use Perl

Boy oh boy, does nested TAP make Test::Aggregate much cleaner. It's not uploaded yet -- still documenting and working out corner cases for the new Test::Aggregate::Nexted -- but here's what aggregated test output used to look like. Remember, this is five separate test programs. Can you tell where each starts and ends?

Test-Aggregate  $ prove -lv t/pre_post.t
t/pre_post.t .. # ******** running tests for aggtests/check_plan.t ********

ok 1 - aggtests/check_plan.t ***** 1
ok 2 - aggtests/check_plan.t ***** 2
ok 3 # skip checking plan (aggtests/check_plan.t ***** 3)
ok 4 - env variables should not hang around
ok 5 - aggtests/check_plan.t ***** 4
ok 6 - findbin is reinitialized for every test
ok 7 # skip Testing skip all
#     ok - aggtests/check_plan.t (1 out of 5)
# ******** running tests for aggtests/findbin.t ********
#     ok - aggtests/findbin.t (2 out of 5)
# ******** running tests for aggtests/skip_all.t ********
#     ok - aggtests/skip_all.t (3 out of 5)
# ******** running tests for aggtests/slow_load.t ********
ok 8 - slow loading module loaded
ok 9 - env variables should not hang around
ok 10 - subs work!
ok 11 - Startup should be called once
ok 12 - ... as should shutdown
ok 13 - Setup should be called once for each test program
ok 14 - ... as should teardown
1..14
#     ok - aggtests/slow_load.t (4 out of 5)
# ******** running tests for aggtests/subs.t ********
#     ok - aggtests/subs.t (5 out of 5)
ok
All tests successful.
Files=1, Tests=14,  1 wallclock secs ( 0.02 usr  0.01 sys +  0.11 cusr  0.01 csys =  0.15 CPU)
Result: PASS

Now let's run that with Test::Aggregate::Nested (requires the development version of Test::More):

Test-Aggregate  $ prove -lv t/pre_post_nested.t
t/pre_post_nested.t ..
1..5
    1..5
        1..0 # SKIP Testing skip all
    ok 1 # skip Testing skip all
        1..1
        ok 1 - findbin is reinitialized for every test
    ok 2 - aggtests/findbin.t
        1..1
        ok 1 - subs work!
    ok 3 - aggtests/subs.t
        1..2
        ok 1 - slow loading module loaded
        ok 2 - env variables should not hang around
    ok 4 - aggtests/slow_load.t
        1..5
        ok 1 - aggtests/check_plan.t ***** 1
        ok 2 - aggtests/check_plan.t ***** 2
        ok 3 # skip checking plan (aggtests/check_plan.t ***** 3)
        ok 4 - env variables should not hang around
        ok 5 - aggtests/check_plan.t ***** 4
    ok 5 - aggtests/check_plan.t
ok 1 - nested tests
ok 2 - Startup should be called once
ok 3 - ... as should shutdown
ok 4 - Setup should be called once for each test program
ok 5 - ... as should teardown
ok
All tests successful.
Files=1, Tests=5,  2 wallclock secs ( 0.03 usr  0.01 sys +  0.11 cusr  0.02 csys =  0.17 CPU)
Result: PASS

Much, much nicer. As an added bonus, plans can now be cleanly asserted. I hope to have it on github soon, and later on the CPAN.