10 Mar 2025

This article demonstrates creating mocks and stubs in Go for unit testing. It emphasizes using interfaces, provides examples of mock implementations, and discusses best practices like keeping mocks focused and using assertion libraries. The articl

08 Jul 2025

In Go projects, the method of mock database connection mainly includes using interface abstraction, third-party mock libraries, and in-memory databases or stubbing tools. 1. Use interface to abstract database operations, encapsulate database methods by defining interfaces, making the service structure depend on interfaces rather than specific types, and replace it with mock objects when testing. The advantage is to decouple business logic and database dependencies, and the disadvantage is to manually define the interface; 2. Use third-party mock libraries such as stretchr/testify mock packages to quickly build mock objects and set return values, which is suitable for projects with high test coverage requirements; 3. Use in-memory databases (such as SQLite memory mode) or go-sqlmock and other tools to replace them.

17 Aug 2025

ToeffectivelymockobjectsinJava,usetheMockitoframeworktoisolatecodeundertestbysimulatingdependencies;first,addMockitotoyourprojectviaMavenorGradle,thencreatemocksusingMockito.mock()orthe@MockannotationinitializedwithMockitoAnnotations.openMocks()orthe

12 Aug 2025

In Go, dependencies are defined by interfaces and using manual or generated simulations to implement efficient unit testing. 1. Define the interface to support dependency injection, such as the EmailSender interface; 2. For simple scenarios, write manually simulated structures and achieve expected behavior; 3. For complex or large interfaces, use mockgen and other tools to generate mocks to improve efficiency and consistency; 4. Avoid directly imitating standard libraries or specific types, and external dependencies should be encapsulated through custom interfaces, such as using the Clock interface instead of time.Now(); 5. Inject dependencies into business logic through the interface to achieve isolation testing. Proper use of interfaces is the key to achieving clean, testable code in Go, ultimately making testing more reliable and easy to maintain.

06 Jul 2025

PHPUnit does not support direct mock global functions, but can be implemented through namespace tricks or third-party libraries. 1. Use namespace to redefine the function of the same name in the test file to overwrite the original function; 2. Use tools such as BrainMonkey or FunctionMocker to simplify the mock process; 3. The best practice is to encapsulate global functions into the class and manage through dependency injection to improve code testability and maintainability.

02 Aug 2025

To effectively simulate dependencies in Go, you must first decouple the dependencies through the interface and define a DataStore interface instead of the specific type; then inject a simulation implementation in the test, you can manually create a MockDataStore structure to implement the interface and control the return value, or use gomock and other tools to automatically generate mocks. For example, generate MockDataStore through mockgen and set the expected calls in the test, you can also use testify/mock to write a manual mock with assertions; the key is to keep the interface small, only simulate external slow dependencies, give priority to dependency injection, and use real and simple implementation when possible.