Скачать или смотреть Solving the No Bean of Type PasswordEncoder Error in JUnit 5 Spring Security Tests

A comprehensive guide on how to resolve the `No qualifying bean of type 'PasswordEncoder'` error when testing Spring Security setups in JUnit 5.
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Understanding the No Bean of Type PasswordEncoder Error in JUnit 5 Tests

When working on a Spring application, it's common to encounter various testing issues. One frustrating problem developers face during testing Spring Security configurations is the No qualifying bean of type 'PasswordEncoder' error. This error typically occurs when a class that requires access to a PasswordEncoder bean cannot find it during test execution. If you're currently grappling with this issue, this guide will guide you through the solution step by step.

The Background: Your Setup

In your scenario, you have the following components:

Controller: Your EntryOverviewController serves a Thymeleaf template when accessing a certain URL.

Security Configuration: You've configured Spring Security using two classes: WebAppSecurityConfigurerAdapter for web security and ActuatorWebSecurityConfigurationAdapter for actuator security, where a PasswordEncoder bean is defined.

Here’s your code snippet causing the issue:

[[See Video to Reveal this Text or Code Snippet]]

When you attempt to run a JUnit 5 test for your controller, you encounter this error:

[[See Video to Reveal this Text or Code Snippet]]

The Solution: Importing Your Security Configuration

To resolve this testing issue, the solution is remarkably straightforward. All you need to do is import your WebSecurityConfig class into your JUnit test. By doing this, you ensure that the test context has access to the PasswordEncoder bean when needed.

Revised Test Code

You can modify your test class as follows:

[[See Video to Reveal this Text or Code Snippet]]

Key Changes Made:

Added @ Import(WebSecurityConfig.class): This annotation brings the security configuration into the test context, making its beans available for injection.

Why This Works

When JUnit runs your test, it creates an application context that, by default, does not include your security configurations. By importing WebSecurityConfig, your PasswordEncoder bean will be included, eliminating the error.

Conclusion

In conclusion, encountering the No qualifying bean of type 'PasswordEncoder' error in JUnit 5 tests related to Spring Security doesn't have to be a headache. With the simple step of importing your security configuration class, you can ensure your tests have all the necessary beans and configurations to run smoothly. Always ensure that all required components are included in the test context for a hassle-free testing experience!

Feel free to implement this solution in your own projects and watch your tests pass without error!