From 32b8daf29d6c1c78dc92c9955a849f439443d982 Mon Sep 17 00:00:00 2001
From: cryptogopher <cryptogopher@noreply.me>
Date: Fri, 5 Jan 2024 04:16:38 +0100
Subject: [PATCH] Add Unit system tests

---
 test/system/units_test.rb | 35 +++++++++++++++++++++++++++++++++++
 test/test_helper.rb       |  8 ++++++++
 2 files changed, 43 insertions(+)
 create mode 100644 test/system/units_test.rb

diff --git a/test/system/units_test.rb b/test/system/units_test.rb
new file mode 100644
index 0000000..5f2369f
--- /dev/null
+++ b/test/system/units_test.rb
@@ -0,0 +1,35 @@
+require "application_system_test_case"
+
+class UnitsTest < ApplicationSystemTestCase
+  setup do
+    @admin = users(:admin)
+    sign_in
+    visit units_path
+  end
+
+  test "index" do
+    assert_selector 'tbody > tr', count: Unit.count
+    assert_current_path units_path
+  end
+
+  test "add unit" do
+    click_on t('units.index.add_unit')
+    assert_no_selector :link_or_button, text: t('units.index.add_unit')
+
+    within first('tbody > tr') do
+      fill_in 'unit[symbol]', with: SecureRandom.random_symbol(rand(1..10))
+      fill_in 'unit[name]', with: [nil, SecureRandom.alphanumeric(rand(1..500))].sample
+      assert_difference ->{ Unit.count }, 1 do
+        click_on t(:add)
+      end
+    end
+
+    within('tbody') do
+      assert_no_selector :fillable_field
+      assert_selector 'tr', count: Unit.count
+    end
+    assert_selector :link_or_button, text: t('units.index.add_unit')
+
+    # assert_selector flash
+  end
+end
diff --git a/test/test_helper.rb b/test/test_helper.rb
index dfeff23..87a0161 100644
--- a/test/test_helper.rb
+++ b/test/test_helper.rb
@@ -12,6 +12,14 @@ class ActiveSupport::TestCase
   include AbstractController::Translation
   include ActionMailer::TestHelper
 
+  # NOTE: use public #alphanumeric(chars: ...) from Ruby 3.3 onwards
+  SecureRandom.class_eval do
+    def self.random_symbol(n = 10)
+      # Unicode characters: 32-126, 160-383
+      choose([*' '..'~', 160.chr, *'¡'..'ſ'], n)
+    end
+  end
+
   def randomize_user_password!(user)
     random_password.tap { |p| user.update!(password: p) }
   end