JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 061
Unit testing with JUnit 5 and Mockito: a practical guide
Expona Admin · Oct 27, 2026 · 5 min read
Tag · 460 articles · 1 interview series
#Testing
Practical Testing articles, guides and code examples from the Expona engineering blog.
Articles
460 articles
JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 063
Controller tests with @WebMvcTest in Java & Spring Boot
Expona Admin · Oct 27, 2026 · 6 min read
JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 064
Repository tests with @DataJpaTest and Testcontainers
Expona Admin · Oct 27, 2026 · 7 min read
JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 065
Integration tests with @SpringBootTest, explained simply
Expona Admin · Oct 27, 2026 · 7 min read
JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 066
Test data builders in Java: patterns, pitfalls and fixes
Expona Admin · Oct 27, 2026 · 7 min read
JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 067
Contract testing Spring Boot APIs in Java & Spring Boot
Expona Admin · Oct 27, 2026 · 7 min read
JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 068
Code coverage with JaCoCo: practical tips and trade-offs
Expona Admin · Oct 27, 2026 · 6 min read
JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 069
Mutation testing with PIT: practical tips and trade-offs
Expona Admin · Oct 27, 2026 · 8 min read
JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 070
Testing Spring Security rules: best practices explained
Expona Admin · Oct 27, 2026 · 8 min read
JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 086
GitHub Actions CI for Maven projects: a practical guide
Expona Admin · Oct 27, 2026 · 8 min read
JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 088
Speeding up Spring Boot startup: lessons from production
Expona Admin · Oct 27, 2026 · 6 min read
JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 097
Modular monoliths with Spring Modulith, explained simply
Expona Admin · Oct 27, 2026 · 6 min read
JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 099
Java backend developer roadmap: best practices explained
Expona Admin · Oct 27, 2026 · 5 min read
JAVA, SPRING FRAMEWORK & SPRING BOOT · DAY 100
100 days of Java and Spring Boot: the recap in practice
Expona Admin · Oct 27, 2026 · 8 min read
PYTHON BACKEND DEVELOPMENT · DAY 002
Setting up a Python project the modern way: a deep dive
Expona Admin · Oct 27, 2026 · 6 min read
PYTHON BACKEND DEVELOPMENT · DAY 004
Python data structures you should know in Python Backend
Expona Admin · Oct 27, 2026 · 8 min read
PYTHON BACKEND DEVELOPMENT · DAY 017
Dependency injection in FastAPI: lessons from production
Expona Admin · Oct 27, 2026 · 6 min read
PYTHON BACKEND DEVELOPMENT · DAY 024
Testing FastAPI with pytest: what developers should know
Expona Admin · Oct 27, 2026 · 8 min read
PYTHON BACKEND DEVELOPMENT · DAY 030
Fixing N+1 queries in Django: what developers should know
Expona Admin · Oct 27, 2026 · 7 min read
PYTHON BACKEND DEVELOPMENT · DAY 037
Django signals: use with care — best practices explained
Expona Admin · Oct 27, 2026 · 7 min read