@netdata/netdata-ui
Version:
netdata UI kit
44 lines (43 loc) • 1.57 kB
JavaScript
;
var _react = _interopRequireDefault(require("react"));
var _testUtilities = require("testUtilities");
var _index = _interopRequireDefault(require("./index"));
function _interopRequireDefault(e) { return e && e.__esModule ? e : { "default": e }; }
var observe;
var unobserve;
var disconnect;
beforeEach(function () {
observe = jest.fn();
unobserve = jest.fn();
disconnect = jest.fn();
global.IntersectionObserver = jest.fn(function () {
return {
observe: observe,
unobserve: unobserve,
disconnect: disconnect
};
});
});
it("renders", function () {
var _renderWithProviders = (0, _testUtilities.renderWithProviders)(/*#__PURE__*/_react["default"].createElement(_index["default"], {
fallback: "invisible"
}, "visible")),
queryByText = _renderWithProviders.queryByText;
expect(queryByText("invisible")).toBeVisible();
expect(queryByText("visible")).not.toBeInTheDocument();
});
it("calls the observers", function () {
var _renderWithProviders2 = (0, _testUtilities.renderWithProviders)(/*#__PURE__*/_react["default"].createElement(_index["default"], {
fallback: "invisible"
}, "visible")),
unmount = _renderWithProviders2.unmount,
container = _renderWithProviders2.container;
expect(observe).toBeCalledWith(container.firstChild);
expect(observe).toBeCalledTimes(1);
expect(unobserve).toBeCalledTimes(0);
expect(disconnect).toBeCalledTimes(0);
unmount();
expect(observe).toBeCalledTimes(1);
expect(unobserve).toBeCalledTimes(1);
expect(disconnect).toBeCalledTimes(1);
});