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Test::Unit::Assert(3pm) User Contributed Perl Documentation Test::Unit::Assert(3pm)
NAME
Test::Unit::Assert - unit testing framework assertion class
SYNOPSIS
# this class is not intended to be used directly,
# normally you get the functionality by subclassing from
# Test::Unit::TestCase
use Test::Unit::TestCase;
# more code here ...
$self->assert($your_condition_here, $your_optional_message_here);
# or, for regular expression comparisons:
$self->assert(qr/some_pattern/, $result);
# or, for functional style coderef tests:
$self->assert(sub {
$_[0] == $_[1]
or $self->fail("Expected $_[0], got $_[1]");
}, 1, 2);
# or, for old style regular expression comparisons
# (strongly deprecated; see warning below)
$self->assert(scalar("foo" =~ /bar/), $your_optional_message_here);
# Or, if you don't mind us guessing
$self->assert_equals('expected', $actual [, $optional_message]);
$self->assert_equals(1,$actual);
$self->assert_not_equals('not expected', $actual [, $optional_message]);
$self->assert_not_equals(0,1);
# Or, if you want to force the comparator
$self->assert_num_equals(1,1);
$self->assert_num_not_equals(1,0);
$self->assert_str_equals('string','string');
$self->assert_str_not_equals('stringA', 'stringB');
# assert defined/undefined status
$self->assert_null(undef);
$self->assert_not_null('');
DESCRIPTION
This class contains the various standard assertions used within the framework. With the
exception of the "assert(CODEREF, @ARGS)", all the assertion methods take an optional
message after the mandatory fields. The message can either be a single string, or a list,
which will get concatenated.
Although you can specify a message, it is hoped that the default error messages generated
when an assertion fails will be good enough for most cases.
Methods
assert_equals(EXPECTED, ACTUAL [, MESSAGE])
assert_not_equals(NOTEXPECTED, ACTUAL [, MESSAGE])
The catch all assertions of (in)equality. We make a guess about whether to test for
numeric or string (in)equality based on the first argument. If it looks like a number
then we do a numeric test, if it looks like a string, we do a string test.
If the first argument is an object, we check to see if the '==' operator has been
overloaded and use that if it has, otherwise we do the string test.
assert_num_equals
assert_num_not_equals
Force numeric comparison with these two.
assert_str_equals
assert_str_not_equals
Force string comparison
assert_matches(qr/PATTERN/, STRING [, MESSAGE])
assert_does_not_match(qr/PATTERN/, STRING [, MESSAGE])
Assert that STRING does or does not match the PATTERN regex.
assert_deep_equals(A, B [, MESSAGE ])
Assert that reference A is a deep copy of reference B. The references can be complex,
deep structures. If they are different, the default message will display the place
where they start differing.
NOTE This is NOT well-tested on circular references. Nor am I quite sure what will
happen with filehandles.
assert_null(ARG [, MESSAGE])
assert_not_null(ARG [, MESSAGE])
Assert that ARG is defined or not defined.
assert(BOOLEAN [, MESSAGE])
Checks if the BOOLEAN expression returns a true value that is neither a CODE ref nor a
REGEXP. Note that MESSAGE is almost non optional in this case, otherwise all the
assertion has to go on is the truth or otherwise of the boolean.
If you want to use the "old" style for testing regular expression matching, please be
aware of this: the arguments to assert() are evaluated in list context, e.g. making a
failing regex "pull" the message into the place of the first argument. Since this is
usually just plain wrong, please use scalar() to force the regex comparison to yield a
useful boolean value.
assert(qr/PATTERN/, ACTUAL [, MESSAGE])
Matches ACTUAL against the PATTERN regex. If you omit MESSAGE, you should get a
sensible error message.
assert(CODEREF, @ARGS)
Calls CODEREF->(@ARGS). Assertion fails if this returns false (or throws
Test::Unit::Failure)
assert_raises(EXCEPTION_CLASS, CODEREF [, MESSAGE])
Calls CODEREF->(). Assertion fails unless an exception of class EXCEPTION_CLASS is
raised.
multi_assert(ASSERTION, @ARGSETS)
Calls $self->assert(ASSERTION, @$ARGSET) for each $ARGSET in @ARGSETS.
ok(@ARGS)
Simulates the behaviour of the Test module. Deprecated.
AUTHOR
Copyright (c) 2000-2002, 2005 the PerlUnit Development Team (see Test::Unit or the AUTHORS
file included in this distribution).
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
o Test::Unit::Assertion
o Test::Unit::Assertion::Regexp
o Test::Unit::Assertion::CodeRef
o Test::Unit::Assertion::Boolean
o Test::Unit::TestCase
o Test::Unit::Exception
o The framework self-testing suite (t::tlib::AllTests)
perl v5.30.2 2020-05-18 Test::Unit::Assert(3pm)
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On Apache
Under GNU General Public License
2025-11-29 18:31 @216.73.216.105 CrawledBy Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)