1 files changed, 58 insertions, 0 deletions
diff --git a/test/-ext-/debug/test_debug.rb b/test/-ext-/debug/test_debug.rb
new file mode 100644
index 0000000000..4c45057b5d
--- /dev/null
+++ b/test/-ext-/debug/test_debug.rb
@@ -0,0 +1,58 @@
+require 'test/unit'
+require '-test-/debug'
+
+class TestDebug < Test::Unit::TestCase
+
+  def binds_check binds
+    count = Hash.new(0)
+    assert_instance_of(Array, binds)
+    binds.each{|(_self, bind, klass, iseq, loc)|
+      if _self == self
+        count[:self] += 1
+      end
+
+      if bind
+        assert_instance_of(Binding, bind)
+        count[:bind] += 1
+      end
+
+      if klass
+        assert(klass.instance_of?(Module) || klass.instance_of?(Class))
+        count[:class] += 1
+      end
+
+      if iseq
+        count[:iseq] += 1
+        assert_instance_of(RubyVM::InstructionSequence, iseq)
+
+        # check same location
+        assert_equal(loc.path, iseq.path)
+        assert_equal(loc.absolute_path, iseq.absolute_path)
+        assert_equal(loc.label, iseq.label)
+        assert_operator(loc.lineno, :>=, iseq.first_lineno)
+      end
+
+      assert_instance_of(Thread::Backtrace::Location, loc)
+
+    }
+    assert_operator(0, :<, count[:self])
+    assert_operator(0, :<, count[:bind])
+    assert_operator(0, :<, count[:iseq])
+    assert_operator(0, :<, count[:class])
+  end
+
+  def test_inspector_open
+    binds = Bug::Debug.inspector
+    binds_check binds
+  end
+
+  def inspector_in_eval
+    eval("Bug::Debug.inspector")
+  end
+
+  def test_inspector_open_in_eval
+    bug7635 = '[ruby-core:51640]'
+    binds = inspector_in_eval
+    binds_check binds
+  end
+end