Use receiver #name rather than #inspect to build NameError message

1 files changed, 30 insertions, 0 deletions

diff --git a/spec/ruby/language/constants_spec.rb b/spec/ruby/language/constants_spec.rb
index 95b0dcace9..47897234b9 100644
--- a/spec/ruby/language/constants_spec.rb
+++ b/spec/ruby/language/constants_spec.rb
@@ -154,6 +154,36 @@ describe "Literal (A::X) constant resolution" do
     -> { ConstantSpecs::ParentA::CS_CONSTX }.should raise_error(NameError)
   end
 
+  ruby_version_is "2.8" do
+    it "uses the module or class #name to craft the error message" do
+      mod = Module.new do
+        def self.name
+          "ModuleName"
+        end
+
+        def self.inspect
+          "<unusable info>"
+        end
+      end
+
+      -> { mod::DOES_NOT_EXIST }.should raise_error(NameError, /uninitialized constant ModuleName::DOES_NOT_EXIST/)
+    end
+
+    it "uses the module or class #inspect to craft the error message if they are anonymous" do
+      mod = Module.new do
+        def self.name
+          nil
+        end
+
+        def self.inspect
+          "<unusable info>"
+        end
+      end
+
+      -> { mod::DOES_NOT_EXIST }.should raise_error(NameError, /uninitialized constant <unusable info>::DOES_NOT_EXIST/)
+    end
+  end
+
   it "sends #const_missing to the original class or module scope" do
     ConstantSpecs::ClassA::CS_CONSTX.should == :CS_CONSTX
   end