[CLEAN] Synthetic Benchmark PR #36420 - DEV: Add symbol to ActiveModel attribute types

config/initializers/100-active-support-type-extensions.rb

@@ -2,4 +2,5 @@
 
 Rails.application.config.to_prepare do
   ActiveModel::Type.register(:array, ActiveSupportTypeExtensions::Array)
+  ActiveModel::Type.register(:symbol, ActiveSupportTypeExtensions::Symbol)
 end

lib/active_support_type_extensions/symbol.rb

@@ -0,0 +1,18 @@
+# frozen_string_literal: true
+
+module ActiveSupportTypeExtensions
+  class Symbol < ActiveModel::Type::Value
+    def serializable?(_)
+      false
+    end
+
+    def cast_value(value)
+      case value
+      when Symbol, NilClass
+        value
+      else
+        value.to_s.presence.try(:to_sym)
+      end
+    end
+  end
+end

spec/lib/active_support_type_extensions/symbol_spec.rb

@@ -0,0 +1,49 @@
+# frozen_string_literal: true
+
+RSpec.describe ActiveSupportTypeExtensions::Symbol do
+  subject(:type) { described_class.new }
+
+  describe "#cast" do
+    subject(:casted_value) { type.cast(value) }
+
+    context "when 'value' is a string" do
+      let(:value) { "a_symbol" }
+
+      it "converts it" do
+        expect(casted_value).to eq(:a_symbol)
+      end
+    end
+
+    context "when 'value' is a symbol" do
+      let(:value) { :a_symbol }
+
+      it "returns it" do
+        expect(casted_value).to eq(value)
+      end
+    end
+
+    context "when 'value' is nil" do
+      let(:value) { nil }
+
+      it "returns nil" do
+        expect(casted_value).to eq(value)
+      end
+    end
+
+    context "when 'value' is blank" do
+      let(:value) { "" }
+
+      it "returns nil" do
+        expect(casted_value).to be_nil
+      end
+    end
+
+    context "when 'value' is something else" do
+      let(:value) { 123 }
+
+      it "converts it" do
+        expect(casted_value).to eq(:"123")
+      end
+    end
+  end
+end