Linux Certif

Toute la documentation sur la certification Linux LPI

Test::Unit::Assertion::Regexp.3pm

NAME

Test::Unit::Assertion::Regexp - Assertion with regex matching

SYNOPSIS

     require Test::Unit::Assertion::Regexp;
 
     my $assert_re =
       Test::Unit::Assertion::Regexp->new(qr/a_pattern/);
 
     $assert_re->do_assertion('a_string');
 
 

This is rather more detail than the average user will need. Test::Unit::Assertion::Regexp objects are generated automagically by Test::Unit::Assert::assert when it is passed a regular expression as its first parameter.

     sub test_foo {
       ...
       $self->assert(qr/some_pattern/, $result);
     }
 
 

If the assertion fails then the object throws an exception with details of the pattern and the string it failed to match against.

Note that if you need to do a 'string does not match this pattern' type of assertion then you can do:

    $self->assert(qr/(?!some_pattern)/, $some_string)
 
 

ie. Make use of the negative lookahead assertion.

IMPLEMENTS

Test::Unit::Assertion::Regexp implements the Test::Unit::Assertion interface, which means it can be plugged into the Test::Unit::TestCase and friends' "assert" method with no ill effects.

DESCRIPTION

The class is used by the framework to provide sensible 'automatic' reports when a match fails. The old:

     $self->assert(scalar($foo =~ /pattern/), "$foo didn't match /.../");
 
 

seems rather clumsy compared to this. If the regexp assertion fails, then the user is given a sensible error message, with the pattern and the string that failed to match it...

AUTHOR

Copyright (c) 2001 Piers Cawley <pdcawley@iterative-software.com>.

All rights reserved. This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

SEE ALSO

*

Test::Unit::TestCase

*

Test::Unit::Assertion