Which EPUB readers do you think would perform the best in the W3C's EPUB Tests?

[eluyasa]

EPUB 3.4 Tests: https://w3c.github.io/epub-tests/

Not a lot of people or developers do these tests. Even in 3.3, it was only a few developers who submitted them. And pretty much all of them had many fails.

The testing is open to everyone, as they say, "Everyone is welcome to contribute tests".

There are hundreds of tests. Even trying the first few, no app I use passed all of them.

Nothing serious, just curious which apps or softwares would be the closest to what W3C thinks a proper EPUB reader should be like. As in, which would pass the most tests?

[JSWolf]

Where is the pre-built ePub to use for testing?

[DNSB]

For what it may be worth:

2. Introduction

w3c/epub-tests is the repository for the tests to validate the implementability of W3C's EPUB 3 specifications, specifically the core EPUB 3.4 (the specification for the EPUB format itself) and the EPUB Reading Systems 3.4 (the specification for applications that read and render EPUB files). (The test suite references and the results for EPUB 3.3 are also available.)

As is made clear in the documentation, there is no single test ePub but rather a set of individual files for testing specific features. You can use the generateEpubs.sh file to generate the ePubs for testing under Linux or MacOS. For Windows, it looks as if PowerShell should be able to manage the task. I cheated and simply stored the files/subdirectories into a .zip file and then renamed the .zip file to .epub.