react-native-web-internals
Version:
React Native for Web
89 lines (88 loc) • 4.04 kB
JavaScript
;
var __create = Object.create;
var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
var __getProtoOf = Object.getPrototypeOf, __hasOwnProp = Object.prototype.hasOwnProperty;
var __copyProps = (to, from, except, desc) => {
if (from && typeof from == "object" || typeof from == "function")
for (let key of __getOwnPropNames(from))
!__hasOwnProp.call(to, key) && key !== except && __defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
return to;
};
var __toESM = (mod, isNodeMode, target) => (target = mod != null ? __create(__getProtoOf(mod)) : {}, __copyProps(
// If the importer is in node compatibility mode or this is not an ESM
// file that has been converted to a CommonJS file using a Babel-
// compatible transform (i.e. "__esModule" has not been set), then set
// "default" to the CommonJS "module.exports" for node compatibility.
isNodeMode || !mod || !mod.__esModule ? __defProp(target, "default", { value: mod, enumerable: !0 }) : target,
mod
));
var import_jsx_runtime = require("react/jsx-runtime"), React = require("react"), ReactDOM = __toESM(require("react-dom")), import_test_utils = require("react-dom/test-utils"), import__ = __toESM(require(".."));
function createRoot(rootNode) {
return {
render(element) {
ReactDOM.render(element, rootNode);
}
};
}
describe("useStable", function() {
var root, rootNode, spy = {}, TestComponent = function(param) {
var { initialValueCallback } = param, value = (0, import__.default)(initialValueCallback);
return spy.value = value, null;
};
beforeEach(function() {
spy = {}, rootNode = document.createElement("div"), document.body.appendChild(rootNode), root = createRoot(rootNode);
}), afterEach(function() {
root.render(null), document.body.removeChild(rootNode), rootNode = null, root = null;
}), test("correctly sets the initial value", function() {
var initialValueCallback = function() {
return 5;
};
(0, import_test_utils.act)(function() {
root.render(/* @__PURE__ */ (0, import_jsx_runtime.jsx)(TestComponent, {
initialValueCallback
}));
}), expect(spy.value).toBe(5);
}), test("does not change the value", function() {
var counter = 0, initialValueCallback = function() {
return counter++;
};
(0, import_test_utils.act)(function() {
root.render(/* @__PURE__ */ (0, import_jsx_runtime.jsx)(TestComponent, {
initialValueCallback
}));
}), expect(spy.value).toBe(0), (0, import_test_utils.act)(function() {
root.render(/* @__PURE__ */ (0, import_jsx_runtime.jsx)(TestComponent, {
initialValueCallback
}));
}), expect(spy.value).toBe(0);
}), test("only calls the callback once", function() {
var counter = 0, initialValueCallback = function() {
return counter++;
};
(0, import_test_utils.act)(function() {
root.render(/* @__PURE__ */ (0, import_jsx_runtime.jsx)(TestComponent, {
initialValueCallback
}));
}), expect(counter).toBe(1), (0, import_test_utils.act)(function() {
root.render(/* @__PURE__ */ (0, import_jsx_runtime.jsx)(TestComponent, {
initialValueCallback
}));
}), expect(counter).toBe(1);
}), test("does not change the value if the callback initially returns null", function() {
var counter = 0, initialValueCallback = function() {
return counter === 0 ? (counter++, null) : counter++;
};
(0, import_test_utils.act)(function() {
root.render(/* @__PURE__ */ (0, import_jsx_runtime.jsx)(TestComponent, {
initialValueCallback
}));
}), expect(spy.value).toBe(null), (0, import_test_utils.act)(function() {
root.render(/* @__PURE__ */ (0, import_jsx_runtime.jsx)(TestComponent, {
initialValueCallback
}));
}), expect(spy.value).toBe(null);
});
});
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