test: cover ApplicationNPlusOneTest, teardown

test/test_asset_helpers.rb

@@ -0,0 +1,44 @@
+require 'minitest/autorun'
+require 'prism'
+
+class AssetHelpersTest < Minitest::Test
+  def setup
+    Prism::Assets.reset!
+    @context = Prism::Template::Context.new
+  end
+
+  def teardown
+    Prism::Assets.reset!
+  end
+
+  def test_asset_path_falls_back_to_the_logical_path_without_a_manifest
+    assert_equal '/assets/application.css', @context.asset_path('application.css')
+  end
+
+  def test_asset_path_uses_the_manifest_when_one_is_loaded
+    Prism::Assets.manifest = Prism::Assets::Manifest.new('application.css' => 'application-deadbeef.css')
+    assert_equal '/assets/application-deadbeef.css', @context.asset_path('application.css')
+  end
+
+  def test_asset_path_raises_for_an_unknown_asset_once_a_manifest_is_loaded
+    Prism::Assets.manifest = Prism::Assets::Manifest.new
+    assert_raises(Prism::Assets::Manifest::AssetNotFound) { @context.asset_path('missing.css') }
+  end
+
+  def test_stylesheet_link_tag
+    Prism::Assets.manifest = Prism::Assets::Manifest.new('application.css' => 'application-deadbeef.css')
+    assert_equal '<link rel="stylesheet" href="/assets/application-deadbeef.css">',
+                 @context.stylesheet_link_tag('application.css')
+  end
+
+  def test_javascript_include_tag
+    Prism::Assets.manifest = Prism::Assets::Manifest.new('application.js' => 'application-cafef00d.js')
+    assert_equal '<script src="/assets/application-cafef00d.js"></script>',
+                 @context.javascript_include_tag('application.js')
+  end
+
+  def test_image_tag_with_extra_attributes
+    assert_equal '<img src="/assets/logo.png" alt="Logo">',
+                 @context.image_tag('logo.png', alt: 'Logo')
+  end
+end