$ prove -v sscce_require_hook_test.t
sscce_require_hook_test.t ..
1..6
ok 1 - Test RequireHookTest::->new()
ok 2 - 'Test RequireHookTest::->new() ISA' isa 'RequireHookTest'
ok 3 - Test RequireHookTest::Test1->new()
ok 4 - 'Test RequireHookTest::Test1->new() ISA' isa 'RequireHookTest::Test1'
Can't locate object method "new" via package "RequireHookTest::Test2" at sscce_require_hook_test.t line 23.
# Looks like your test exited with 255 just after 4.
Dubious, test returned 255 (wstat 65280, 0xff00)
Failed 2/6 subtests

Test Summary Report
-------------------
sscce_require_hook_test.t (Wstat: 65280 Tests: 4 Failed: 0)
  Non-zero exit status: 255
  Parse errors: Bad plan.  You planned 6 tests but ran 4.
Files=1, Tests=4,  0 wallclock secs ( 0.00 usr  0.03 sys +  0.20 cusr  0.09 csys =  0.33 CPU)
Result: FAIL