Found a total of 10000 related content
How to Test stopPropagation() in React Testing Library
Article Introduction：Introduction: Testing stopPropagation() in React
Correctly implementing stopPropagation() is vital when dealing with nested click events in React. Instead of directly verifying stopPropagation()'s call, focus on testing its outcome: does the event
2025-01-29
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806
React Basics~unit test/custom hook
Article Introduction：When I test a custom hook component, I use a renderHook imported from @testing-library/react' and an act imported fromreact-dom/test-utils'.
?src/App.tsx
import "./App.css";
import Counter from "./component/counter/Counter";
2024-11-01
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1031
React Basics~unit test/ui
Article Introduction：When I test current code, which is unit test, I use some tools. They are jest and react-testing-library.
?src/Example.js
import Greet from "./components/Greet";
const Example = () => {
return ;
};
export default Example;
?s
2024-10-20
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314
How to efficiently load Doctrine test data in Symfony application? Use Composer and liip/test-fixtures-bundle to do it!
Article Introduction：When developing Symfony applications, the loading efficiency of test data directly affects the execution speed and overall development efficiency of test cases. Recently, I encountered this problem when working on a project: every time I run a test case, the Doctrine test data is loaded for too long, which seriously affects the development progress. To solve this problem, I tried various methods and finally installed the liip/test-fixtures-bundle library through Composer, which successfully improved the loading efficiency of the test data.
2025-04-17
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511
React Basics~unit test/user event
Article Introduction：When I test a user event, I use the fireEvent function of the react-testing-library.
?src/Example.js
import Counter from "./components/Counter";
const Example = () => {
const originCount = 0;
return &
2024-10-21
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555
How can you effectively test Go code using the built-in testing package?
Article Introduction：The key to Go code testing is to organize the test files correctly, write clear assertions, and utilize standard library tools. 1. The test file should be in the same package as the code being tested, and the file name ends with _test.go; 2. The test function must start with Test and be accompanied by a descriptive name; 3. Creating subtests with t.Run() can improve output readability and test flexibility; 4. Use the getest command when running the test, and run specific tests with the -run flag; 5. It is recommended to use a table-driven test mode to define multiple test cases through structure slices, making the test logic simpler and easier to expand. Following these practices can effectively improve the quality and efficiency of Go code testing.
2025-06-10
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747
JavaScript Testing Tool Showdown: Sinon.js vs testdouble.js
Article Introduction：When unit testing real-world code, many situations make the test difficult to write. How to check if a function is called? How to test Ajax calls? Or code using setTimeout? At this time, you need to use Test Stand-in-Replace the code to make it easier to test within difficult to test.
Sinon.js has been the actual standard for creating test stand-ins in JavaScript testing for years. It is an essential tool for any JavaScript developer who writes tests, because without it, it is nearly impossible to write tests for real applications.
Recently, a new library called testdouble.js is on the rise. It has a
2025-02-16
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1123
Use test data in Java with DataFaker
Article Introduction：DataFaker is a library for Java that allows you to easily generate test data. This can be useful in situations where data is needed to generate tests, a demonstration, or simply to fill a database with data.
2024-11-25
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1009
API Client TDD with Mocked Responses
Article Introduction：This tutorial expands on a previous installment, focusing on building a robust and well-tested Diffbot API client library using PHPUnit and TDD (Test-Driven Development). The previous parts covered basic functionality and abstract class testing. Thi
2025-02-18
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1006
How can Vue Test Utils be used for unit and component testing in Vue applications?
Article Introduction：VueTestUtils is the officially recommended Vue component test library, which is used to mount and interact Vue components in an isolated environment to improve test coverage and code confidence. Use steps include: 1. Set up the test environment, install dependencies such as @vue/test-utils, jest or mocha and configure jest.config.js; 2. Write unit tests, mount components through mount method, verify rendering results, user interaction and event triggering; 3. Handle props and events, pass data through propsData and verify whether the events are correctly issued; 4. Test slots and subcomponents, you can pass in custom slot content, select shallow mount or complete mount subcomponents to meet the different
2025-06-19
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444
libv is two
Article Introduction：I share my experience with the "Lubuv" project, which explores the integration of the Libuv ASSINCROONA LIBRARY (C) with moon to create a simplified HTTP server. The idea was to test the abilities of Libuv without dipping deeply and
2025-01-28
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1116
Introduction to Jest: Unit Testing, Mocking, and Asynchronous Code
Article Introduction：Introduction to Jest
Jest is a library for testing JavaScript code.
It’s an open source project maintained by Facebook, and it’s especially well suited for React code testing, although not limited to that: it can test any JavaScript code. Its
2024-11-01
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831
Testing ReactJS Context - A Guide with test-doubles
Article Introduction：In this post, I'll walk through my thought process for testing React components that rely on context, using Testing Library. My aim is to explore a different approach to testing these components, examining the pros and cons of using mocks versus test
2024-12-05
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1070
How to repair Photos library on Mac
Article Introduction：When encountering the problem of photo library corruption, you can try the following methods to repair it in turn: 1. Use the repair function that comes with the photo (close the application and hold down the Option Command key to rebuild the image library); 2. The old version of macOS can manually check the disk permissions; 3. Create a new user to test whether the photo library is normal; 4. The final solution is to delete the original library after backup and rebuild. Most cases can be solved through the first few methods. When severe damage is severe, backup and reconstruction will be used. You must ensure data security before operation.
2025-07-10
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650
7 Hidden iPhone Apps You Didn't Know Existed
Article Introduction：Your iPhone has hidden apps that work behind the scenes to filter SMS messages, trust computers, deal with payments, test ads, and perform other actions. You won't find any of them in your App Library, but there are tricks you can employ to unlock an
2025-06-13
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1019
How can you build and publish a Vue component library?
Article Introduction：You can build and publish Vue component libraries by creating reusable components, packaging them into libraries, and publishing them to npm. First, set up the project structure, use VueCLI or Vite to create the project, and configure the src/components folder and the optional src/index.js entry file, and configure the library build options in vue.config.js. Second, build reusable components with props and slots, such as using props to define button types and allowing content customization through slots to ensure that components are independent and flexible. Third, package and test the library locally, run the build command to generate the dist folder, and use npmlink or yarnlink to test component functions in other projects.
2025-06-13
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203
In Vue.js, how to implement string to object?
Article Introduction：In Vue.js, implementing string-to-object conversion requires the JavaScript JSON.parse() method. However, JSON.parse() is sensitive to invalid JSON strings and can be handled gracefully by: Catching JSON parsing errors using the try...catch block. Handle errors in catch block, provide friendly error prompts or use default values. For more complex scenarios, consider using a more powerful JSON parsing library that supports schema verification. Test string input well, write clear error handling logic, and consider using a stronger JSON parsing library to improve code stability and maintainability
2025-04-07
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463
How do I test Python code?
Article Introduction：To test Python code, use the built-in unittest framework or the cleaner pytest library. 1. When using unittest, you need to create a test class inherited from unittest.TestCase, write a method that starts with test_, and use assertions to verify the result. 2.pytest does not require inheriting classes, just write a function that starts with test_ and use a normal assert statement. 3. During testing, boundary conditions, invalid input and exception handling should be covered, such as checking for zero-deletion errors. 4. Test automation can be achieved through Git hooks, CI/CD tools (such as GitHubActions) or IDE integration to ensure that each submission is verified, thereby improving code quality.
2025-06-24
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626
