Stop raising error if CSS classes are used instead of system arguments (#3219)

Co-authored-by: camertron <camertron@users.noreply.github.com>

Author: camertron

.changeset/wild-shirts-heal.md

@@ -0,0 +1,5 @@
+---
+"@primer/view-components": minor
+---
+
+Removing the validate classname check that forces system arguments instead of utility classes

lib/primer/classify.rb

@@ -49,9 +49,7 @@ def call(args = {})
             case key
             when :classes
               # insert :classes first to avoid huge doc diffs
-              if (class_names = validated_class_names(val))
-                result.unshift(class_names)
-              end
+              result.unshift(val)
               next
             when :style
               style = val
@@ -105,29 +103,6 @@ def validate(key, val, brk)
         brk_str = Primer::Classify::Utilities::BREAKPOINTS[brk]
         Primer::Classify::Utilities.validate(key, val, brk_str)
       end
-
-      def validated_class_names(classes)
-        return if classes.blank?
-
-        if raise_on_invalid_options? && !ENV["PRIMER_WARNINGS_DISABLED"]
-          invalid_class_names =
-            classes.split.each_with_object([]) do |class_name, memo|
-              memo << class_name if Primer::Classify::Validation.invalid?(class_name)
-            end
-
-          if invalid_class_names.any?
-            raise ArgumentError, "Use System Arguments (https://primer.style/view-components/system-arguments) "\
-              "instead of Primer CSS class #{'name'.pluralize(invalid_class_names.length)} #{invalid_class_names.to_sentence}. "\
-              "This warning will not be raised in production. Set PRIMER_WARNINGS_DISABLED=1 to disable this warning."
-          end
-        end
-
-        classes
-      end
-
-      def raise_on_invalid_options?
-        Rails.application.config.primer_view_components.raise_on_invalid_options
-      end
     end
   end
 end

test/lib/classify_test.rb

@@ -411,43 +411,12 @@ def test_animation
     assert_generated_class("anim-hover-grow", { animation: :hover_grow })
   end
 
-  def test_does_not_raise_error_when_passing_in_a_primer_css_class_name_in_development_and_flag_is_set
-    ENV["PRIMER_WARNINGS_DISABLED"] = "1"
-    with_raise_on_invalid_options(true) do
-      assert_generated_class("color-bg-primary text-center float-left ml-1", { classes: "color-bg-primary text-center float-left ml-1" })
-    end
-  ensure
-    ENV["PRIMER_WARNINGS_DISABLED"] = nil
-  end
-
-  def test_does_not_raise_error_when_passing_in_a_primer_css_class_otherwise
-    with_raise_on_invalid_options(false) do
-      assert_generated_class("color-bg-primary text-center float-left ml-1", { classes: "color-bg-primary text-center float-left ml-1" })
-    end
-  end
-
   def test_does_include_leading_trailing_whitespace_in_class
     generated_class = Primer::Classify.call(classes: "foo-class")[:class]
     refute(generated_class.start_with?(" "))
     refute(generated_class.end_with?(" "))
   end
 
-  def test_raises_if_not_using_system_arguments_when_raise_on_invalid_options_is_true
-    with_raise_on_invalid_options(true) do
-      exception = assert_raises ArgumentError do
-        Primer::Classify.call(classes: "d-block")
-      end
-
-      assert_includes exception.message, "Use System Arguments (https://primer.style/view-components/system-arguments) instead of Primer CSS class"
-    end
-  end
-
-  def test_does_not_raise_if_not_using_system_arguments_when_raise_on_invalid_options_is_false
-    with_raise_on_invalid_options(false) do
-      assert_generated_class("d-block", { classes: "d-block" })
-    end
-  end
-
   private
 
   def assert_generated_class(generated_class_name, input)