That's not the input of a single test, you're seeing the input of several tests there. The tests are ok in Java:

Java Completions 6044

        assertEquals(3,Kata.findEvenIndex(new int[] {1,2,3,4,3,2,1}));
        assertEquals(1,Kata.findEvenIndex(new int[] {1,100,50,-51,1,1}));
        assertEquals(-1,Kata.findEvenIndex(new int[] {1,2,3,4,5,6}));
        ...

See?