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Re: A brief question about testing/best practices

by Your Mother (Archbishop)
on Jan 20, 2015 at 17:25 UTC ( #1113906=note: print w/replies, xml ) Need Help??

in reply to A brief question about testing/best practices

To amplify what choroba and davido said, unit tests would be those for your classes and methods (probably, depends on how isolated they are) and testing the “glue” as you say would be system testing. Here’s a naïve skeleton to do both that ought to help you get your head around it and some ways to organize it–

use strictures; # strict + fatal warnings use Test::More; use Capture::Tiny "capture"; ok 1, "1 is ok"; # Test simple truthiness. diag "Dialog always shows"; note "Notes show when running verbose tests"; # Isolate a batch of tests into a subtest. subtest "My unit tests" => sub { require_ok("DBI"); # Use your own package here. # Test methods/subs in as minimalistic/decoupled a way as possible +. done_testing(1); # + whatever you add. }; subtest "My system tests" => sub { my ( $out, $err, $exit ) = capture { system qw/ ls -l -A -f /; # Your program/glue here instead. }; is $exit, 0, "Executed normally"; ok ! $err, "Without errors"; like $out, qr/\n-rw/, "Found some read/write nodes... very clumsily"; done_testing(3); }; done_testing(3);
moo@cow[44]~/>prove pm-1113898 -v pm-1113898 .. ok 1 - 1 is ok # Notes show when running verbose tests # Subtest: My unit tests # Dialog always shows ok 1 - require DBI; 1..1 ok 2 - My unit tests # Subtest: My system tests ok 1 - Executed normally ok 2 - Without errors ok 3 - Found some read/write nodes... very clumsily 1..3 ok 3 - My system tests 1..3 ok All tests successful. Files=1, Tests=3, 0 wallclock secs ( 0.02 usr 0.01 sys + 0.04 cusr + 0.00 csys = 0.07 CPU) Result: PASS

Further suggested reading: Re: why Test::More? (my $horn; $horn->toot;), Capture::Tiny, Test::Most.

(Update: fixed spelling of minimalistic+decoupled in code comment.)

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Re^2: A brief question about testing/best practices
by Amblikai (Scribe) on Jan 20, 2015 at 20:33 UTC

    Thanks for the example, i'll work through this and i appreciate the link to your other response.

    Can i use Test::Most as a replacement for Test::More at this early stage?

      Yes, but I might stick with Test::More at first just to help you keep track of what’s what and when you actually needed/used something. You should, so I say, prefer Test::Fatal to Test::Exception (imported by Test::Most).

      Update: s/Test::More/Test::Most/ in last parenthetical.

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