// test code to generate errors in https://www.mediawiki.org/wiki/Extension:MultimediaViewer
// after running, you need to press "Next" twice (due to preloading) to see an error

function unfix ( provider, errorMessage ) {
    provider.api = { get: function() {
        return $.Deferred().reject( errorMessage || 'Failed!' );
    } };
};

function fix ( provider ) {
    provider.api = new mw.Api();
};

// break image loading
// just delete "un" to fix
unfix( mw.mmv.bootstrap.viewer.thumbnailInfoProvider );


// break metadata loading
// just delete "un" to fix
unfix( mw.mmv.bootstrap.viewer.imageInfoProvider );