NAME

Test::Synopsis::Expectation - Test that SYNOPSIS code produces expected results

SYNOPSIS

use Test::Synopsis::Expectation;

synopsis_ok('eg/sample.pod');
done_testing;

Following, SYNOPSIS of eg/sample.pod

my $num;
$num = 1; # => 1
++$num;   # => is 2

use PPI::Tokenizer;
my $tokenizer = PPI::Tokenizer->new(\'code'); # => isa 'PPI::Tokenizer'

my $str = 'Hello, I love you'; # => like qr/ove/

my $obj = {
    foo => ["bar", "baz"],
}; # => is_deeply { foo => ["bar", "baz"] }

my $bool = 1; # => success

DESCRIPTION

This module checks that a module's SYNOPSIS section is syntactically correct, and will also check that it produces the expected results, based on annotations you add in comments.

FUNCTIONS

• synopsis_ok($files)

  This function tests SYNOPSIS codes of each files. This function expects file names as an argument as ARRAYREF or SCALAR. (This function is exported)

• all_synopsis_ok()

  This function tests SYNOPSIS codes of the all of library files. This function uses MANIFEST to list up the target files of testing. (This function is exported)

• prepare($code_str)

  Register the executable codes to prepare for evaluation.

  If you use like;

    use Test::Synopsis::Expectation;
    Test::Synopsis::Expectation::prepare('my $foo = 1;');
    synopsis_ok('path/to/target.pm');
    done_testing;
  
    ### Following, SYNOPSIS of `target.pm`
    $foo; # => 1
  

  Then, SYNOPSIS of target.pm is the same as;

    my $foo = 1;
    $foo; # => 1
  

  (This function is not exported)

• set_ignorings

  Set the procedures which would like to ignore.

    use Test::Synopsis::Expectation;
    Test::Synopsis::Expectation::set_ignorings(['++$num;']);
    synopsis_ok(*DATA);
    done_testing;
  
    __DATA__
    =head1 SYNOPSIS
  
        my $num;
        $num = 1; # => 1
        ++$num;
        $num; # => 1
  

  In the above example, ++$num; will be ignored.

NOTATION OF EXPECTATION

Comment that starts at # => then this module treats the comment as test statement.

• => is

    my $foo = 1; # => is 1
  

  This way is equivalent to the next.

    my $foo = 1;
    is $foo, 1;
  

  This carries out the same behavior as Test::More::is.

• =>

    my $foo = 1; # => 1
  

  This notation is the same as # => is

• => isa

    use Foo::Bar;
    my $instance = Foo::Bar->new; # => isa 'Foo::Bar'
  

  This way is equivalent to the next.

    use Foo::Bar;
    my $instance = Foo::Bar->new;
    isa_ok $instance, 'Foo::Bar';
  

  This carries out the same behavior as Test::More::isa_ok.

• => like

    my $str = 'Hello, I love you'; # => like qr/ove/
  

  This way is equivalent to the next.

    my $str = 'Hello, I love you';
    like $str, qr/ove/;
  

  This carries out the same behavior as Test::More::like.

• => is_deeply

    my $obj = {
        foo => ["bar", "baz"],
    }; # => is_deeply { foo => ["bar", "baz"] }
  

  This way is equivalent to the next.

    my $obj = {
        foo => ["bar", "baz"],
    };
    is_deeply $obj, { foo => ["bar", "baz"] };
  

  This carries out the same behavior as Test::More::is_deeply.

• => success

    my $bool = 1;
    $bool; # => success
  

  This way checks value as boolean. If target value of testing is 0 then this test will fail. Otherwise, it will pass.

ANNOTATIONS

• =for test_synopsis_expectation_no_test

  The code block behind this annotation will not be tested.

        my $sum;
        $sum = 1; # => 1
  
    =for test_synopsis_expectation_no_test
  
        my $sum;
        $sum = 1; # => 2
  

  In this example, the first code block will be tested, but the second will not.

RESTRICTION

Test case must be one line

The following is valid;

my $obj = {
    foo => ["bar", "baz"],
}; # => is_deeply { foo => ["bar", "baz"] }

However, the following is invalid;

my $obj = {
    foo => ["bar", "baz"],
}; # => is_deeply {
   #        foo => ["bar", "baz"]
   #    }

So test case must be one line.

Not put test cases inside of for(each)

# Example of not working
for (1..10) {
    my $foo = $_; # => 10
}

This example doesn't work. On the contrary, it will be error (Probably nobody uses such as this way... I think).

NOTES

yada-yada operator

This module ignores yada-yada operators that is in SYNOPSIS code. Thus, following code is runnable.

my $foo;
...
$foo = 1; # => 1

SEE ALSO

Test::Synopsis - simpler module, which just checks the syntax of your SYNOPSIS section.

Dist::Zilla::Plugin::Test::Synopsis - a plugin for Dist::Zilla users, which adds a release test to your distribution, based on Test::Synopsis.

REPOSITORY

https://github.com/moznion/Test-Synopsis-Expectation

LICENSE

Copyright (C) moznion.

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

AUTHOR

moznion moznion@gmail.com