When writing tests, failing fast isn’t always the best. Sometimes, you want to collect all assertion failures in one go. That’s where AssertJ SoftAssertions come in 💡
🔸 WHAT IS ASSERTJ? 🤔
- AssertJ is a fluent assertion library for Java, making your tests:
- More readable (natural language style)
- More expressive (rich API, better error messages)
- More maintainable (chainable, fluent methods)
🔸 CODE EXAMPLE 💻
class UserTest {
@Test
void testUserProperties() {
User user = new User("Alice", 25, "Paris");
SoftAssertions softly = new SoftAssertions();
softly.assertThat(user.getName()).isEqualTo("Bob");
softly.assertThat(user.getAge()).isGreaterThan(30);
softly.assertThat(user.getCity()).isEqualTo("London");
softly.assertAll(); // Collects and reports all failures 🚨
}
}
Instead of failing on the first mismatch, AssertJ reports all assertion errors together 📝
🔸 ADVANTAGES 🚀
- Detect multiple issues in one test run
- Provide comprehensive feedback to developers
- Reduce test re-runs 🔁
- Keep test code concise & elegant
🔸 TAKEAWAYS 📌
- Use AssertJ to write fluent, readable, and powerful assertions
- Use SoftAssertions when you want to gather multiple failures at once
- Cleaner tests = faster debugging = happier developers 😎
#Java #Testing #AssertJ #UnitTesting #CleanCode #TDD