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Article Introduction：While not everyone is doing this, testing your application is one of the most basic parts of being a developer. Unit testing is the most common test. With unit testing, you can check if a class is running exactly as you expected. Sometimes, you are using third-party services in your application, and it's hard to set up everything for unit testing. This is when the simulation comes into play. Key Points Mocking is the process of creating a substitute for real objects in a unit test, which is especially useful when testing applications that rely heavily on dependency injection. Mockery is a library created by Pádraic Brady that can be used to mock objects in unit tests and is the default mock of PHPUnit

2025-02-20 comment 0  365

Article Introduction：PhpStorm was chosen for PHP unit testing because it provides a powerful IDE and built-in support for PHPUnit, making test writing and running more convenient and efficient. 1. Install and configure PHPUnit to ensure version compatibility. 2. Use smart code prompts to write test cases. 3. Run the test in the IDE and view the results. 4. Use the code coverage tool to ensure comprehensive testing. 5. Position and fix testing problems through debugging functions.

2025-05-20 comment 0  1014

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 comment 0  314

Article Introduction：In this post, we'll explore how to bring the PHP unit testing mindset, particularly the PHPUnit framework's data provider approach, into Go. If you're an experienced PHP developer, you’re likely familiar with the data provider model: gathering test d

2024-11-12 comment 0  443

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 comment 0  1006

Article Introduction：Core points Integrate JavaScript-style test observers into PHP projects, automate preprocessing of file conversions, and rerun unit tests when files change, thus improving development efficiency. Set up automated tests with tools such as PHPUnit and observe file modifications using PHPUnit-Watcher to ensure immediate feedback and error detection during development. Implementing preprocessing scripts in a PHP project allows syntax conversions similar to JavaScript Babel, improving compatibility and reducing manual encoding efforts. Configure the PHP test environment to automatically rebuild preprocessed files before testing, thus maintaining accurate generation

2025-02-09 comment 0  875

Article Introduction：Whether you are working for a large enterprise, a startup, or yourself, unit testing is not only useful, but is often indispensable. We use unit tests to test the code, but what if our tests are wrong or incomplete? What can we use to test our tests? Who will supervise the inspector? Key Points Variation testing is a technique that evaluates its quality with a small number of modified tests and can be used to test the test itself. It involves creating a "variant" or variant of the original test and checking if these changes are detected by the test. Humbug is a variant testing framework for PHP that can be used to generate code coverage. However, it is PHPUnit-specific and may have problems for users using different testing frameworks

2025-02-14 comment 0  466

Article Introduction：To achieve high test coverage for Laravel applications, the key is to write meaningful tests to verify core logic, boundary situations, and integration points. 1. Use functional tests to simulate real user interactions and cover request/response cycles, controllers, middleware, routing and database operations; 2. Write unit tests for complex business logic, service classes or tools, and use appropriate mocks to isolate the tested classes; 3. Use model factories and seeders to generate consistent test data, and keep the test efficient through RefreshDatabase; 4. Use PHPUnit or Pest for coverage, focusing on important paths rather than simply pursuing row count coverage. Balance different test types, focus on actual functions and dependency logic, and gradually improve test coverage.

2025-06-17 comment 0  262

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 comment 0  1123

Article Introduction：In Laravel unit tests, the logic to be tested can be isolated and side effects can be avoided by mocking dependencies. 1. Simulation dependency can improve test speed and stability; 2. External service behavior can be preset to verify code response; 3. Create mock objects using PHPUnit and Laravel auxiliary methods; 4. Select mock, stub or fake according to needs; 5. Keep the interface concise and use simulation reasonably to avoid excessive simulation.

2025-07-03 comment 0  573

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 comment 0  444

Article Introduction：Eric Elliott once wrote an article about JavaScript testing: JavaScript Testing: Unit Testing, Functional Testing, and Integration Testing, which explains different types of tests and when to use which test. This article will explore JavaScript functional testing in more depth and demonstrate using the Nightwatch.js library. Before we get started, let's review what functional testing is and why it is important. Simply put, functional testing is designed to ensure that the application works as expected from a user's perspective. What we are talking about here is not technical testing such as unit testing or integration testing. The goal here is to ensure that users can perform seamlessly

2025-02-17 comment 0  507

Article Introduction：The core of MySQL high availability solution lies in master-slave replication, automatic failure switching, data consistency guarantee and backup strategy. The specific steps are as follows: 1. Build master-slave replication, it is recommended to use asynchronous or semi-synchronous replication, and enable GTID and relaylog; 2. Introduce tools such as MHA and Orchestrator to achieve automatic switching of failures, pay attention to monitoring frequency and data integrity; 3. Regularly use pt-table-checksum to verify data consistency, and write operations are preferred to the main library; 4. Formulate backup strategies, backup full and hourly incremental daily, and regularly test the recovery process.

2025-07-06 comment 0  808

Article Introduction：The key to writing unit tests for Vue components is to choose the right tools and master the basic routines. 1.Vitest is suitable for modern projects and is fast; Jest is mature in ecology and has good compatibility. 2. When installing and configuring Vitest, you need to add plug-ins and set up scripts; Jest needs to create configuration files and install related dependencies. 3. When writing test cases, use mount to simulate real behavior. Note that await should be used for asynchronous operations. 4. During testing, mock external dependencies, deal with asynchronous rendering, avoid overtesting styles, and splitting complex logic. 5. Persisting in running the test after each modification can effectively reduce bugs.

2025-07-08 comment 0  258

Article Introduction：Chai is a popular JavaScript assertion library for improving the readability and expressivity of test code. Its core features include providing three assertion styles: 1. Assert style (similar to built-in assert but with more functions); 2. Should style (chain call, close to natural language); 3. Expect style (also supports chain call, which is more flexible than Should). Common usage scenarios include writing unit tests and integration tests, which are suitable for front-end and back-end projects, and help developers verify function return values, object properties, error throwing and variable types, etc. The steps to start using Chai are: 1. Install Chai; 2. Import and select an assertion style; 3. Write test cases. In addition, Ch

2025-06-24 comment 0  752

Article Introduction：Using SourceGenerators in C# projects can improve performance, reduce reflections, and optimize development experience by generating code during compilation. Specific methods include: 1. Create a class library project and reference the necessary NuGet package; 2. Implement the ISourceGenerator interface and override the Initialize and Execute methods; 3. Check the class with a specific Attribute in Execute and generate code. Common uses include attribute notification, serialization support, dependency injection registration, and constant generation. Debugging skills include outputting logs, attaching compilation processes, and writing unit test verification generation code. Be careful to avoid complex logic affecting the construction speed and select appropriate technologies such as reflection or IL based on the scene.

2025-07-04 comment 0  238

Article Introduction：SqlParameter Parameters.Add vs. AddWithValue: Choosing the Best MethodWhen working with SQL commands, you may encounter the need to add...

2025-01-10 comment 0  654

Article Introduction：In Dave The Diver, there are some creatures that are not easy to catch. Or, catch alive that is. The spider crab is one of those very species, making it seem like the only way to bring these crustaceans back up to land is to viciously crack them up w

2025-01-10 comment 0  777

Article Introduction：Conditional Column CountingConsider a table named "Jobs" structured as follows:jobId, jobName, Prioritywhere "Priority" is an integer between 1...

2025-01-10 comment 0  786