jestjs

问题 I'm trying to implement JEST in my cra but I'm facing a problem : FAIL src/App.test.js ● Test suite failed to run Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e.g. it's not plain JavaScript. By default, if Jest sees a Babel config, it will use that to transform your files, ignoring "node_modules". Here's what you can do: • To have some of your "node_modules" files transformed, you can specify a custom

问题 I'm trying to implement JEST in my cra but I'm facing a problem : FAIL src/App.test.js ● Test suite failed to run Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e.g. it's not plain JavaScript. By default, if Jest sees a Babel config, it will use that to transform your files, ignoring "node_modules". Here's what you can do: • To have some of your "node_modules" files transformed, you can specify a custom

问题 I was trying to unit test a function in node which throws an error regardless of any condition. Here is my node function definition. public testFunction() { throw new Error('Test Error'); } As you can see this function always throws an error whenever it has been called. I tried to execute unit testing to this function using jest .toThrow(error?) method. I was not able to unit test the function as expected. The below mentioned are the test cases that I wrote and have attached the screenshot of

问题 I wrote a React application and used jest to write unit tests. when I run it by "jest --config=jest.config.json --watch" I get the following error: Test suite failed to run /home/user/Projects/react-game/src/Square.css:1 ({"Object.> ":function(module,exports,require,__dirname,__filename,global,jest){.bluePawn, .blueMasterPawn, .redPawn, .redMasterPawn { ^ SyntaxError: Unexpected token . at ScriptTransformer._transformAndBuildScript (node_modules/jest-runtime/build/ScriptTransformer.js:289:17)

问题 i am new in react can any one help us to write unit test code for below react code & basically i write test case for this below code but statement & functions coverage very low due to these code campaignGroupListing its is arrray of object in this code i find matching data and updated id record append in a new array ."campaignGroupListing.findIndex((item) => item.id === parseInt(id)); campaignGroupListing.splice(index, 1); campaignGroupListing.splice(index, 0, newArr); " import React, {

问题 I have a very simple test: describe('sanity', () => { it('sanity', () => { expect(true).toBeTruthy() }) }) And I'm receiving the following error: FAIL spec/javascript/sanity_test.js ● Test suite failed to run Jest encountered an unexpected token This usually means that you are trying to import a file which Jest cannot parse, e.g. it's not plain JavaScript. By default, if Jest sees a Babel config, it will use that to transform your files, ignoring "node_modules". Here's what you can do: • To

问题 On default jest allows you to simply access jasmine globally. But as soon as you switch the testRunner to jest-circus , jasmine is undefined. Following is a minimal, reproducible example: babel.config.js module.exports = { presets: [["@babel/preset-env", { targets: { node: "current" } }]], }; jasmine.spec.js it("check jasmine", () => { console.log(jasmine); }); jest.config.js module.exports = { rootDir: ".", testRunner: "jest-circus/runner", }; package.json { "name": "test-jest", "version":

问题 When I create a test for my connected React component where I want to test the mapStateToProps logic I run into a problem which I'm not sure how to solve. Error message Expected: 1 Received: undefined 24 | it('should show previously rolled value', () => { 25 | // test that the state values were correctly passed as props > 26 | expect(wrapper.props().lastRolledNumber).toBe(1); When I check the wrapper.props() it only returns the store object and no properties. To make sure it's not my code I

问题 When I create a test for my connected React component where I want to test the mapStateToProps logic I run into a problem which I'm not sure how to solve. Error message Expected: 1 Received: undefined 24 | it('should show previously rolled value', () => { 25 | // test that the state values were correctly passed as props > 26 | expect(wrapper.props().lastRolledNumber).toBe(1); When I check the wrapper.props() it only returns the store object and no properties. To make sure it's not my code I

问题 When I create a test for my connected React component where I want to test the mapStateToProps logic I run into a problem which I'm not sure how to solve. Error message Expected: 1 Received: undefined 24 | it('should show previously rolled value', () => { 25 | // test that the state values were correctly passed as props > 26 | expect(wrapper.props().lastRolledNumber).toBe(1); When I check the wrapper.props() it only returns the store object and no properties. To make sure it's not my code I