obscure auth password upon #inspect, added test, closes ruby-ldap#216

Author: astockwell

lib/net/ldap.rb

@@ -1195,6 +1195,11 @@ def paged_searches_supported?
     @server_caps[:supportedcontrol].include?(Net::LDAP::LDAPControls::PAGED_RESULTS)
   end
 
+  # Mask auth password
+  def inspect
+    super.gsub @auth[:password], "*******" if @auth[:password]
+  end
+
   private
 
   # Yields an open connection if there is one, otherwise establishes a new

test/test_ldap.rb

@@ -57,4 +57,10 @@ def test_instrument_search_with_size
     assert_equal "(uid=user1)", payload[:filter]
     assert_equal result.size, payload[:size]
   end
+
+  def test_obscure_auth
+    password = "opensesame"
+    @subject.auth "joe_user", password
+    assert_not_include(@subject.inspect, password)
+  end
 end