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I used something simular to described above in HTTP::WebTest's tests. I had to test whenether text output matches given samples. And it too was PITA to update tests each time I change something. The solution was writting these text samples in files and adding special test mode when the text samples are updated from test results. Take a look on my module tests and particulary on HTTP::WebTest::SelfTest (all on CPAN). Here is the relevent bit from HTTP::WebTest::SelfTest. The subroutine compare_output acts more or less like Test::More's is with a difference that it only works for text and the expected result is stored in file.
sub compare_output { my %param = @_; my $check_file = $param{check_file}; my $output2 = ${$param{output_ref}}; my $output1 = read_file($check_file, 1); _print_diff($output1, $output2); _ok(($output1 eq $output2) or defined $ENV{TEST_FIX}); if(defined $ENV{TEST_FIX} and $output1 ne $output2) { # special mode for writting test report output files write_file($check_file, $output2); } } # ok compatible with Test and Test::Builder sub _ok { # if Test is already loaded use its ok if(Test->can('ok')) { @_ = $_[0]; goto \&Test::ok; } else { require Test::Builder; local $Test::Builder::Level = $Test::Builder::Level + 1; Test::Builder->new->ok(@_); } }
So my workflow was: change something, run tests, see that it fails as I expect (by inspecting diffs), run tests again in self-update mode.

Ilya Martynov,
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In reply to Re^3: When Test Suites Attack (text; diff) by IlyaM
in thread When Test Suites Attack by Ovid

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