Improve the demo experience

rails-app/test/system/products_test.rb

@@ -0,0 +1,47 @@
+require "application_system_test_case"
+
+class ProductsTest < ApplicationSystemTestCase
+  setup do
+    @product = products(:one)
+  end
+
+  test "visiting the index" do
+    visit products_url
+    assert_selector "h1", text: "Products"
+  end
+
+  test "creating a Product" do
+    visit products_url
+    click_on "New Product"
+
+    fill_in "Description", with: @product.description
+    fill_in "Name", with: @product.name
+    fill_in "Price", with: @product.price
+    click_on "Create Product"
+
+    assert_text "Product was successfully created"
+    click_on "Back"
+  end
+
+  test "updating a Product" do
+    visit products_url
+    click_on "Edit", match: :first
+
+    fill_in "Description", with: @product.description
+    fill_in "Name", with: @product.name
+    fill_in "Price", with: @product.price
+    click_on "Update Product"
+
+    assert_text "Product was successfully updated"
+    click_on "Back"
+  end
+
+  test "destroying a Product" do
+    visit products_url
+    page.accept_confirm do
+      click_on "Destroy", match: :first
+    end
+
+    assert_text "Product was successfully destroyed"
+  end
+end