Function checkDashCount

test/jasmine/tests/parcoords_test.js:1542–1552

(dashArray, intervals)

    function checkDashCount(dashArray, intervals) {
        // no-selection dasharrays have 2 entries:
        //   0 (no initial line) and a final gap as long as the whole bar
        // single-bar dasharrays have 4 entries:
        //   0 (no initial line), gap to first bar, first bar, final gap
        // each additional interval adds 2 entries before the final gap:
        //   middle gap and new bar

        var segmentCount = 2 + 2 * intervals;
        expect(dashArray.length).toBe(segmentCount, dashArray);
    }

    it('@gl snaps ordinal constraints', function(done) {
        var newDashArray;