Sputnik (JavaScript conformance test)

Sputnik
Owner	Google Inc.
Created by	Christian Plesner Hansen, Sandholm
URL	sputnik.googlelabs.com
Commercial	No
Registration	No

Sputnik is a JavaScript conformance test suite. The purpose of the test suite is to determine how well a JavaScript implementation adheres to the ECMA-262 specification, 5th edition, looking only at those features that were also present in the 3rd edition.^[1] It contains over 5000 tests that touch all aspects of the JavaScript language.^[1]^[2]

The test was created in Russia for testing the conformance of the V8 JavaScript engine used in Google Chrome.^[1]

As part of phasing out Google Labs, Google will be shutting down Sputnik by August 31, 2011. All current Sputnik tests have been incorporated into Ecma's test262 test suite.

Browsers that do not pass

There is currently no browser passing the Sputnik test.^[2]

Desktop browsers

Scores represent the number of failed tests - a perfect score is 0 (100%).

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**Desktop browser results in Sputnik**
Browser name	Score of current release	Score of preview release
Internet Explorer	Internet Explorer 9 72/16436 (99.56%) ^{[citation needed]}	Internet Explorer 10 PP2 71/16436 (99.57%) ^{[citation needed]}
Google Chrome	Google Chrome 12.0.742.112 136/16436 (99.17%) ^{[citation needed]}	Google Chrome 15.0.874.12 128/16436 (99.22%)
Safari	Safari 5.1 142/16436 (99.14%) ^{[citation needed]}	No preview available
Mozilla Firefox	Firefox 6.0 128/16436 (99.22%) ^{[citation needed]}	Aurora 8.0a2 (2011-09-13) 94/16436 (99.43%)
Opera	Opera 11.51 (build 1087) 80/16436 (99.51%)	Opera 12.00 (build 1065) 79/16436 (99.52%)

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Ecmascript testsuite

Google has handed the test from Sputnik testsuite to Ecma International for inclusion in its Ecmascript 262 testsuite. Some sputnik tests however have been found to have issues and are not fully conforming to Ecmascript version 5 specification.^[3]

Mobile browsers