use Perl

• Test::Differences vs Test::Deep (Score:1)

  by colink (481)

  I'm curious. Why do you prefer Test::Differences vs Test::Deep? Is it better diagnostics for failing tests, speed, personal preference, or something else altogether?
  • Re:Test::Differences vs Test::Deep (Score:2)

    by Ovid (2709) on 2008.01.12 4:52 (#60188) Homepage Journal

    I just added Test::Deep. Consider the code:

    use Our::Test::More 'no_plan';
    my ( $foo, $bar ) = ( [qw/1 2 3 4 5/], [qw/1 2 trois 4 cinq/] );
    eq_or_diff $foo, $bar;
    cmp_deeply $foo, $bar;

    Consider the output:

    #   Failed test at test.t line 10.
    # +----+-----+----------+
    # | Elt|Got  |Expected  |
    # +----+-----+----------+
    # |   0|1    |1         |
    # |   1|2    |2         |
    # *   2|3    |trois     *
    # |   3|4    |4         |
    # *   4|5    |cinq      *
    # +----+-----+----------+
    not ok 2
    
    #   Failed test at test.t line 11.
    # Compared $data->[2]
    #    got : '3'
    # expect : 'trois'

    With Test::Differences, I can see and potentially fix all of the problems at once. I've used Test::Deep for the bag tests, but that's about it.

    Also, last night I decided to figure out which Test modules were the most popular. Out of almost 300 I found used in CPAN modules, here are the top ten:

      Test::More              44473
      Test::Exception          1380
      Test::Simple              731
      Test::Base                316
      Test::Builder::Tester     193
      Test::NoWarnings          174
      Test::Differences         150
      Test::MockObject          139
      Test::Deep                127
      Test::Warn                118

    Test::Deep certainly warrants more attention here.

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