Found a total of 10000 related content
Mock your Test Dependencies with Mockery
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
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385
Methods for PHP unit testing using PhpStorm
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
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1022
How to write unit tests for WordPress code
Article Introduction:Writing WordPress unit tests requires using PHPUnit and WordPress test suites. 1. Set up the environment: Install PHP and Composer, install PHPUnit through Composer, clone the wordpress-develop repository, configure a dedicated database, and use wpscaffold to generate test files. 2. Understand the test structure: inherit the WP_UnitTestCase class, the test method starts with test_, and use the factory class to create test data to avoid real HTTP requests. 3. Write effective tests: cover normal and boundary situations, verify function behavior, hook triggers, and shortcode output, keep the test independent and focused. 4. Run and debug:
2025-07-25
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238
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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327
From PHPUnit to Go: Data-Driven Unit Testing for Go Developers
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
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459
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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1021
What is unit testing for PHP functions?
Article Introduction:Unit testing in PHP refers to writing small, independent tests for separate functions to verify that their behavior is as expected. For example, when testing an addition function using the PHPUnit framework, you can write the following test case: publicfunctiontestAddReturnsSumOfTwoNumbers(){$this->assertEquals(5,add(2,3));}, which verifies whether the output of add(2,3) is 5. The importance of unit testing includes: 1. Early detection of errors; 2. Support for secure reconstruction; 3. Documented function behavior. The steps to start using PHP unit test are: 1. Install through Composer
2025-07-21
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573
How to Write JavaScript-Style Test Watchers in PHP
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
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904
Troubleshooting MySQL Replication Delays and Lag
Article Introduction:Common causes and troubleshooting methods for MySQL master-slave replication delay are as follows: 1. Check the network status, use ping/traceroute to test delays and packet loss, use telnet to test port connectivity, and test the actual bandwidth through iperf; 2. Analyze the slave library processing capabilities, check the Seconds_Behind_Master field, monitor the CPU, memory, and IO usage, and enable multi-threaded replication to improve parallel capabilities; 3. Confirm the write pressure of the master library, use SHOWPROCESSLIST to check long-term write operations, optimize slow queries, and reduce replication link load; 4. Check the rationality of replication configuration, adjust sync_relay_log, relay_log_recov
2025-07-28
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927
Testing Your Tests? Who Watches the Watchmen?
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
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493
How to write a unit test in Laravel?
Article Introduction:The key to writing Laravel unit tests is to understand its mechanism and structure. 1. Create test classes and can be generated using the Artisan command; 2. Write test methods starting with test_ and use assertion verification logic; 3. Introduce RefreshDatabasetrait when it comes to databases to automatically manage data state; 4. Run tests can be run through the phpunit or phpartisantest command and support the execution of specified classes or methods.
2025-07-22
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535
Implementing MySQL Database Failover Testing
Article Introduction:The core of database failover testing is to ensure that the system can automatically switch the backup library and continue to run when the main library fails. 1. Before testing, you need to use SHOWSLAVESTATUS\G to check the master-slave replication status to avoid data inconsistencies; 2. Simulation failures should be closer to real scenarios, such as cutting off ports, power outages, etc.; 3. After switching, you need to verify whether the application can connect to the new master library. It is recommended to enable automatic reconnection, use VIP and test the read and write functions; 4. After failure recovery, you need to repair the old master library, pay attention to clearing the conflict configuration and rebuilding the replication link.
2025-07-24
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135
How to write a unit test for a Vue component that uses Vuex?
Article Introduction:Create a test-specific Vuexstore and initialize it with createStore; 2. Inject store through mount's global.plugins; 3. Use jest.fn() to simulate actions to verify calls; 4. Test the responsiveness of the component when the store state changes; 5. Optionally mock the store partially or use @testing-library/vue; finally implement isolated and reliable unit testing to ensure that the component interacts correctly with Vuex, the test is complete and maintainable.
2025-08-03
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411
Unit Testing JavaScript with Jest and React Testing Library
Article Introduction:Jest and ReactTestingLibrary are the gold standard for React application testing. Jest provides test runs, assertions, _mock_ and coverage reports. ReactTestingLibrary tests components by simulating user behavior and accessibility queries. If you use CreateReactApp, both are built in. Custom configurations require installing jest, @testing-library/react and setting jest.config.js and Babel configurations; unit tests use test() and expect() to verify function logic, such as formatPrice function formatting results; component test pass r
2025-07-25
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777
How do I achieve high test coverage in my Laravel application?
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
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268
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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1139
Unit testing with mocked dependencies in Laravel
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
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601
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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451
Troubleshooting MySQL Replication Setup Errors
Article Introduction:Common causes and troubleshooting methods for MySQL master-slave replication: 1. Configuration errors require checking whether the main library bind-address is correct. The network is not connected. Telnet can test port connectivity and open firewall rules; 2. The permissions do not correspond to confirm that the replication account has REPLICATIONSLAVE permissions and verify the password and login IP; 3. The main library does not enable binary logs and ensure that the server-id is unique; 4. When the data is inconsistent, you can view Relay_Master_Log_File and Exec_Master_Log_Pos to adjust the synchronization position or re-import the data.
2025-07-20
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238