react-stable-ref/lib/useRenderCount.spec.js

An assortment of utilities for testing against unstable references in React

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
var react_1 = __importDefault(require("react"));
var react_2 = require("@testing-library/react");
var useRenderCount_1 = __importDefault(require("./useRenderCount"));
var UnstableButton = function () {
    var count = useRenderCount_1.default();
    return react_1.default.createElement("button", { type: "button" }, count);
};
describe('useRenderCount', function () {
    it('should initialize the count at 1', function () {
        var queryByText = react_2.render(react_1.default.createElement(UnstableButton, null)).queryByText;
        expect(queryByText('1')).not.toBe(null);
    });
    it('should count every render correctly', function () {
        var _a = react_2.render(react_1.default.createElement(UnstableButton, null)), rerender = _a.rerender, queryByText = _a.queryByText;
        rerender(react_1.default.createElement(UnstableButton, null));
        rerender(react_1.default.createElement(UnstableButton, null));
        rerender(react_1.default.createElement(UnstableButton, null));
        expect(queryByText('4')).not.toBe(null);
    });
});
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