Sputnik was a
JavaScript
JavaScript (), often abbreviated as JS, is a programming language that is one of the core technologies of the World Wide Web, alongside HTML and CSS. As of 2022, 98% of Website, websites use JavaScript on the Client (computing), client side ...
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
Russia (, , ), or the Russian Federation, is a List of transcontinental countries, transcontinental country spanning Eastern Europe and North Asia, Northern Asia. It is the List of countries and dependencies by area, largest country in the ...
for testing the conformance of the
V8 JavaScript engine
V8 is a free and open-source JavaScript engine developed by the Chromium Project for Google Chrome and Chromium web browsers. The project’s creator is Lars Bak. The first version of the V8 engine was released at the same time as the first versi ...
used in
Google Chrome
Google Chrome is a cross-platform web browser developed by Google. It was first released in 2008 for Microsoft Windows, built with free software components from Apple WebKit and Mozilla Firefox. Versions were later released for Linux, macOS ...
.
As part of phasing out
Google Labs
Google Labs was an incubator created by Google to test and publicly demonstrate new projects. It was online from early 2002 to mid-2011.
Google described Google Labs as "a playground where our more adventurous users can play around with prototyp ...
, Google has shut down Sputnik. All current Sputnik tests have been incorporated into
ECMA's Test262 test suite.
Browsers that do not pass
As an example of a browser that does not pass,
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 (100