1 files changed, 27 insertions, 0 deletions
diff --git a/spec/ruby/core/module/const_missing_spec.rb b/spec/ruby/core/module/const_missing_spec.rb
new file mode 100644
index 0000000000..24f2b49edc
--- /dev/null
+++ b/spec/ruby/core/module/const_missing_spec.rb
@@ -0,0 +1,27 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+require File.expand_path('../../../fixtures/constants', __FILE__)
+
+describe "Module#const_missing" do
+  it "is called when an undefined constant is referenced via literal form" do
+    ConstantSpecs::ClassA::CS_CONSTX.should == :CS_CONSTX
+  end
+
+  it "is called when an undefined constant is referenced via #const_get" do
+    ConstantSpecs::ClassA.const_get(:CS_CONSTX).should == :CS_CONSTX
+  end
+
+  it "raises NameError and includes the name of the value that wasn't found" do
+    lambda {
+      ConstantSpecs.const_missing("HelloMissing")
+    }.should raise_error(NameError, /ConstantSpecs::HelloMissing/)
+  end
+
+  it "raises NameError and does not include toplevel Object" do
+    begin
+      Object.const_missing("HelloMissing")
+    rescue NameError => e
+      e.message.should_not =~ / Object::/
+    end
+  end
+
+end