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Unit tests with TestNG or JUnit and Spring support
Unit tests in Nuclos – JUnit and TestNG with a Spring context, ReflectionTestUtils, Mockito and @Autowired.
REFERENZ DEVELOPER UPDATED: JUL 2026 APPLIES TO NUCLOS 4.2026.X
On this page
Nuclos supports classic unit tests. A unit test checks a single method/class independently of the rest of the code – ideal for calculations. In the build and CI process all tests run automatically.
Frameworks
- JUnit – the best-known framework, supported by Nuclos.
- TestNG – also supported (its own Eclipse plugin,
testng.xmlsuites).
Spring support
Nuclos tests can use Spring to inject beans and load the context:
| Approach | Description |
|---|---|
SpringJUnit4ClassRunner | JUnit test with a Spring context. |
AbstractTestNGSpringContextTests | TestNG test with a Spring context. |
ReflectionTestUtils | sets private fields for tests. |
@Autowired / @Configurable | injection into test or domain objects. |
| Mockito / Springockito | mocking dependencies in combination with Spring. |
Examples
The most extensive examples are in the FDM project (Nuclos staff only). This page gives everyone else an overview of what is possible.
Related pages
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