Edit Question - KnowledgeHub

Title Body

I wrote a mockup example to illustrate this without exposing anything confidential. It's a "dummy" example which does nothing, but the problem occurs in the test initialiser. @RunWith(Parameterized.class) public class ExampleParamTest { int ordinal; List<String> strings; public ExampleParamTest(int ordinal, String... strings) { this.ordinal = ordinal; if (strings.length == 0) { this.strings = null; } else { this.strings = Arrays.asList(strings); } } @Parameters public static Collection<Object[]> data() { return Arrays.asList(new Object[][] { {0, "hello", "goodbye"}, {1, "farewell"} }); } @Test public void doTest() { Assert.assertTrue(true); } } Basically I have a test constructor which accepts multiple arguments for a local list variable and I want to populate this through an array initialiser. The test method will handle the local list variable correctly - I have removed this logic to simplify the test. When I write this, my IDE has no complaints about syntax and the test class builds without any compile errors. However when I run it, I get: doTest[0]: java.lang.IllegalArgumentException: wrong number of arguments at java.lang.reflect.Constructor.newInstance(Unknown Source) doTest[1]: java.lang.IllegalArgumentException: argument type mismatch at java.lang.reflect.Constructor.newInstance(Unknown Source) What exactly has gone wrong here, and how do I correctly use this pattern?

Tags (comma-separated) Cancel