How to test constructor of a class that has a @PostConstruct method using Spring?

Question

If I have a class with a @PostConstruct method, how can I test its constructor and thus its @PostConstruct method using JUnit and Spring? I can\'t simply use new ClassName(param

Answer 1

If the only container managed part of Connection is your @PostContruct method, just call it manually in a test method:

@Test
public void test() {
  Connection c = new Connection("dog", "ruff");
  c.init();
  assertEquals("arf arf arf", c.getX1());
}

If there is more than that, like dependencies and so on you can still either inject them manually or - as Sridhar stated - use spring test framework.