Function assertSubplot

test/jasmine/tests/plots_test.js:877–880

(type, n, msg)

        };

        function assertSubplot(type, n, msg) {
            expect(d3Select(gd).selectAll(subplotSelectors[type]).size())
                .toBe(n, msg + ' - ' + type);
        }

        // opts.cartesian and opts.gl2d should be arrays of subplot ids ('xy', 'x2y2' etc)
        // others should be counts: gl3d, geo, mapbox, map, parcoords, pie, ternary