RSpec.describe 'api/keys/index.html.slim', type: :view do
  let(:user1) { create(:user) } # NOTE: API keys are automatically created for new Users
  let(:user2) { create(:user) }
  let(:api_keys) { ApiKey.all }

  before(:example) do
    assign(:api_keys, api_keys) # simulates setting @api_keys in the controller
    render
  end

  it 'shows all API keys' do
    expect(api_keys).to_not be_empty
    api_keys.each do |api_key|
      expect(rendered).to have_content(api_key.token)
      expect(rendered).to have_content(api_key.description)
      expect(rendered).to have_content(api_key.user.email)
      expect(rendered).to have_content(api_key.created_at.strftime('%B %d, %Y %I:%M %p'))
      expect(rendered).to have_content(api_key.expires_at&.strftime('%B %d, %Y %I:%M %p') || 'Never')
      expect(rendered).to have_link('Delete', href: api_partner_key_path(api_key))
    end
  end
end