/ 
Test-Proto-0.021
River stage one • 1 direct dependent • 1 total dependent
/ Test::Proto::Role::Value

NAME

Test::Proto::Role::Value - Role containing test case methods for any perl value

SYNOPSIS

package MyProtoClass;
use Moo;
with 'Test::Proto::Role::Value';

This Moo Role provides methods to Test::Proto::Base for common test case methods like eq, defined, etc. which can potentially be used on any perl value/object.

METHODS

eq, ne, gt, lt, ge, le

p->eq('green')->ok('green'); # passes
p->lt('green')->ok('grape'); # passes

Performs the relevant string comparison on the subject, comparing against the text supplied.

num_eq, num_ne, num_gt, num_lt, num_ge, num_le

p->num_eq(0)->ok(0); # passes
p->num_lt(256)->ok(255); # passes

Performs the relevant string comparison on the subject, comparing against the number supplied.

true, false

p->true->ok("Strings are true"); # passes
p->false->ok($undefined); # fails

Tests if the subject returns true or false in boolean context.

defined, undefined

Tests if the subject is defined/undefined.

p->defined->ok("Pretty much anything"); # passes

Note that directly supplying undef into the protoype (as opposed to a variable containing undef, a function which returns undef, etc.) will exhibit different behaviour: it will attempt to use $_ instead. This is experimental behaviour.

$_ = 3;
$undef = undef;
p->undefined->ok(undef); # fails
p->undefined->ok($undef); # passes

like, unlike

p->like(qr/^a$/)->ok('a');
p->unlike(qr/^a$/)->ok('b');

The test subject is validated against the regular expression. Like tests for a match; unlike tests for nonmatching.

try

p->try( sub { 'a' eq lc shift; } )->ok('A');

Used to execute arbitrary code. Passes if the return value is true.

ref

p->ref(undef)->ok('b');
p->ref('less')->ok(less);
p->ref(qr/[a-z]+/)->ok(less);

Tests the result of the 'ref'. Any prototype will do here.

is_a

p->is_a('')->ok('b');
p->is_a('ARRAY')->ok([]);
p->is_a('less')->ok(less);

A test which bundles isa and ref together.

If the subject is not a reference, undef or '' in the first argument passes.

If the subject is a reference to a builtin type like HASH, the ref of that type passes.

If the subject is a blessed reference, then isa is used.

also

$positive = p->num_gt(0);
$integer->also($positive);
$integer->also(qr/[02468]$/);
$integer->ok(42); # passes

Tests that the subject also matches the protoype given. If the argument given is not a prototype, the argument is upgraded to become one.

any_of

$positive = p->num_gt(0);
$all = p->eq('all');
$integer->any_of([$positive, $all]);
$integer->ok(42); # passes
$integer->ok('all'); # passes

Tests that the subject also matches one of the protoypes given in the arrayref. If a member of the arrayref given is not a prototype, the argument is upgraded to become one.

all_of

$positive = p->num_gt(0);
$under_a_hundred = p->num_lt(100);
$integer->all_of([$positive, $under_a_hundred]);
$integer->ok(42); # passes
$integer->ok('101'); # fails

Tests that the subject also matches one of the protoypes given in the arrayref. If a member of the arrayref given is not a prototype, the argument is upgraded to become one.

none_of

$positive = p->num_gt(0);
$all = p->like(qr/[02468]$/);
$integer->none_of([$positive, $all]);
$integer->ok(-1); # passes
$integer->ok(-2); # fails
$integer->ok(1); # fails

Tests that the subject does not match any of the protoypes given in the arrayref. If a member of the arrayref given is not a prototype, the argument is upgraded to become one.

some_of

p->some_of([qr/cheap/, qr/fast/, qr/good/], 2, 'Pick two!');

Tests that the subject some, all, or none of the protoypes given in the arrayref; the number of successful matches is tested against the second argument. If a member of the arrayref given is not a prototype, the argument is upgraded to become one.

looks_like_number

p->looks_like_number->ok('3'); # passes
p->looks_like_number->ok('a'); # fails

If the test subject looks like a number according to Perl's internal rules (specifically, using Scalar::Util::looks_like_number), then pass.

looks_unlike_number

p->looks_unlike_number->ok('3'); # fails
p->looks_unlike_number->ok('a'); # passes

If the test subject looks like a number according to Perl's internal rules (specifically, using Scalar::Util::looks_like_number), then fail.

is_weak_ref

DOES NOT WORK

Tests that the subject is a weak reference using is_weak from Scalar::Util.

is_strong_ref

DOES NOT WORK

Tests that the subject is not a weak reference using is_weak from Scalar::Util.

Data::DPath

The following functions will load if you have Data::DPath installed.

dpath_true

p->dpath_true('//answer[ val == 42 ]')

Evaluates the dpath expression and passes if it finds a match.

dpath_false

p->dpath_false('//answer[ !val ]')

Evaluates the dpath expression and passes if it does not find a match.

dpath_results

p->dpath_false('//answer', pArray->array_any(42))

Evaluates the dpath expression and then uses the second argument (which should be upgradeable to a Test::Proto::ArrayRef) to validate the list of matches.

OTHER INFORMATION

For author, version, bug reports, support, etc, please see Test::Proto.