1 files changed, 10 insertions, 0 deletions
diff --git a/mrbgems/mruby-eval/test/eval.rb b/mrbgems/mruby-eval/test/eval.rb
index eb51f396a..87c64732d 100644
--- a/mrbgems/mruby-eval/test/eval.rb
+++ b/mrbgems/mruby-eval/test/eval.rb
@@ -50,3 +50,13 @@ assert 'eval syntax error' do
     eval 'p "test'
   end
 end
+
+assert('String instance_eval') do
+  obj = Object.new
+  obj.instance_variable_set :@test, 'test'
+  assert_raise(ArgumentError) { obj.instance_eval(0) { } }
+  assert_raise(ArgumentError) { obj.instance_eval('0', 'test', 0, 'test') }
+  assert_equal(['test.rb', 10]) { obj.instance_eval('[__FILE__, __LINE__]', 'test.rb', 10)}
+  assert_equal('test') { obj.instance_eval('@test') }
+  assert_equal('test') { obj.instance_eval { @test } }
+end