Announcing TC39 ECMAScript Test Suite Project - Test262

Jonathan Chetwynd j.chetwynd at
Mon Jun 21 01:40:29 PDT 2010


is the Test262 test suite more similar to W3C  suites or might there  
be an acidic element?

ie something the public might understand?


Jonathan Chetwynd
On 21 Jun 2010, at 06:52, Allen Wirfs-Brock wrote:

> At the last TC39 meeting we agreed to launch a project to develop an  
> official ECMAScript specification test suite that developers and  
> users can use to verify that implementations accurately implement  
> the standard.  The hope is that we can integrate the various  
> existing test suites along with new tests to create a single  
> comprehensive test suite for the ECMAScript standard.
> Because of the nature of Ecma's intellectual property policies, only  
> Ecma members can directly contribute code to the project.  However,  
> the project code will be BSD licensed and development will be  
> carried out in a publically accessible manner.  The working name of  
> the test suite is Test262 and I'll be serving as the initial project  
> editor. The source code of the project will be hosted  in the TS39  
> repository at  (coming soon) and issues  
> will be tracked at .  In  
> addition, I'm setting up a separate  test262-discuss mailing list  
> for topics relating to ECMAScript testing and the Test262 test  
> suite. Test262-discuss is open to the public. You can subscribe at t
> I'm now in the early stages of organizing  the project  
> infrastructure and collecting initial code contributions from Ecma  
> members. To kick things off, Microsoft is contributing the  
> ES5Confrom test suite as well as a significant number of additional  
> tests. Christian Plesner Hansen, leader of the Sputnik project ,  
> reports that Google will contribute their Sputnik code.  Other TC39  
> members have all been supportive of this effort and I anticipate  
> that we will receive additional contributions from them in the near  
> future.
> So, if you're interested in ECMAScript testing subscribe to test262- 
> discuss and join in.  After people have had a couple of days to  
> subscribe, I'll be kicking things off with some of my ideas about  
> how to structure and organize the Test262 suite. Please also share  
> your thoughts.
> Thanks,
> Allen Wirfs-Brock
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