skills.rest
MassimilianoPili
MassimilianoPiliCOMMUNITY
Explore all skills by this author →
GitHub

unit-test-config-properties

Test Spring Boot @ConfigurationProperties binding and validation with JUnit 5 and ApplicationContextRunner.

Updated Mar 2, 2026
Search Tags:#testing#validation#spring boot#junit 5#configuration properties#application context runner
One-click install
npx skills add https://github.com/MassimilianoPili/claude-code-config --skill unit-test-config-properties-massimilianopili
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: unit-test-config-properties
Source: https://github.com/MassimilianoPili/claude-code-config/tree/main/skills/unit-test-config-properties
Command: npx skills add https://github.com/MassimilianoPili/claude-code-config --skill unit-test-config-properties-massimilianopili

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This skill streamlines the process of testing Spring Boot's @ConfigurationProperties classes, ensuring that application configuration is correctly bound, validated, and loaded, especially across different environments and profiles.

Core Features & Use Cases

  • Property Binding: Verify that properties are correctly mapped to your configuration classes.
  • Validation: Ensure that configuration values meet defined constraints (@NotBlank, @Min, @Max, etc.).
  • Profile-Specific Testing: Test how configurations behave under different Spring profiles (prod, dev).
  • Type Conversion: Validate that values like Duration and DataSize are converted correctly.
  • Use Case: You've updated your application's database connection properties and want to ensure they bind correctly and that validation rules for connection timeouts are enforced before deploying to production.

Quick Start

Use the unit-test-config-properties skill to test the binding of app.security.jwtSecret to a SecurityProperties class.

Frequently Asked Questions about unit-test-config-properties

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I test Spring Boot @ConfigurationProperties binding and validation?▼

Test Spring Boot @ConfigurationProperties binding and validation using JUnit 5 and ApplicationContextRunner to verify simple properties, nested structures, and validation constraints without starting a full Spring context.

Can I test profile-specific configuration properties in Spring Boot without a full context startup?▼

Yes, you can test profile-specific configurations by using ApplicationContextRunner to simulate environments like prod or dev, verifying that your configuration properties bind correctly under different Spring profiles without full context startup.

Does Spring Boot configuration testing support type conversion for Duration and DataSize?▼

Spring Boot configuration testing supports type conversion for Duration and DataSize, allowing you to validate that property values are correctly parsed and bound to your @ConfigurationProperties classes using JUnit 5.

What is the best way to validate @NotBlank and @Min constraints in Spring configuration properties?▼

The best way to validate constraints like @NotBlank and @Min in Spring configuration properties is using ApplicationContextRunner with JUnit 5 to assert that validation rules are enforced during property binding.

Why use ApplicationContextRunner instead of a full Spring context for testing configuration properties?▼

ApplicationContextRunner provides a lightweight testing mechanism for configuration properties, satisfying requirements for robust configuration testing without the overhead and startup time of a full Spring application context.

How do I test nested configuration property structures in Spring Boot?▼

You can test nested configuration property structures by using ApplicationContextRunner to verify that complex, nested properties are correctly mapped to your Spring Boot @ConfigurationProperties classes.

Related Skills

Explore More Software Engineering Skills→
rizaldiemrizaldiem

unit-test-config-properties

Validate Spring @ConfigurationProperties binding and validation with ApplicationContextRunner.

Community
Intermediate
nubivnubiv

springboot-tdd

Generate JUnit 5 tests for Spring Boot controllers with Mockito and MockMvc.

Community
Advanced
giuseppe-trisciuogliogiuseppe-trisciuoglio
322

unit-test-config-properties

Test Spring Boot @ConfigurationProperties bindings with ApplicationContextRunner.

Community
Basic
AZANIRAZANIR
2

qa-spring-test-writer

Generate Spring Boot integration tests with MockMvc, TestContainers, and WebTestClient.

Community
Intermediate