1 files changed, 11 insertions, 0 deletions
diff --git a/mrbgems/mruby-eval/test/eval.rb b/mrbgems/mruby-eval/test/eval.rb
index e95171223..7e28ade07 100644
--- a/mrbgems/mruby-eval/test/eval.rb
+++ b/mrbgems/mruby-eval/test/eval.rb
@@ -151,3 +151,14 @@ assert('Access numbered parameter from eval') do
     hoge.fuga(3) { _1 + eval("_1") }
   }
 end
+
+assert('Module#class_eval with string') do
+  c = Class.new
+  c.class_eval "def foo() 42; end"
+  cc = c.new
+  assert_true cc.respond_to?(:foo)
+  assert_equal 42, c.new.foo
+
+  b = c.class_eval("class A; def a; 55; end; end; class B; def b; A; end; end; B")
+  assert_equal 55, b.new.b.new.a
+end