Fix buggy methods

Author: znz

lib/bitclust/classentry.rb

@@ -354,26 +354,23 @@ def singleton_method?(name, inherit = true)
       if inherit
         _smap().key?(name)
       else
-        raise '[MAYBE BUG] singleton_methods(level=0) should pass Integer'
-        # singleton_methods(false).detect {|m| m.name?(name) }
+        singleton_methods(0).detect {|m| m.name?(name) }
       end
     end
 
     def instance_method?(name, inherit = true)
       if inherit
         _imap().key?(name)
       else
-        raise '[MAYBE BUG] instance_methods(level=0) should pass Integer'
-        # instance_methods(false).detect {|m| m.name?(name) }
+        instance_methods(0).detect {|m| m.name?(name) }
       end
     end
 
     def constant?(name, inherit = true)
       if inherit
         ancestors().any? {|c| c.constant?(name, false) }
       else
-        raise '[MAYBE BUG] constants(level=0) should pass Integer'
-        # constants(false).detect {|m| m.name?(name) }
+        constants(0).detect {|m| m.name?(name) }
       end
     end
 

test/test_entry.rb

@@ -62,5 +62,13 @@ def test_superclass
     assert('Exception', @lib.fetch_class("Err").superclass.name)
     assert('Exception', @lib.fetch_class("ErrErr").superclass.name)
   end
-end
 
+  def test_instance_method?
+    bar = @lib.fetch_class("Bar")
+    assert(bar.instance_method?('fugafuga'))
+    assert(!bar.instance_method?('fugafuga', false))
+    hoge = @lib.fetch_class("Hoge")
+    assert(hoge.instance_method?('fugafuga'))
+    assert(hoge.instance_method?('fugafuga', false))
+  end
+end