Function assert

test/jasmine/assets/check_transitions.js:89–110

(test)

// [ms since start of transition, selector, (attr|style), name of attribute, array of values to be found]
// Ex.: [0, '.point path', 'style', 'fill', ['rgb(31, 119, 180)', 'rgb(31, 119, 180)', 'rgb(31, 119, 180)']]
function assert(test) {
    var msg = 'at ' + test[0] + 'ms, selection ' + test[1] + ' has ' + test[3];
    var cur = [];
    d3SelectAll(test[1]).each(function(d, i) {
        if(test[2] === 'style') cur[i] = this.style[test[3]];
        else if(test[2] === 'attr') cur[i] = d3Select(this).attr(test[3]);
        else if(test[2] === 'datum') {
            cur[i] = d3Select(this).datum()[test[3]];
        }
    });
    switch(test[3]) {
        case 'd':
            assertEqual(cur, test[4], round, msg);
            break;
        case 'transform':
            assertCloseTo(cur, test[4], 3, extractNumbers, msg);
            break;
        default:
            assertEqual(cur, test[4], Lib.identity, msg);
    }
    return Promise.resolve(true);
}

function assertEqual(A, B, cb, msg) {
    var a = cb(A);