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Test-Mini-v1.1.3
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/ Test::Mini::Assertions

NAME

Test::Mini::Assertions - Basic Assertions for Test::Mini

METHODS

Exported Functions

assert
assert($test, $msg)

Asserts that $test is truthy, and throws a Test::Mini::Exception::Assert if that assertion fails.

Examples:

assert 1;

assert 'true', 'Truth should shine clear';

Parameters:

  • $test -- The value to test.

  • (String) $msg -- An optional description.

assert_block
assert_block($block, $msg) 


Deprecated. This assertion offers little advantage over the base L<<<<
S<<<<< #assert >>>>>|Test::Mini::Assertions/assert >>>>. This will be
removed in v2.0.0.

Asserts that the given code reference returns a truthy value.

Examples:

assert_block { 'true' };

assert_block \&some_sub, 'expected better from &some_sub';

Parameters:

  • (CODE) $block -- The code reference to test.

  • (String) $msg -- An optional description.

assert_can
Aliased as: assert_responds_to
assert_can($obj, $method, $msg)

Verifies that the given $obj is capable of responding to the given $method name.

Examples:

assert_can $date, 'day_of_week';

assert_can $time, 'seconds', '$time cannot respond to #seconds';

Parameters:

  • $obj -- The object being tested.

  • (String) $method -- The method name being checked for.

  • (String) $msg -- An optional description.

assert_contains
Aliased as: assert_includes
assert_contains($collection, $obj, $msg)

Verifies that the given $collection contains the given $obj as a member.

Examples:

assert_contains [qw/ 1 2 3 /], 2;

assert_contains { a => 'b' }, 'a';  # 'b' also contained

assert_contains 'expectorate', 'xp';

assert_contains Collection->new(1, 2, 3), 2;  # if Collection->contains(2)

Parameters:

  • (Array|Hash|String|#contains) $collection -- The collection to test.

  • $obj -- The needle to find.

  • (String) $msg -- An optional description.

assert_defined
Aliased as: refute_undef
assert_defined($obj, $msg)

Validates that the given $obj is defined.

Examples:

assert_defined $value;  # if defined $value

Parameters:

  • $obj -- The value to check.

  • (String) $msg -- An optional description.

assert_dies
assert_dies($sub, $error, $msg)

Tests that the supplied code block dies, and fails if it succeeds. If $error is provided, the error message in $@ must contain it.

Examples:

assert_dies { die 'LAGHLAGHLAGHL' };

assert_dies { die 'Failure on line 27 in Foo.pm' } 'line 27';

Parameters:

  • (CODE) $sub -- The code that should die.

  • (String) $error -- The (optional) error substring expected.

  • (String) $msg -- An optional description.

assert_empty
assert_empty($collection, $msg)

Verifies the emptiness of a collection.

Examples:

assert_empty [];

assert_empty {};

assert_empty '';

assert_empty Collection->new();  # if Collection->new()->is_empty()

Parameters:

  • (Array|Hash|String|#is_empty) $collection -- The collection under scrutiny.

  • (String) $msg -- An optional description.

assert_equal
Aliased as: assert_eq
assert_equal($actual, $expected, $msg)

Checks two given arguments for equality.

Examples:

assert_equal 3.000, 3;

assert_equal lc('FOO'), 'foo';

assert_equal [qw/ 1 2 3 /], [ 1, 2, 3 ];

assert_equal { a => 'eh' }, { a => 'eh' };

assert_equal Class->new(), $expected;  # if $expected->equals(Class->new())

Parameters:

  • $actual -- The value under test.

  • $expected -- The expected value.

  • (String) $msg -- An optional description.

assert_in_delta
assert_in_delta($actual, $expected, $delta, $msg)

Checks that the difference between $actual and $expected is less than $delta.

Examples:

assert_in_delta 1.001, 1;

assert_in_delta 104, 100, 5;

Parameters:

  • (Number) $actual -- The tested value.

  • (Number) $expected -- The static value.

  • (Number) $delta -- The expected delta. Defaults to 0.001.

  • (String) $msg -- An optional description.

assert_in_epsilon
assert_in_epsilon($actual, $expected, $epsilon, $msg)

Checks that the difference between $actual and $expected is less than a given fraction of the smaller of the two numbers.

Examples:

assert_in_epsilon 22.0 / 7.0, Math::Trig::pi;

assert_in_epsilon 220, 200, 0.10

Parameters:

  • (Number) $actual -- The tested value.

  • (Number) $expected -- The static value.

  • (Number) $epsilon -- The expected tolerance factor. Defaults to 0.001.

  • (String) $msg -- An optional description.

assert_instance_of
assert_instance_of($obj, $type, $msg)

Validates that the given object is an instance of $type.

Examples:

assert_instance_of MyApp::Person->new(), 'MyApp::Person';

Parameters:

  • $obj -- The instance to check.

  • (Class) $type -- The type to expect.

  • (String) $msg -- An optional description.

See Also:

assert_is_a
Aliased as: assert_isa
assert_is_a($obj, $type, $msg)

Validates that $obj inherits from $type.

Examples:

assert_is_a 'Employee', 'Employee';

assert_is_a Employee->new(), 'Employee';

assert_is_a 'Employee', 'Person'; # assuming Employee->isa('Person')

assert_is_a Employee->new(), 'Person';

Parameters:

  • $obj -- The instance or class to check.

  • (Class) $type -- The expected superclass.

  • (String) $msg -- An optional description.

assert_match
assert_match($string, $pattern, $msg)

Validates that the given $string matches the given $pattern.

Examples:

assert_match 'Four score and seven years ago...', qr/score/;

Parameters:

  • (String) $string -- The string to match.

  • (Regex) $pattern -- The regular expression to match against.

  • (String) $msg -- An optional description.

assert_undef
Aliased as: refute_defined
assert_undef($obj, $msg)

Validates that the given $obj is undefined.

Examples:

assert_undef $value;  # if not defined $value

Parameters:

  • $obj -- The value to check.

  • (String) $msg -- An optional description.

flunk
flunk($msg)

Causes the current test to exit immediately with a failing status.

Parameters:

  • (String) $msg -- An optional description.

refute
refute($test, $msg)

Asserts that $test is falsey, and throws a Test::Mini::Exception::Assert if that assertion fails.

Examples:

refute 0;

refute undef, 'Deny the untruths';

Parameters:

  • $test -- The value to test.

  • (String) $msg -- An optional description.

refute_block
refute_block($block, $msg) 


Deprecated. This assertion offers little advantage over the base L<<<<
S<<<<< #refute >>>>>|Test::Mini::Assertions/refute >>>>. This will be
removed in v2.0.0.

Asserts that the given code reference returns a falsey value.

Examples:

refute_block { '' };

refute_block \&some_sub, 'expected worse from &some_sub';

Parameters:

  • (CODE) $block -- The code reference to test.

  • (String) $msg -- An optional description.

refute_can
Aliased as: refute_responds_to
refute_can($obj, $method, $msg)

Verifies that the given $obj is not capable of responding to the given $method name.

Examples:

refute_can $date, 'to_time';

refute_can $time, 'day', '$time cannot respond to #day';

Parameters:

  • $obj -- The object being tested.

  • (String) $method -- The method name being checked.

  • (String) $msg -- An optional description.

refute_contains
refute_contains($collection, $obj, $msg)

Verifies that the given $collection does not contain the given $obj as a member.

Examples:

refute_contains [qw/ 1 2 3 /], 5;

refute_contains { a => 'b' }, 'x';

refute_contains 'expectorate', 'spec';

refute_contains Collection->new(1, 2, 3), 5;  # unless Collection->contains(5)

Parameters:

  • (Array|Hash|String|#contains) $collection -- The collection to test.

  • $obj -- The needle to look for.

  • (String) $msg -- An optional description.

refute_empty
refute_empty($collection, $msg)

Verifies the non-emptiness of a collection.

Examples:

refute_empty [ 1 ];

refute_empty { a => 1 };

refute_empty 'full';

refute_empty Collection->new();  # unless Collection->new()->is_empty()

Parameters:

  • (Array|Hash|String|#is_empty) $collection -- The collection under scrutiny.

  • (String) $msg -- An optional description.

refute_equal
Aliased as: refute_eq
refute_equal($actual, $unexpected, $msg)

Checks two given arguments for inequality.

Examples:

refute_equal 3.001, 3;

refute_equal lc('FOOL'), 'foo';

refute_equal [qw/ 1 23 /], [ 1, 2, 3 ];

refute_equal { a => 'ae' }, { a => 'eh' };

refute_equal Class->new(), $expected;  # unless $expected->equals(Class->new())

Parameters:

  • $actual -- The value under test.

  • $expected -- The tested value.

  • (String) $msg -- An optional description.

refute_in_delta
refute_in_delta($actual, $expected, $delta, $msg)

Checks that the difference between $actual and $expected is greater than $delta.

Examples:

refute_in_delta 1.002, 1;

refute_in_delta 106, 100, 5;

Parameters:

  • (Number) $actual -- The tested value.

  • (Number) $expected -- The static value.

  • (Number) $delta -- The delta $actual and $expected are expected to differ by. Defaults to 0.001.

  • (String) $msg -- An optional description.

refute_in_epsilon
refute_in_epsilon($actual, $expected, $epsilon, $msg)

Checks that the difference between $actual and $expected is greater than a given fraction of the smaller of the two numbers.

Examples:

refute_in_epsilon 21.0 / 7.0, Math::Trig::pi;

refute_in_epsilon 220, 200, 0.20

Parameters:

  • (Number) $actual -- The tested value.

  • (Number) $expected -- The static value.

  • (Number) $epsilon -- The factor by which $actual and $expected are expected to differ by. Defaults to 0.001.

  • (String) $msg -- An optional description.

refute_match
refute_match($string, $pattern, $msg)

Validates that the given $string does not match the given $pattern.

Examples:

refute_match 'Four score and seven years ago...', qr/score/;

Parameters:

  • (String) $string -- The string to match.

  • (Regex) $pattern -- The regular expression to match against.

  • (String) $msg -- An optional description.

skip
skip($msg)

Allows the current test to be bypassed with an indeterminate status.

Parameters:

  • (String) $msg -- An optional description.

Class Methods

import
import($class)

Pulls all of the test-related methods into the calling package.