Add test for frozen_string_literal and inline components

test/sandbox/app/components/mutated_string_inline_component.rb

@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+class MutatedStringInlineComponent < ViewComponent::Base
+  erb_template <<~ERB
+    <%= "a" << "b" %>
+  ERB
+end

test/sandbox/test/rendering_test.rb

@@ -1118,4 +1118,28 @@ def test_frozen_string_literal_enabled
   ensure
     ViewComponent::Base.config.frozen_string_literal = old_value
   end
+
+  def test_inline_frozen_string_literal_disabled
+    old_value = ViewComponent::Base.config.frozen_string_literal
+    ViewComponent::Base.config.frozen_string_literal = false
+
+    with_new_cache do
+      render_inline(MutatedStringInlineComponent.new)
+      assert_includes rendered_content, "ab"
+    end
+  ensure
+    ViewComponent::Base.config.frozen_string_literal = old_value
+  end
+
+  def test_inline_frozen_string_literal_enabled
+    old_value = ViewComponent::Base.config.frozen_string_literal
+    ViewComponent::Base.config.frozen_string_literal = true
+    with_new_cache do
+      assert_raises FrozenError do
+        render_inline(MutatedStringInlineComponent.new)
+      end
+    end
+  ensure
+    ViewComponent::Base.config.frozen_string_literal = old_value
+  end
 end