Sputnik (JavaScript conformance test)

Sputnik
Owner	Google Inc.
Created by	Christian Plesner Hansen, Sandholm
URL	test262.ecmascript.org/
Commercial	No
Registration	No

Sputnik was a JavaScript conformance test suite. The purpose of the test suite was 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 contained over 5000 tests that touched 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 has shut down Sputnik. 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%)	Internet Explorer 10 PP2 6/16436 (99.96%)
Google Chrome	Google Chrome 19.0.1084.52 25/16436 (99.85%)	Google Chrome 16.0.912.36 415/16436 (97.48%)
Safari	Safari 5.1 772/16436 (95.3%)	No preview available
Mozilla Firefox	Firefox 8.0 164/16436 (99%)	Firefox 9.0 164/16436 (99%)
Opera	Opera 11.60 (build 1185) 1/16436 (99.99%)	Opera 12.00 (build 1191) 1/16436 (99.99%)

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Ecmascript testsuite

Google has handed the tests from Sputnik test suite to Ecma International for inclusion in its ECMAScript 262 test suite. Some Sputnik tests however have been found to have issues and do not conform to ECMAScript 5th edition specification.^[3]

Mobile browsers