Sputnik (JavaScript conformance test)
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. It contained over 5000 tests that touched all aspects of the JavaScript language.
The test was created in Russia for testing the conformance of the V8 JavaScript engine used in Google Chrome.
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
As example, Konqueror 4.10.1 still only passes 91.8% of the 11573 tests.Desktop browsers
Scores represent the number of failed tests – a perfect score is 0.| Browser name | Score of current release | Score of preview release |
| Internet Explorer | Internet Explorer 11.0.9600.17420 | Internet Explorer 11.0.9879.0 |
| Google Chrome | Google Chrome 30.0.1599.66 | Google Chrome 32.0.1700.39 |
| Safari | Safari 6.0.2 | No preview results available |
| Mozilla Firefox | Firefox 33.1.1 | Firefox 68.0a1 |
| Opera | Opera 11.60 | Opera 12.00 |