I followed your instructions and here is the result:

perl Makefile.PL 
cp META.json MYMETA.json
cp META.yml MYMETA.yml
Checking if your kit is complete...
Looks good
Generating a Unix-style Makefile
Writing Makefile for Test::TCP
/home/user/.cpanm/work/1404793946.7456/Test-TCP-2.06[102]> make test
cp lib/Test/TCP/CheckPort.pm blib/lib/Test/TCP/CheckPort.pm
cp lib/Net/EmptyPort.pm blib/lib/Net/EmptyPort.pm
cp lib/Test/TCP.pm blib/lib/Test/TCP.pm
PERL_DL_NONLAZY=1 /usr/bin/perl.exe "-MExtUtils::Command::MM" "-MTest:
+:Harness" "-e" "undef *Test::Harness::Switches; test_harness(0, 'blib
+/lib', 'blib/arch')" t/*.t
t/00_compile.t ................. 1/1 # Test::More: 0.98
t/00_compile.t ................. ok   
t/01_simple.t .................. empty port not found at /home/user/.c
+panm/work/1404793946.7456/Test-TCP-2.06/blib/lib/Net/EmptyPort.pm lin
+e 37.
# Looks like your test exited with 255 before it could output anything
+.
t/01_simple.t .................. Dubious, test returned 255 (wstat 652
+80, 0xff00)
Failed 22/22 subtests 
t/02_abrt.t .................... empty port not found at /home/user/.c
+panm/work/1404793946.7456/Test-TCP-2.06/blib/lib/Net/EmptyPort.pm lin
+e 37.
# Looks like your test exited with 255 before it could output anything
+.
t/02_abrt.t .................... Dubious, test returned 255 (wstat 652
+80, 0xff00)
Failed 2/2 subtests 
t/03_return_when_sigterm.t ..... empty port not found at /home/user/.c
+panm/work/1404793946.7456/Test-TCP-2.06/blib/lib/Net/EmptyPort.pm lin
+e 37.
# Looks like your test exited with 255 before it could output anything
+.
t/03_return_when_sigterm.t ..... Dubious, test returned 255 (wstat 652
+80, 0xff00)
Failed 2/2 subtests 
t/04_die.t ..................... 1/3 
#   Failed test at t/04_die.t line 25.
#                   'empty port not found at /home/user/.cpanm/work/14
+04793946.7456/Test-TCP-2.06/blib/lib/Net/EmptyPort.pm line 37.
# '
#     doesn't match '(?^:sinamon)'
Can't kill a non-numeric process ID at t/04_die.t line 26.
# Looks like you planned 3 tests but ran 2.
# Looks like you failed 1 test of 2 run.
# Looks like your test exited with 255 just after 2.
t/04_die.t ..................... Dubious, test returned 255 (wstat 652
+80, 0xff00)
Failed 2/3 subtests 
t/05_sigint.t .................. 1/2 # $Config{sig_name}: ZERO HUP INT
+ QUIT ILL TRAP ABRT EMT FPE KILL BUS SEGV SYS PIPE ALRM TERM URG STOP
+ TSTP CONT CHLD TTIN TTOU IO XCPU XFSZ VTALRM PROF WINCH LOST USR1 US
+R2 RTMAX CLD POLL PWR RTMIN 
# CHILD_ERROR_NATIVE: 2
# $?: 2
t/05_sigint.t .................. ok   
t/06_nest.t .................... empty port not found at /home/user/.c
+panm/work/1404793946.7456/Test-TCP-2.06/blib/lib/Net/EmptyPort.pm lin
+e 37.
# Looks like your test exited with 255 before it could output anything
+.
t/06_nest.t .................... Dubious, test returned 255 (wstat 652
+80, 0xff00)
Failed 1/1 subtests 
t/07_optional.t ................ ok   
t/08_exit.t ....................
[download]

I'm seeing a lot of "empty port not found" messages. Do you know what the problem could be?