Function assertTraceCount

test/jasmine/tests/histogram_test.js:1257–1259

(n)

        it('can recalc after the first trace is hidden', function(done) {
            function assertTraceCount(n) {
                expect(gd.querySelectorAll('.trace').length).toBe(n);
            }

            Plotly.newPlot(gd, [{
                x: [1, 2, 3], type: 'histogram'