Dear Monks,
I'm trying to install Tk from CPAN. Sometimes, everything goes just OK, but sometimes, a test fails:
Test Summary Report
-------------------
t/text.t (Wstat: 0 Tests: 415 Failed: 0)
  TODO passed:   121
Files=1, Tests=415,  2 wallclock secs ( 0.20 usr  0.02 sys +  0.98 cus
+r  0.05 csys =  1.25 CPU)
Result: PASS
t/text.t .. 289/415 Stack moved 887d7ec => 887d7f0
t/text.t .. ok       
All tests successful.

[download]
versus
Test Summary Report
-------------------
t/text.t (Wstat: 0 Tests: 415 Failed: 0)
  TODO passed:   121
Files=1, Tests=415,  2 wallclock secs ( 0.22 usr  0.01 sys +  0.94 cus
+r  0.05 csys =  1.22 CPU)
Result: PASS
t/text.t .. 247/415 
#   Failed test at t/text.t line 1548.
#                   ''
#     doesn't match '(?-xism:PRIMARY\ selection\ doesn\'t\ exist\ or\ 
+form\ \"STRING\"\ not\ defined)'
Stack moved 887d934 => 887d938
t/text.t .. 403/415 # Looks like you failed 1 test of 415.
t/text.t .. Dubious, test returned 1 (wstat 256, 0x100)
Failed 1/415 subtests 
        (less 32 skipped subtests: 382 okay)
        (1 TODO test unexpectedly succeeded)

[download]
The sometimes failing test is this one:
{
    $t2->destroy if Tk::Exists($t2);
    $t2 = $mw->Text;
    $t2->insert('1.0', "abcdef\nghijk\n1234");
    $t2->tagAdd('sel', '1.0', '1.3');
    is($mw->SelectionGet, 'abc');
    $mw->SelectionClear;
# *
    eval { $mw->SelectionGet };
    like($@, qr{\QPRIMARY selection doesn't exist or form "STRING" not
+ defined});
    $t2->tagAdd('sel', '1.0', '1.3');
    is($mw->SelectionGet, 'abc');
}

[download]
If I add a sleep 1; before the eval line (marked with *), the test passes everytimes. The question is: is this a bug? Or just a poorly written test? Or...?
Running perl 5.12.1, openSUSE 11.3 with KDE 4.4.4.

In reply to Tk: Cannot install from CPAN sometimes. by choroba

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