Function assertNodeCount

test/jasmine/tests/range_selector_test.js:476–478

(query, cnt)

    afterEach(destroyGraphDiv);

    function assertNodeCount(query, cnt) {
        expect(d3SelectAll(query).size()).toEqual(cnt);
    }

    function checkActiveButton(activeIndex, msg) {
        d3SelectAll('.button').each(function(d, i) {