Johnson Google Group

I abhor Earth Hour

2013-03-22T13:20:03Z

So said Canadian Economics Professor Ross McKitrick in 2009 when asked by a
journalist for his thoughts on the importance of Earth Hour. I've just been
reminded that it's coming up all over again
<[link]>tomorrow. Ross went on:

Abundant, cheap electricity has been the greatest source of human

setTimeout, async script loading, and head.js

2011-02-07T17:01:58Z

Is there anyway to test scripts that load other scripts asynchronously with
head.js(...)?
script 1:
// ...
head.js("/path/to/script2.js", "/path/to/script3.js", callback);
// ...
I want to test the functionality in the callback function, but it depends on
having script2 and script3 loaded.

state of unstable

2010-08-19T16:34:34Z

We're still not out of the woods with the unstable branch. While it
passes the johnson tests, it core dumps elsewhere.

My test right now is one of the specs in capybara -envjs:

smparkes@smp ~/capybara-envjs i386$ spec spec/driver/
envjs_driver_spec.rb
.... WARNIING: [Thu Aug 19 2010 09:31:18 GMT-0700 (PST)] {ENVJS}

Classes, prototypes, Ruby 1.9.x

2010-08-07T08:22:32Z

Hi,
Do you happen to have an example of how to define a class (or
rather a function/prototype) in JavaScript (e.g. Ruby.Person
or whatever) _and_ use that as a class in Ruby?
As a side note: There was an example in the RubyConf talk (2008)
about adding a method to a Ruby class from JavaScript context

Sandboxing and untrusted code

2010-06-27T11:16:55Z

Is it possible to run untrusted code inside of Johnson. I've removed
Ruby object (Ruby = null) inside of context, but It seems that you can
eval ruby code through RubyLandProxy object. You can replicate this by
running:

js = Johnson::Runtime.new()
js[:proxy] = {:key => 'value'}
js[:Ruby] = nil

Backtraces

2010-07-04T03:36:56Z

The lack of information when Johnson spits out a backtrace is
completely maddening:

Johnson::Error in 'Feature: Gift this (under Javascript) Scenario:
Choosing to gift items and going forward'
b is null
/Library/Ruby/Gems/1.8/gems/en vjs-0.3.6/lib/envjs/static.js: 1218
[JavaScript]
inline:2302 [JavaScript]

Do still johnson be incompatible with ruby 1.9.x?

2010-06-14T02:03:17Z

I had install johnson without problems in my rvm 1.8.7 but when I
tried in 1.9.2 a "conversions.cc:337: error: ‘ruby_errinfo’ was not
declared in this scope" error failed to build gem native extension.
Somebody is working to fix the "node.h" dependency?

Regards

Manuel

[johnson-talk] Assertion failed

2010-05-17T15:00:29Z

Dear Johnson developers,

while parsing a file with Johnson, the following error occurred:
Assertion failed: (chars = js_InflateString(context->js,
StringValuePtr(file_contents), &length)), function parse_io, file
immutable_node.c, line 51.

I guess it has to do with the encoding of the string being parsed.

[johnson-talk] Browse a mutable tree

2010-04-27T08:33:17Z

Hello dear Johnson developers and users,

Johnson seems to be a good library to manipulate JS code in a Ruby
program but is still under (active?) development. Therefore, I guess
some functions may not be implemented.

I happened to come across a function that is not mentionned in the
documentation and may not work. Still I do not have any idea to test

[johnson-talk] spidermonkey ran out of memory :(

2010-04-22T22:14:59Z

We are using Johnson via Harmony to run javascript unit tests in our
Sinatra app. It was all working great until we added our last test
file. Now, the suite ends with either a Segmentation fault in env.js
or a NoMemoryError.

It looks like there is no garbage collection between our tests. Are
there any configuration options in Johnson to increase Spidermonkey

[johnson-talk] ruby 1.9.1 compatibility

2010-04-16T02:55:32Z

I am working with Rails 3 and Ruby 1.9.1 and wondering what the status
for ruby 1.9.1 compatibility is?

Installation fails when building the native components:

In file included from conversions.c:2:
js_land_proxy.h:11:18: error: node.h: No such file or directory

What can I do to help out?

Newbie with 32-bit Mac

2010-04-13T14:36:26Z

Was thinking over the weekend it would be cool to be able to parse
some JS in Ruby. Discovered Johnson (and RKelly and a few other
things). I'm currently using an old (2006) Mac Mini and Snow Leopard:
Model Name: Mac mini
Model Identifier: Macmini1,1
Processor Name: Intel Core Duo
Processor Speed: 1.66 GHz

REE

2010-03-30T05:17:25Z

Anyone know enough about REE (and Johnson) to know if there are any fundamental reason it shouldn't work? I know the major differences are with the garbage collector, which is something Johnson/SM could be sensitive to.
I ran a bunch of stuff without any trouble ... then hit something that segvs in ruby.

cut 2.0?

2010-03-23T15:53:19Z

Anything anybody wants to wait for before cutting 2.0? Capybara integrated the external driver change which means capybara-envjs now works with stock capybara. All it needs is envjs which needs johnson.
The only thing I was toying with was the Great Rename, moving all the tracemonkey-named things to spidermonkey. Kind of a big change at the last minute(?), but, then, it's likely to either work or not: problems aren't likely to be latent.

JS_SetThreadStackLimit

2010-03-12T19:05:54Z

Spidermonkey lets you set a recursion limit so you don't blow out the stack and coredump. Their shell does this but we're not setting it. It's particularly important because they also don't do cycle detection in their JSON routines at this point, so you give it an object with a cycle and, bam, segv.

cli functions

2010-03-11T17:45:43Z

I use the CLI functions in env.js but need to override some of them ... override a priori. Any objection to only defining them if they aren't already defined, e.g.,
this.load = this.load || function load() {...};

OS X - 10.5.6 - 2.0.0.pre3 doesn't install correctly - builds fine

2010-03-10T17:19:54Z

1.2.0 installs fine. However, when I remove it and then go for --
prelease, the CLI doesn't work and I can't use the gem in irb.
Hopefully someone can shed some light or an alternative way to
install. I was really hoping to try out Harmony.
Best,
Trevor
$ sudo gem install johnson --prerelease -V
GET 302 Found: [link]

Re: [Capybara] new envjs_driver version

2010-03-02T23:58:30Z

A helluva a lot faster than it used to?
Right now it takes about 110 seconds to run the session specs. Selenium takes about 300 seconds to do the same thing.
Not as fast as I would like. There should be some low-hanging fruit ...
The most time consuming things right now are the big xpath expressions.

segv fix/next pre

2010-03-02T05:28:29Z

Matthew helped me figure out where/fix an exception was causing the segv. I could have removed the exception but I wanted to make sure that the ex actually got reported out the top of the app ...
Also cleaned up a bunch of things that in the code I added for split globals, etc., but wasn't sure about, again with Matthew's help.

segv

2010-02-26T23:55:06Z

Okay, I can consistently make johnson core. It's in a situation where ruby calls spidermonky calls ruby which raises an exception and calls spidermonky to tell it.
Valgrind detects thing are corrupt:
==14561== Invalid read of size 8
==14561== at 0xF15969C: js_FramePCToLineNumber (jsscript.cpp:1801)

memprof / GC dynamics

2010-02-23T23:46:18Z

Wow, memprof is great stuff.
I have a case I don't really understand, though. (On 1.8.7-p249)
I have
<code>
Memprof.start # optionally
GC.start
<code>
Whether I have the Memprof.start call in there or not changes the results of GC.start. [GC.start should be a complete mark/sweep, shouldn't it?]
My context is Johnson, which is linking to Spidermonkey, the Mozilla JS interpreter. Johnson has C ext Ruby objects that are roots to Spidermonkey's GC. If I run GC.start w/o Memprof.start, it appears Ruby refs are getting through the GC and staying roots to Spidermonkey. Simply adding Memprof.start changes this: the GC.start does (apparently) free those roots.

pre2

2010-02-22T17:46:08Z

I'd like to do a pre2 soon/today; primarily to get the GC issue fixed but also a couple of other small and some recent patches from moz.
So unless I hear otherwise ...

no 64 bit JIT yet ...

2010-02-22T16:01:46Z

I guess there's good reason the JIT is turned off in 64 bit builds. From the latest mozilla-central branch (which does have JIT turned on for 64 bits):
smparkes@collegeterrace ~/capybara $ spec spec/driver/envjs_driver_spec. rb
.Assertion failed:
LIR type error (start of writer pipeline):
in instruction with opcode: qeq

gc interactions (performance, not correctness)

2010-02-20T19:44:59Z

I'm wondering what the best way is to make "global GC", i.e., the combined GC, work best.
One thought is to make the SM collector call the Ruby collector. But I'm not sure how effective that is. I'm guessing what I'm seeing is that very little garbage in Ruby land can create dumpsters of garbage in Spidermonkey land. I'm not sure if the Ruby collector will actually do anything if it doesn't think there's much to do.

Johnson/envjs support for Capybara (was Re: [Capybara] driver specs with node path support ...)

2010-02-19T02:53:29Z

[Adding the envjs and johnson lists, rather than posting separately. This thread is about envjs support in Capybara, the webrat-like full stack testing framework for rack applications like Rails, Sinatra, etc.]
I've added Capybara driver support for Johnson/Tracemonkey and env.js. I just committed it to my fork, [link].

Deleting rubyforge plugin

2010-02-17T05:48:03Z

What's up with this line in the Rakefile?
Hoe.plugins.delete :rubyforge
I can't seem to run the tests while that's in there. I'm tempted to remove it.

GC issues ...

2010-02-16T22:51:46Z

Okay, looks like I can force a core dump in the Ruby GCer if I compile 1.8.6-p383 with the normal (-O2) options. Doesn't matter what the compilation flags to the extension or TraceMonkey are.
Thought I'd check 1.8.7.

pre1?

2010-02-09T21:21:00Z

I've been thinking about a pre1: it would include SM from FF3.6 and a fix to the way split objects are handled (a patch submited to Moz). It would effect most people not at all but envjs people a lot (in the sense that the next rev of envjs requires the fixed split objects) After that, i think we're good to just do cleanup and any bug fixes that come up ...

Firefox 3.6 spidermonkey integration

2010-01-26T23:14:31Z

I don't want this to hold up pre0, but I've started looking at integrating the spidermonkey from FF3.6. I stuck my work in progress in the Firefox-3.6 branch.
It looks pretty simple at this point. There are some subtle issues with the split object that I'm still tracking down/checking but those probably don't concern anybody but me ... at least not yet.

1.2.0 cut / 2.0.0.pre0 timing

2010-01-26T20:50:49Z

John cut 1.2.0 yesterday. Yay! No longer have to say "stop the freaking segfaulting".
We have the unstable branch now that has my tracemonkey changes and which has been discussed in IRC as the basis for a 2.0. So the question at hand is whether to do and the timing of a 2.0.0.pre0 prelease gem. I have a bunch of downstream stuff that needs it, so I'm particularly motivated.

pull tracemonkey support?

2010-01-06T20:21:19Z

I'm wondering if there's any chance of pulling the tracemonkey support into the main (jbarnette) repo. I've been using it pretty stably for a couple of months now. Also, FF3.6 is in RC now. If we use the version of spider/tracemonkey included in FF as a guide (talked about earlier and I agree with), then when 3.6 gets cut, it'd be time to look at upgrading the TM monkey support. I'd rather get the current code out (if it's going to get out) before starting on that.

Which version of jQuery is used with the Johnson test suite?

2009-12-30T19:32:51Z

Hi, I'm trying to use jQuery to test some things out with johnson.
Posts on this list seem to indicate the jquery test suite runs with
it. But my limited test fails using jquery 1.3.2.
The test output is:
1)
ArgumentError in 'Field Requirements should populate options by onload'
wrong number of arguments (1 for 0)

Running SpiderMonkey on Mac OSX with Johnson

2009-12-27T20:52:21Z

Well, I was not able to get Johnson compiled on 1.8.7 on my Mac due to
the spidermonkey compile problem mentioned elsewhere. I got the same
result with smparkes-johnson gem.
However, spidermonkey is in my Mac ports collection because it is a
dependency of CouchDB.
I was wondering if I can configure Johnson to use the built in

Time / memory limit on execution?

2009-12-02T16:08:56Z

Hi --

I've been looking for a way to let users write simple bits of
Javascript code for my app and execute them server-side. From what
I've seen so far, Johnson might be a great way to do this, except I
don't see a mechanism by which to limit the number of execution steps
and/or amount of real time spent, nor a way to limit memory

autotest POC

2009-10-29T23:33:27Z

I've thrown together a proof of concept for using envjsrb (env.js on
Johnson) to run Jasmine (Javascript BDD framework) specs under autotest.
Screen shot at [link]
.
If you're interested in trying it, you need the latest smparkes.envjs
gem (has to be installed as a gem, the way autotest works ... at least

Trouble building native extension on Mac OS/X - Ruby 1.9.1

2009-10-24T23:19:51Z

Hi, I successfully installed the johnson gem on Ubuntu with Ruby
1.8.6, but on the Mac with ruby 1.9.1, I get compile errors.

sudo gem install johnson.

Just the tail of the failure

gcc -I. -I/usr/local/include/ruby-1.9. 1/i386-darwin10.0.0 -
I/usr/local/include/ruby-1.9.1 /ruby/backward -I/usr/local/include/

Installation on Windows?

2009-10-21T01:43:55Z

Tried 'gem install johnson' but it failed:

C:\Work\WatirServer\Mainpac\Ve rsion_3.1\Mainpac>gem install johnson
Building native extensions. This could take a while...
ERROR: Error installing johnson:
ERROR: Failed to build gem native extension.

C:/Work/ruby/bin/ruby.exe extconf.rb

Installing Johnson on a Joyent Solaris Accelerator

2009-10-14T18:19:18Z

After many hairs lost from the top of my head, I was able to get the
johnson gem to install on our Joyent Accelerator. I thought I would
post the how-to here in the hopes that the build scripts can be
improved for Solaris support.

[link]

tracemonkey integration

2009-10-14T00:28:13Z

I've integrated tracemonkey into my git repo at git://github.com/smparkes/john son.git
.
You should be able to test with
git clone git://github.com/smparkes/john son.git
cd johnson
git submodule update --init
rake
That will build and run the tests.
You can also install it as a gem off gemcutter as smparkes.johnson

tracemonkey port ...

2009-10-12T03:13:15Z

For what it's worth, I expect to have a tracemonkey port done fairly
soon.
I've implemented it beside the spidermonkey port so as not to disturb
the working C code. The build infrastructure is extended to build and
run tests for both interpreters.
Semantically it's not a big change. TM is the evolution of SM.

passing js functions to ruby procs?

2009-10-09T22:41:21Z

Looks like passings javascript functions to ruby procs doesn't work?
Running
method = Ruby.eval(" lambda { |a| 10 }");
print(method(10));
f = function(){}
print(method(f));
gives
10
(eval):1: warning: multiple values for a block parameter (0 for 1)
from ./johnson/lib/johnson/spidermo nkey/js_land_proxy.rb:16

stability?

2009-10-09T02:31:38Z

I've been looking at getting env.js hosted under ruby/spidermonkey ...
thinking of both ffi and johnson. Since johnson requires less work, I
looked at it first.

Definite stability issues. GIven Mathew's recent work, it looks like
it's around gc.

Any feel for how bad this issue is? Is it likely addressable? Or one

Can we replace selenium with johnson + ???

2009-09-27T10:51:28Z

It's great to see johnson and his macruby friend, and that's
reasonable to ask - can we just replace selenium with johnson and test
ajax-powered pages?

Brad Pitt in adult movies???

2009-09-21T23:37:55Z

Here is Brad Pitt with couple cuties... OMG!!!)) [link]

BDSM? Whats with this bondage/sadomasochism stuff, anyway?

2009-09-21T17:27:02Z

"BDSM" is an acronym of "B&D" (Bondage & Discipline), "D&S" (Dominance
& Submission), and "S&M" (sadomasochism). "BDSM" refers to any or all
of these things, and a lot of stuff besides.

Tying up your lover is BDSM; so is flogging that person, or bossing
that person around, or any of a thousand other things. BDSM is highly

I feel inclined to have sex

2009-09-21T12:22:31Z

My name is Anna Marley, I am a girl 21 years old.
Today I feel inclined to have sex.
Im here, someone wants to see me?
[link]

Relax for couple minutes

2009-09-21T11:33:34Z

Free videos.Not for kids ;)
Forget about your problems and relax watching this!
[link]

Seeking a friend?

2009-09-20T07:48:00Z

New level of dating networks: now you can find a friend in YOUR CITY.
Really! Just point a map! millions of members in the network!
TONNS of photos and videos from other members.
Find girls and boys for flirting, for sex or just for communication.
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[link]

REAL girls video chat

2009-09-19T22:10:20Z

Seeking a girl for chatting, flirting or something more? Maybe a
boy? :) Millions participants waiting for you in the sex chat. Find a
friend in Your city!

[link]

Seeking a partner for flirting ( and maybe more :) )

2009-09-19T00:22:00Z

Hi to community, Im first time here.
Life is boring and uninteresting, entertain me :)

Lets flirt or maybe something more?
Im here: [link]