devextreme
Version:
JavaScript/TypeScript Component Suite for Responsive Web Development
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JavaScript
/**
* DevExtreme (esm/__internal/core/utils/conditional_invoke.test.js)
* Version: 25.2.7
* Build date: Tue May 05 2026
*
* Copyright (c) 2012 - 2026 Developer Express Inc. ALL RIGHTS RESERVED
* Read about DevExtreme licensing here: https://js.devexpress.com/Licensing/
*/
import {
describe,
expect,
it,
jest
} from "@jest/globals";
import {
invokeConditionally
} from "./conditional_invoke";
describe("invokeConditionally", () => {
[false, true].forEach(isPromise => {
[{
cancelResult: false,
expectedCallback: "callback"
}, {
cancelResult: true,
expectedCallback: "cancelCallback"
}].forEach(_ref => {
let {
cancelResult: cancelResult,
expectedCallback: expectedCallback
} = _ref;
it(`should invoke ${expectedCallback} (isPromise=${isPromise}, cancelResult=${cancelResult})`, async () => {
const callback = jest.fn();
const cancelCallback = jest.fn();
invokeConditionally(isPromise ? Promise.resolve(cancelResult) : cancelResult, callback, cancelCallback);
await new Promise(process.nextTick);
if ("callback" === expectedCallback) {
expect(callback).toHaveBeenCalled();
expect(cancelCallback).not.toHaveBeenCalled()
} else {
expect(cancelCallback).toHaveBeenCalled();
expect(callback).not.toHaveBeenCalled()
}
})
})
});
it("should invoke the callback when cancelResult is a rejected promise", async () => {
const callback = jest.fn();
const cancelCallback = jest.fn();
invokeConditionally(Promise.reject(new Error("test error")), callback, cancelCallback);
await new Promise(process.nextTick);
expect(cancelCallback).not.toHaveBeenCalled();
expect(callback).toHaveBeenCalled()
});
it("should not throw when cancelCallback is undefined and cancelResult is true", () => {
const callback = jest.fn();
expect(() => invokeConditionally(true, callback)).not.toThrow()
})
});