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[ Source: libtest-deep-perl  ]

Package: libtest-deep-perl (1.128-1)

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Perl module for extremely flexible deep comparisons

Test::Deep gives you very flexible ways to check that the result you got is the result you were expecting. At it's simplest it compares two structures by going through each level, ensuring that the values match, that arrays and hashes have the same elements and that references are blessed into the correct class. It also handles circular data structures without getting caught in an infinite loop.

Where it becomes more interesting is in allowing you to do something besides simple exact comparisons. With strings, the eq operator checks that 2 strings are exactly equal but sometimes that's not what you want. When you don't know exactly what the string should be but you do know some things about how it should look, eq is no good and you must use pattern matching instead. Test::Deep provides pattern matching for complex data structures

Tags: Software Development: Perl Development, Libraries, Implemented in: implemented-in::perl, interface::commandline, Role: Program, Purpose: Checking, Comparing

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