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# NAME
**Test::Expander** - Expansion of test functionalities that appear to be frequently used while testing.
# SYNOPSIS
```perl
# Tries to determine both class and method to be tested automatically,
# does not create any temporary directory:
use Test::Expander;
# Tries to determine both class and method to be tested automatically,
# does not create any temporary directory,
# passes the option '-srand' to Test::V0 changing the random seed to the current time in seconds:
use Test::Expander -srand => time;
# Tries to determine only the method to be tested automatically, class is explicitly supplied,
# a temporary directory is created with name corresponing to the template supplied:
use Test::Expander -target => 'My::Class', -tempdir => { TEMPLATE => 'my_dir.XXXXXXXX' };
```
# DESCRIPTION
**Test::Expander** combines all advanced possibilities provided by [Test2::V0](https://metacpan.org/pod/Test2::V0)
with some specific functions available in the older module [Test::More](https://metacpan.org/pod/Test::More) only
(which allows a smooth migration from [Test::More](https://metacpan.org/pod/Test::More)-based tests to
[Test2::V0](https://metacpan.org/pod/Test2::V0)-based ones) and handy functions from some other modules
often used in test suites.
Furthermore, this module provides a recognition of class to be tested (see variable **$CLASS** below) so that
in contrast to [Test2::V0](https://metacpan.org/pod/Test2::V0) you do not need to specify this explicitly
if the path to the test file is in accordance with the name of class to be tested.
A similar recognition is provided in regard to the method / subroutine to be tested
(see variables **$METHOD** and **METHOD\_REF** below) if the base name (without extension) of test file is
identical with the name of this method / subroutine.
Finally, a configurable setting of specific environment variables is provided so that
there is no need to hard-code this in the test itself.
For the time being the following options are accepted by **Test::Expander**:
- Options specific for this module only:
- **-target** - identical with the same-named option of [Test2::V0](https://metacpan.org/pod/Test2::V0) and
has the same purpose namely the explicit definition of class to be tested as a value of this option;
- **-tempdir** - activates creation of a temporary directory by the function **tempdir** provided by
[File::Temp::tempdir](https://metacpan.org/pod/File::Temp).
- **-tempfile** - activates creation of a temporary file by the method **tempfile** provided by
[File::Temp::tempfile](https://metacpan.org/pod/File::Temp).
- All other valid options (i.e. arguments starting with the dash sign **-**) are forwarded to
[Test2::V0](https://metacpan.org/pod/Test2::V0) along with their values.
- If an argument cannot be recognized as an option, an exception is raised.
The proper application of **Test::Expander** implies that is is used as the very first in your unit test.
The only exception currently known is the case, when some actions performed on the module level
(e.g. determination of constants) base on results of other actions (e.g. mocking of built-ins).
To explain this let us assume that your unit test file should mock the built-in **close**
to verify if the testee properly reacts both on its success and failure.
For this purpose a reasonable implementation might look as follows:
```perl
my $closeSuccess = 1;
BEGIN {
*CORE::GLOBAL::close = sub (*) { return $closeSuccess ? CORE::close($_[0]) : 0 };
}
use Test::Expander;
```
Furthermore, the automated recognition of name of class to be tested can only work properly
if the test file is located in the corresponding subdirectory of **t**, or **xt**, or any other folder
containing a bunch of test files.
For instance, if the class to be tested is _Foo::Bar::Baz_, then the folder with test files
related to this class should be **t/**_Foo_**/**_Bar_**/**_Baz_ or **xt/**_Foo_**/**_Bar_**/**_Baz_
(the name of the top-level directory in this relative name - **t**, or **xt**, or **my\_test** is not important) -
otherwise the module name cannot be put into the exported variable **$CLASS** and, if you want to use this variable,
should be supplied as a value of the option **-target**:
```perl
use Test::Expander -target => 'Foo::Bar::Baz';
```
What is more, the automated recognition of name of method / subroutine to be tested can only work properly
if the base name of the test file without extension (usually **.t**) is equal to the method / subroutine
name. In other words, this recognition only works if the file containing the class mentioned above exists and
if this class has the method / subroutine with the same name as the test file base name without extension.
If this is the case, the exported variables **$METHOD** and **$METHOD\_REF** contain the name of method / subroutine
to be tested and its reference, correspondingly, otherwise both variables are undefined.
Finally, **Test::Expander** supports testing inside of a clean environment containing only some clearly
specified environment variables required for the particular test.
Names and values of these environment variables should be configured in files,
which names are identical with pathes to single class levels or method to be tested,
and the extension is always **.env**.
For instance, if the test file name is **t/Foo/Bar/Baz/myMethod.t**, the following approach is applied:
- if the file **t/Foo.env** exists, its content is used for the initialization of test environment,
- if the file **t/Foo/Bar.env** exists, its content is used either for extension of test environment
initialized in the previous step or for its initialization if the file **t/Foo.env** does not exist,
- if the file **t/Foo/Bar/Baz.env** exists, its content is used either for extension of test
environment initialized in one of the previous steps or for its initialization if neither the file **t/Foo.env** nor
the file **t/Foo/Bar.env** exists,
- if the file **t/Foo/Bar/Baz/myMethod.env** exists, its content will be used either for extension of test environment
initialized in one of the previous steps or for its initialization if no one of **.env** files mentioned above exists.
If the **.env** files existing on different levels have identical names of environment variables,
the priority is the higher the later they have been detected.
I.e. **VAR = 'VALUE0'** in **t/Foo/Bar/Baz/myMethod.env** overwrites **VAR = 'VALUE1'** in **t/Foo/Bar/Baz.env**.
If no one of these **.env** files exists, the environment will not be changed by **Test::Expander**
during the execution of **t/Foo/Bar/Baz/myMethod.t**.
An environment configuration file (**.env** file) is a line-based text file,
which content is interpreted as follows:
- if such files don't exist, the **%ENV** hash remains unchanged;
- otherwise, if at least one of such files exists, the **%ENV** gets emptied (without localization) and
- lines not matching the RegEx **/^\\w+\\s\\\*=\\s\\\*\\S/** (some alphanumeric characters representing a name of
environment variable, optional blanks, the equal sign, again optional blanks and at least one non-blank
character representing the first sign of environment variable value) are skipped;
- in all other lines the value of the environment variable is everything from the first non-blank
character after the equal sign until end of the line;
- the value of the environment variable is evaluated by the [string eval](https://perldoc.perl.org/functions/eval)
so that
- constant values must be quoted;
- variables and subroutines must not be quoted:
NAME_CONST = 'VALUE'
NAME_VAR = $KNIB::App::MyApp::Constants::ABC
NAME_FUNC = join(' ', $KNIB::App::MyApp::Constants::DEF)
Another feature frequently applied inside of test suites is creation of a temporary directory / file used as an
isolated container for some testing actions.
The module options **-tempdir** and **-tempfile** fully synactically compatible with
[File::Temp::tempdir](https://metacpan.org/pod/File::Temp#FUNCTIONS) /
[File::Temp::tempfile](https://metacpan.org/pod/File::Temp#FUNCTIONS) make sure that such temporary
directory / file are created after **use Test::Expander** and their names are stored in the variables
**$TEMP\_DIR** / **$TEMP\_FILE**, correspondingly.
Both temporary directory and file are removed by default after execution.
All functions provided by this module are exported by default. These and the exported variables are:
- all functions exported by default from [Test2::V0](https://metacpan.org/pod/Test2::V0),
- all functions exported by default from [Test::Files](https://metacpan.org/pod/Test::Files),
- all functions exported by default from [Test::Output](https://metacpan.org/pod/Test::Output),
- all functions exported by default from [Test::Warn](https://metacpan.org/pod/Test::Warn),
- some functions exported by default from [Test::More](https://metacpan.org/pod/Test::More)
and often used in older tests but not supported by [Test2::V0](https://metacpan.org/pod/Test2::V0):
- BAIL\_OUT,
- is\_deeply,
- new\_ok,
- require\_ok,
- use\_ok,
- some functions exported by default from [Test::Exception](https://metacpan.org/pod/Test::Exception)
and often used in older tests but not supported by [Test2::V0](https://metacpan.org/pod/Test2::V0):
- dies\_ok,
- explain,
- lives\_ok,
- throws\_ok,
- function exported by default from [Const::Fast](https://metacpan.org/pod/Const::Fast):
- const,
- some functions exported by request from [File::Temp](https://metacpan.org/pod/File::Temp):
- tempdir,
- tempfile,
- some functions exported by request from [Path::Tiny](https://metacpan.org/pod/Path::Tiny):
- cwd,
- path,
- variable **$CLASS** containing the name of class to be tested,
- variable **$METHOD** containing the name of method to be tested,
- variable **$METHOD\_REF** containing the reference to subroutine to be tested.
- variable **$TEMP\_DIR** containing the name of a temporary directory created at compile time
if the option **-tempdir** was supplied.
- variable **$TEMP\_FILE** containing the name of a temporary file created at compile time
if the option **-tempfile** was supplied.
All variables mentioned above are read-only if they are defined after **use Test::Expander ...**.
# AUTHOR
Jurij Fajnberg, <fajnbergj at gmail.com>
# BUGS
Please report any bugs or feature requests through the web interface at
[https://github.com/jsf116/Test-Expander/issues](https://github.com/jsf116/Test-Expander/issues).
# COPYRIGHT AND LICENSE
## LICENSE AND COPYRIGHT
Copyright (c) 2021 Jurij Fajnberg
This program is free software; you can redistribute it and/or modify it under the same terms
as the Perl 5 programming language system itself.

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## no critic (ProhibitStringyEval ProhibitSubroutinePrototypes RequireLocalizedPunctuationVars)
package Test::Expander;
our $VERSION = '1.0.0'; ## no critic (RequireUseStrict, RequireUseWarnings)
use v5.14;
use warnings
FATAL => qw(all),
NONFATAL => qw(deprecated exec internal malloc newline portable recursion);
no warnings qw(experimental);
use Const::Fast;
use File::chdir;
use File::Temp qw(tempdir tempfile);
use Importer;
use Path::Tiny qw(cwd path);
use Scalar::Readonly qw(readonly_on);
use Test::Files;
use Test::Output;
use Test::Warn;
use Test2::Tools::Explain;
use Test2::V0 ();
use Test::Expander::Constants qw(
$ANY_EXTENSION
$CLASS_HIERARCHY_LEVEL
$ERROR_WAS
$FALSE
$EXCEPTION_PREFIX
$INVALID_ENV_ENTRY
$INVALID_VALUE
$NEW_FAILED $NEW_SUCCEEDED
$REPLACEMENT
$REQUIRE_DESCRIPTION $REQUIRE_IMPLEMENTATION
$SEARCH_PATTERN
$TOP_DIR_IN_PATH
$TRUE
$UNKNOWN_OPTION
$USE_DESCRIPTION $USE_IMPLEMENTATION
$VERSION_NUMBER
);
readonly_on($VERSION);
our ($CLASS, $METHOD, $METHOD_REF, $TEMP_DIR, $TEMP_FILE);
our @EXPORT = (
@{Const::Fast::EXPORT},
@{Test::Files::EXPORT},
@{Test::Output::EXPORT},
@{Test::Warn::EXPORT},
@{Test2::Tools::Explain::EXPORT},
@{Test2::V0::EXPORT},
qw(tempdir tempfile),
qw(cwd path),
qw($CLASS $METHOD $METHOD_REF $TEMP_DIR $TEMP_FILE),
qw(BAIL_OUT dies_ok is_deeply lives_ok new_ok require_ok throws_ok use_ok),
);
*BAIL_OUT = \&bail_out; # Explicit "sub BAIL_OUT" would be untestable
sub dies_ok (&;$) {
my ($coderef, $description) = @_;
eval { $coderef->() };
return ok($@, $description);
}
sub import {
my ($class, @exports) = @_;
my %options;
while (my $optionName = shift(@exports)) {
given ($optionName) {
when ('-tempdir') {
my $optionValue = shift(@exports);
die(sprintf($INVALID_VALUE, $optionName, $optionValue)) if ref($optionValue) ne 'HASH';
$TEMP_DIR = tempdir(CLEANUP => 1, %$optionValue);
}
when ('-tempfile') {
my $optionValue = shift(@exports);
die(sprintf($INVALID_VALUE, $optionName, $optionValue)) if ref($optionValue) ne 'HASH';
my $fileHandle;
($fileHandle, $TEMP_FILE) = tempfile(UNLINK => 1, %$optionValue);
}
when (/^-\w/) {
$options{$optionName} = shift(@exports);
}
default {
die(sprintf($UNKNOWN_OPTION, $optionName, shift(@exports) // ''));
}
}
}
my $testFile = path((caller(2))[1]) =~ s{^/}{}r; ## no critic (ProhibitMagicNumbers)
my ($testRoot) = $testFile =~ $TOP_DIR_IN_PATH;
unless (exists($options{-target})) {
my $testee = path($testFile)->relative($testRoot)->parent;
$options{-target} = join('::', split(qr{/}, $testee))
if grep { path($_)->child($testee . '.pm')->is_file } @INC;
}
$METHOD = path($testFile)->basename($ANY_EXTENSION);
my $startDir = cwd();
_setEnv($METHOD, $options{-target}, $testFile);
Test2::V0->import(%options);
$METHOD_REF = '-target' ~~ %options ? $CLASS->can($METHOD) : undef;
$METHOD = undef unless($METHOD_REF);
readonly_on($CLASS) if $CLASS;
readonly_on($METHOD) if $METHOD;
readonly_on($METHOD_REF) if $METHOD_REF;
readonly_on($TEMP_DIR) if $TEMP_DIR;
readonly_on($TEMP_FILE) if $TEMP_FILE;
Importer->import_into($class, scalar(caller), ());
return;
}
sub is_deeply ($$;$@) {
my ($got, $expected, $title) = @_;
return is($got, $expected, $title);
}
sub lives_ok (&;$) {
my ($coderef, $description) = @_;
eval { $coderef->() };
return ok(!$@, $description);
}
sub new_ok {
my ($class, $args) = @_;
$args ||= [];
my $obj = eval { $class->new(@$args) };
ok(!$@, _newTestMessage($class));
return $obj;
}
sub require_ok {
my ($module) = @_;
my $package = caller;
my $requireResult = eval(sprintf($REQUIRE_IMPLEMENTATION, $package, $module));
ok($requireResult, sprintf($REQUIRE_DESCRIPTION, $module, _error()));
return $requireResult;
}
sub throws_ok (&$;$) {
my ($coderef, $expecting, $description) = @_;
eval { $coderef->() };
return like($@, qr/$expecting/, $description);
}
sub use_ok ($;@) {
my ($module, @imports) = @_;
my ($package, $filename, $line) = caller(0);
$filename =~ y/\n\r/_/; # taken over from Test::More
my $requireResult = eval(sprintf($USE_IMPLEMENTATION, $package, $module, _useImports(\@imports)));
ok(
$requireResult,
sprintf($USE_DESCRIPTION, $module, _error($SEARCH_PATTERN, sprintf($REPLACEMENT, $filename, $line)))
);
return $requireResult;
}
sub _error {
my ($searchString, $replacementString) = @_;
return '' if $@ eq '';
my $error = $ERROR_WAS . $@ =~ s/\n$//mr;
$error =~ s/$searchString/$replacementString/m if defined($searchString);
return $error;
}
sub _newTestMessage {
my ($class) = @_;
return $@ ? sprintf($NEW_FAILED, $class, _error()) : sprintf($NEW_SUCCEEDED, $class, $class);
}
sub _readEnvFile {
my ($envFile) = @_;
my @lines = path($envFile)->lines({ chomp => 1 });
my %env;
while (my ($index, $line) = each(@lines)) {
next unless $line =~ /^ (?<name> \w+) \s* = \s* (?<value> \S .*)/x;
$env{$+{name}} = eval($+{value});
die(sprintf($INVALID_ENV_ENTRY, $index, $envFile, $line, $@)) if $@;
}
return \%env;
}
sub _setEnv {
my ($method, $class, $testFile) = @_;
my $envFound = $FALSE;
my $newEnv = {};
{
local $CWD = $testFile =~ s{/.*}{}r; ## no critic (ProhibitLocalVars)
($envFound, $newEnv) = _setEnvHierarchically($class, $envFound, $newEnv);
}
my $envFile = $testFile =~ s/$ANY_EXTENSION/.env/r;
if (path($envFile)->is_file) {
$envFound = $TRUE unless $envFound;
my $methodEnv = _readEnvFile($envFile);
@$newEnv{keys(%$methodEnv)} = values(%$methodEnv)
}
%ENV = %$newEnv if $envFound;
return;
}
sub _setEnvHierarchically {
my ($class, $envFound, $newEnv) = @_;
return ($envFound, $newEnv) unless $class;
my $classTopLevel;
($classTopLevel, $class) = $class =~ $CLASS_HIERARCHY_LEVEL;
return ($FALSE, {}) unless path($classTopLevel)->is_dir;
my $envFile = $classTopLevel . '.env';
if (path($envFile)->is_file) {
$envFound = $TRUE unless $envFound;
$newEnv = { %$newEnv, %{ _readEnvFile($envFile) } };
}
local $CWD = $classTopLevel; ## no critic (ProhibitLocalVars)
return _setEnvHierarchically($class, $envFound, $newEnv);
}
sub _useImports {
my ($imports) = @_;
return @$imports == 1 && $imports->[0] =~ $VERSION_NUMBER ? ' ' . $imports->[0] : '';
}
1;

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=pod
=head1 NAME
B<Test::Expander> - Expansion of test functionalities that appear to be frequently used while testing.
=head1 SYNOPSIS
# Tries to determine both class and method to be tested automatically,
# does not create any temporary directory:
use Test::Expander;
# Tries to determine both class and method to be tested automatically,
# does not create any temporary directory,
# passes the option '-srand' to Test::V0 changing the random seed to the current time in seconds:
use Test::Expander -srand => time;
# Tries to determine only the method to be tested automatically, class is explicitly supplied,
# a temporary directory is created with name corresponing to the template supplied:
use Test::Expander -target => 'My::Class', -tempdir => { TEMPLATE => 'my_dir.XXXXXXXX' };
=head1 DESCRIPTION
B<Test::Expander> combines all advanced possibilities provided by L<Test2::V0|https://metacpan.org/pod/Test2::V0>
with some specific functions available in the older module L<Test::More|https://metacpan.org/pod/Test::More> only
(which allows a smooth migration from L<Test::More|https://metacpan.org/pod/Test::More>-based tests to
L<Test2::V0|https://metacpan.org/pod/Test2::V0>-based ones) and handy functions from some other modules
often used in test suites.
Furthermore, this module provides a recognition of class to be tested (see variable B<$CLASS> below) so that
in contrast to L<Test2::V0|https://metacpan.org/pod/Test2::V0> you do not need to specify this explicitly
if the path to the test file is in accordance with the name of class to be tested.
A similar recognition is provided in regard to the method / subroutine to be tested
(see variables B<$METHOD> and B<METHOD_REF> below) if the base name (without extension) of test file is
identical with the name of this method / subroutine.
Finally, a configurable setting of specific environment variables is provided so that
there is no need to hard-code this in the test itself.
For the time being the following options are accepted by B<Test::Expander>:
=over 2
=item
Options specific for this module only:
=over 2
=item
B<-target> - identical with the same-named option of L<Test2::V0|https://metacpan.org/pod/Test2::V0> and
has the same purpose namely the explicit definition of class to be tested as a value of this option;
=item
B<-tempdir> - activates creation of a temporary directory by the function B<tempdir> provided by
L<File::Temp::tempdir|https://metacpan.org/pod/File::Temp>.
=item
B<-tempfile> - activates creation of a temporary file by the method B<tempfile> provided by
L<File::Temp::tempfile|https://metacpan.org/pod/File::Temp>.
=back
=item
All other valid options (i.e. arguments starting with the dash sign B<->) are forwarded to
L<Test2::V0|https://metacpan.org/pod/Test2::V0> along with their values.
=item
If an argument cannot be recognized as an option, an exception is raised.
=back
The proper application of B<Test::Expander> implies that is is used as the very first in your unit test.
The only exception currently known is the case, when some actions performed on the module level
(e.g. determination of constants) base on results of other actions (e.g. mocking of built-ins).
To explain this let us assume that your unit test file should mock the built-in B<close>
to verify if the testee properly reacts both on its success and failure.
For this purpose a reasonable implementation might look as follows:
my $closeSuccess = 1;
BEGIN {
*CORE::GLOBAL::close = sub (*) { return $closeSuccess ? CORE::close($_[0]) : 0 };
}
use Test::Expander;
Furthermore, the automated recognition of name of class to be tested can only work properly
if the test file is located in the corresponding subdirectory of B<t>, or B<xt>, or any other folder
containing a bunch of test files.
For instance, if the class to be tested is I<Foo::Bar::Baz>, then the folder with test files
related to this class should be B<t/>I<Foo>B</>I<Bar>B</>I<Baz> or B<xt/>I<Foo>B</>I<Bar>B</>I<Baz>
(the name of the top-level directory in this relative name - B<t>, or B<xt>, or B<my_test> is not important) -
otherwise the module name cannot be put into the exported variable B<$CLASS> and, if you want to use this variable,
should be supplied as a value of the option B<-target>:
use Test::Expander -target => 'Foo::Bar::Baz';
What is more, the automated recognition of name of method / subroutine to be tested can only work properly
if the base name of the test file without extension (usually B<.t>) is equal to the method / subroutine
name. In other words, this recognition only works if the file containing the class mentioned above exists and
if this class has the method / subroutine with the same name as the test file base name without extension.
If this is the case, the exported variables B<$METHOD> and B<$METHOD_REF> contain the name of method / subroutine
to be tested and its reference, correspondingly, otherwise both variables are undefined.
Finally, B<Test::Expander> supports testing inside of a clean environment containing only some clearly
specified environment variables required for the particular test.
Names and values of these environment variables should be configured in files,
which names are identical with pathes to single class levels or method to be tested,
and the extension is always B<.env>.
For instance, if the test file name is B<t/Foo/Bar/Baz/myMethod.t>, the following approach is applied:
=over 2
=item
if the file B<t/Foo.env> exists, its content is used for the initialization of test environment,
=item
if the file B<t/Foo/Bar.env> exists, its content is used either for extension of test environment
initialized in the previous step or for its initialization if the file B<t/Foo.env> does not exist,
=item
if the file B<t/Foo/Bar/Baz.env> exists, its content is used either for extension of test
environment initialized in one of the previous steps or for its initialization if neither the file B<t/Foo.env> nor
the file B<t/Foo/Bar.env> exists,
=item
if the file B<t/Foo/Bar/Baz/myMethod.env> exists, its content will be used either for extension of test environment
initialized in one of the previous steps or for its initialization if no one of B<.env> files mentioned above exists.
=back
If the B<.env> files existing on different levels have identical names of environment variables,
the priority is the higher the later they have been detected.
I.e. B<VAR = 'VALUE0'> in B<t/Foo/Bar/Baz/myMethod.env> overwrites B<VAR = 'VALUE1'> in B<t/Foo/Bar/Baz.env>.
If no one of these B<.env> files exists, the environment will not be changed by B<Test::Expander>
during the execution of B<t/Foo/Bar/Baz/myMethod.t>.
An environment configuration file (B<.env> file) is a line-based text file,
which content is interpreted as follows:
=over 2
=item
if such files don't exist, the B<%ENV> hash remains unchanged;
=item
otherwise, if at least one of such files exists, the B<%ENV> gets emptied (without localization) and
=over 2
=item
lines not matching the RegEx B</^\w+\s\*=\s\*\S/> (some alphanumeric characters representing a name of
environment variable, optional blanks, the equal sign, again optional blanks and at least one non-blank
character representing the first sign of environment variable value) are skipped;
=item
in all other lines the value of the environment variable is everything from the first non-blank
character after the equal sign until end of the line;
=item
the value of the environment variable is evaluated by the L<string eval|https://perldoc.perl.org/functions/eval>
so that
=over 2
=item
constant values must be quoted;
=item
variables and subroutines must not be quoted:
NAME_CONST = 'VALUE'
NAME_VAR = $KNIB::App::MyApp::Constants::ABC
NAME_FUNC = join(' ', $KNIB::App::MyApp::Constants::DEF)
=back
=back
=back
Another feature frequently applied inside of test suites is creation of a temporary directory / file used as an
isolated container for some testing actions.
The module options B<-tempdir> and B<-tempfile> fully synactically compatible with
L<File::Temp::tempdir|https://metacpan.org/pod/File::Temp#FUNCTIONS> /
L<File::Temp::tempfile|https://metacpan.org/pod/File::Temp#FUNCTIONS> make sure that such temporary
directory / file are created after B<use Test::Expander> and their names are stored in the variables
B<$TEMP_DIR> / B<$TEMP_FILE>, correspondingly.
Both temporary directory and file are removed by default after execution.
All functions provided by this module are exported by default. These and the exported variables are:
=over 2
=item
all functions exported by default from L<Test2::V0|https://metacpan.org/pod/Test2::V0>,
=item
all functions exported by default from L<Test::Files|https://metacpan.org/pod/Test::Files>,
=item
all functions exported by default from L<Test::Output|https://metacpan.org/pod/Test::Output>,
=item
all functions exported by default from L<Test::Warn|https://metacpan.org/pod/Test::Warn>,
=item
some functions exported by default from L<Test::More|https://metacpan.org/pod/Test::More>
and often used in older tests but not supported by L<Test2::V0|https://metacpan.org/pod/Test2::V0>:
=over 2
=item
BAIL_OUT,
=item
is_deeply,
=item
new_ok,
=item
require_ok,
=item
use_ok,
=back
=item
some functions exported by default from L<Test::Exception|https://metacpan.org/pod/Test::Exception>
and often used in older tests but not supported by L<Test2::V0|https://metacpan.org/pod/Test2::V0>:
=over 2
=item
dies_ok,
=item
explain,
=item
lives_ok,
=item
throws_ok,
=back
=item
function exported by default from L<Const::Fast|https://metacpan.org/pod/Const::Fast>:
=over 2
=item
const,
=back
=item
some functions exported by request from L<File::Temp|https://metacpan.org/pod/File::Temp>:
=over 2
=item
tempdir,
=item
tempfile,
=back
=item
some functions exported by request from L<Path::Tiny|https://metacpan.org/pod/Path::Tiny>:
=over 2
=item
cwd,
=item
path,
=back
=item
variable B<$CLASS> containing the name of class to be tested,
=item
variable B<$METHOD> containing the name of method to be tested,
=item
variable B<$METHOD_REF> containing the reference to subroutine to be tested.
=item
variable B<$TEMP_DIR> containing the name of a temporary directory created at compile time
if the option B<-tempdir> was supplied.
=item
variable B<$TEMP_FILE> containing the name of a temporary file created at compile time
if the option B<-tempfile> was supplied.
=back
All variables mentioned above are read-only if they are defined after B<use Test::Expander ...>.
=head1 AUTHOR
Jurij Fajnberg, <fajnbergj at gmail.com>
=head1 BUGS
Please report any bugs or feature requests through the web interface at
L<https://github.com/jsf116/Test-Expander/issues>.
=head1 COPYRIGHT AND LICENSE
=head2 LICENSE AND COPYRIGHT
Copyright (c) 2021 Jurij Fajnberg
This program is free software; you can redistribute it and/or modify it under the same terms
as the Perl 5 programming language system itself.
=cut

35
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## no critic (RequireVersionVar)
package Test::Expander::Constants;
use v5.14.2;
use warnings
FATAL => qw(all),
NONFATAL => qw(deprecated exec internal malloc newline portable recursion);
use Const::Fast;
use Exporter qw(import);
use PadWalker qw(peek_our);
const our $ANY_EXTENSION => qr/ \. [^.]+ $/x;
const our $CLASS_HIERARCHY_LEVEL => qr/^( \w+ ) (?: :: ( .+ ) )?/x;
const our $ERROR_WAS => ' Error was: ';
const our $FALSE => 0;
const our $EXCEPTION_PREFIX => 'BEGIN failed--compilation aborted at ';
const our $INVALID_ENV_ENTRY => "Erroneous line %d of '%s' containing '%s': %s\n";
const our $INVALID_VALUE => "Option '%s' passed along with invalid value '%s'\n";
const our $NEW_FAILED => '%s->new died.%s';
const our $NEW_SUCCEEDED => "An object of class '%s' isa '%s'";
const our $REPLACEMENT => $EXCEPTION_PREFIX . '%s line %s.';
const our $REQUIRE_DESCRIPTION => 'require %s;%s';
const our $REQUIRE_IMPLEMENTATION => 'package %s; require %s';
const our $SEARCH_PATTERN => $EXCEPTION_PREFIX . '.*$';
const our $TOP_DIR_IN_PATH => qr{^ ( [^/]+ )}x;
const our $TRUE => 1;
const our $UNKNOWN_OPTION => "Unknown option '%s' => '%s' supplied.\n";
const our $USE_DESCRIPTION => 'use %s;%s';
const our $USE_IMPLEMENTATION => 'package %s; use %s%s; 1';
const our $VERSION_NUMBER => qr/^ \d+ (?: \. \d+ )* $/x;
push(our @EXPORT_OK, keys(%{peek_our(0)}));
1;

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# You may disable specific policies appending the following annotation
#
# ## no critic (..., ...)
#
# to the corresponding code line. To direct perlcritic to ignore the
# "## no critic" annotations, use the --force option.
# Policies shipped with Perl::Critic 1.125 were considered for the below
# defintion of the new policy theme "critic".
severity = brutal
theme = critic
verbose = %f: %m at line %l, column %c. (Policy: %p)\n
[Perl::Critic::Policy::BuiltinFunctions::ProhibitLvalueSubstr]
add_themes = critic
[Perl::Critic::Policy::BuiltinFunctions::ProhibitStringyEval]
add_themes = critic
allow_includes = 1
[Perl::Critic::Policy::BuiltinFunctions::ProhibitStringySplit]
add_themes = critic
[Perl::Critic::Policy::BuiltinFunctions::ProhibitUniversalCan]
add_themes = critic
[Perl::Critic::Policy::BuiltinFunctions::ProhibitUniversalIsa]
add_themes = critic
[Perl::Critic::Policy::BuiltinFunctions::ProhibitUselessTopic]
# KNOWN BUGS: This policy flags a false positive on reverse() called in list
# context, since reverse() in list context does not assume $_.
add_themes = critic
[Perl::Critic::Policy::BuiltinFunctions::ProhibitVoidGrep]
add_themes = critic
[Perl::Critic::Policy::BuiltinFunctions::ProhibitVoidMap]
add_themes = critic
[Perl::Critic::Policy::BuiltinFunctions::RequireBlockGrep]
add_themes = critic
[Perl::Critic::Policy::BuiltinFunctions::RequireBlockMap]
add_themes = critic
[Perl::Critic::Policy::BuiltinFunctions::RequireSimpleSortBlock]
add_themes = critic
[Perl::Critic::Policy::ClassHierarchies::ProhibitExplicitISA]
# Note: Some people prefer parent over base.
add_themes = critic
[Perl::Critic::Policy::CodeLayout::ProhibitHardTabs]
add_themes = critic
allow_leading_tabs = 0
[Perl::Critic::Policy::CodeLayout::ProhibitTrailingWhitespace]
add_themes = critic
[Perl::Critic::Policy::CodeLayout::RequireConsistentNewlines]
add_themes = critic
[Perl::Critic::Policy::ControlStructures::ProhibitCStyleForLoops]
add_themes = critic
[Perl::Critic::Policy::ControlStructures::ProhibitCascadingIfElse]
add_themes = critic
max_elsif = 1
[Perl::Critic::Policy::ControlStructures::ProhibitDeepNests]
# Martin Fowler's book "Refactoring: Improving The Design of Existing Code".
add_themes = critic
max_nests = 5
[Perl::Critic::Policy::ControlStructures::ProhibitLabelsWithSpecialBlockNames]
add_themes = critic
[Perl::Critic::Policy::ControlStructures::ProhibitMutatingListFunctions]
# Read the LIMITATIONS that this policy has.
add_themes = critic
[Perl::Critic::Policy::ControlStructures::ProhibitNegativeExpressionsInUnlessAndUntilConditions]
add_themes = critic
[Perl::Critic::Policy::ControlStructures::ProhibitUnreachableCode]
add_themes = critic
[Perl::Critic::Policy::Documentation::PodSpelling]
add_themes =
[Perl::Critic::Policy::Documentation::RequirePackageMatchesPodName]
add_themes = critic
[Perl::Critic::Policy::InputOutput::ProhibitBacktickOperators]
add_themes = critic
only_in_void_context = 1
[Perl::Critic::Policy::InputOutput::ProhibitBarewordFileHandles]
add_themes = critic
[Perl::Critic::Policy::InputOutput::ProhibitExplicitStdin]
add_themes = critic
[Perl::Critic::Policy::InputOutput::ProhibitInteractiveTest]
add_themes = critic
[Perl::Critic::Policy::InputOutput::ProhibitJoinedReadline]
add_themes = critic
[Perl::Critic::Policy::InputOutput::ProhibitReadlineInForLoop]
add_themes = critic
[Perl::Critic::Policy::InputOutput::ProhibitTwoArgOpen]
add_themes = critic
[Perl::Critic::Policy::InputOutput::RequireBriefOpen]
# http://www.perlmonks.org/?node_id=1134785
add_themes = critic
lines = 9
[Perl::Critic::Policy::InputOutput::RequireCheckedSyscalls]
# Covers the policies
# Perl::Critic::Policy::InputOutput::RequireCheckedClose and
# Perl::Critic::Policy::InputOutput::RequireCheckedOpen
add_themes = critic
exclude_functions = print say
functions = :builtins
[Perl::Critic::Policy::InputOutput::RequireEncodingWithUTF8Layer]
add_themes = critic
[Perl::Critic::Policy::Miscellanea::ProhibitUnrestrictedNoCritic]
add_themes = critic
[Perl::Critic::Policy::Miscellanea::ProhibitUselessNoCritic]
add_themes = critic
[Perl::Critic::Policy::Modules::ProhibitAutomaticExportation]
add_themes = critic
[Perl::Critic::Policy::Modules::ProhibitConditionalUseStatements]
add_themes = critic
[Perl::Critic::Policy::Modules::ProhibitEvilModules]
add_themes = critic
modules = Class::ISA Error Pod::Plainer Shell Switch
[Perl::Critic::Policy::Modules::ProhibitExcessMainComplexity]
# http://en.wikipedia.org/wiki/Cyclomatic_complexity
add_themes = critic
max_mccabe = 20
[Perl::Critic::Policy::Modules::ProhibitMultiplePackages]
add_themes = critic
[Perl::Critic::Policy::Modules::RequireBarewordIncludes]
add_themes = critic
[Perl::Critic::Policy::Modules::RequireEndWithOne]
add_themes = critic
[Perl::Critic::Policy::Modules::RequireFilenameMatchesPackage]
add_themes = critic
[Perl::Critic::Policy::Modules::RequireNoMatchVarsWithUseEnglish]
add_themes = critic
[Perl::Critic::Policy::Objects::ProhibitIndirectSyntax]
add_themes = critic
# The new() subroutine is configured by default; any additional forbid values
# are in addition to new().
forbid = create destroy
[Perl::Critic::Policy::RegularExpressions::ProhibitFixedStringMatches]
add_themes = critic
[Perl::Critic::Policy::RegularExpressions::ProhibitSingleCharAlternation]
add_themes = critic
[Perl::Critic::Policy::RegularExpressions::ProhibitUnusedCapture]
add_themes = critic
[Perl::Critic::Policy::RegularExpressions::ProhibitUnusualDelimiters]
add_themes = critic
allow_all_brackets = 0
[Perl::Critic::Policy::RegularExpressions::ProhibitUselessTopic]
add_themes = critic
[Perl::Critic::Policy::RegularExpressions::RequireBracesForMultiline]
add_themes = critic
allow_all_brackets = 0
[Perl::Critic::Policy::Subroutines::ProhibitAmpersandSigils]
add_themes = critic
[Perl::Critic::Policy::Subroutines::ProhibitBuiltinHomonyms]
# Read the CAVEATS.
add_themes = critic
[Perl::Critic::Policy::Subroutines::ProhibitExcessComplexity]
# http://en.wikipedia.org/wiki/Cyclomatic_complexity
add_themes = critic
max_mccabe = 20
[Perl::Critic::Policy::Subroutines::ProhibitExplicitReturnUndef]
# http://perlmonks.org/index.pl?node_id=741847
add_themes = critic
[Perl::Critic::Policy::Subroutines::ProhibitManyArgs]
add_themes = critic
max_arguments = 5
[Perl::Critic::Policy::Subroutines::ProhibitNestedSubs]
add_themes = critic
[Perl::Critic::Policy::Subroutines::ProhibitReturnSort]
# KNOWN BUGS: This Policy is not sensitive to the wantarray() function.
add_themes = critic
[Perl::Critic::Policy::Subroutines::ProhibitSubroutinePrototypes]
add_themes = critic
[Perl::Critic::Policy::Subroutines::ProhibitUnusedPrivateSubroutines]
add_themes = critic
[Perl::Critic::Policy::Subroutines::ProtectPrivateSubs]
add_themes = critic
[Perl::Critic::Policy::Subroutines::RequireArgUnpacking]
add_themes = critic
allow_delegation_to = SUPER:: NEXT::
allow_subscripts = 0
short_subroutine_statements = 0
[Perl::Critic::Policy::Subroutines::RequireFinalReturn]
add_themes = critic
terminal_funcs = return carp croak die exec exit goto throw
[Perl::Critic::Policy::TestingAndDebugging::ProhibitNoStrict]
add_themes = critic
allow = refs
[Perl::Critic::Policy::TestingAndDebugging::ProhibitNoWarnings]
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allow_with_category_restriction = 1
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add_themes = critic
statements = 3
[Perl::Critic::Policy::TestingAndDebugging::RequireUseStrict]
add_themes = critic
[Perl::Critic::Policy::TestingAndDebugging::RequireUseWarnings]
add_themes = critic
[Perl::Critic::Policy::ValuesAndExpressions::ProhibitInterpolationOfLiterals]
add_themes = critic
allow_if_string_contains_single_quote = 1
[Perl::Critic::Policy::ValuesAndExpressions::ProhibitLeadingZeros]
add_themes = critic
[Perl::Critic::Policy::ValuesAndExpressions::ProhibitLongChainsOfMethodCalls]
add_themes = critic
max_chain_length = 3
[Perl::Critic::Policy::ValuesAndExpressions::ProhibitMagicNumbers]
# Not yet configured completely.
add_themes = critic
allowed_values = -1 0 1
[Perl::Critic::Policy::ValuesAndExpressions::ProhibitMixedBooleanOperators]
add_themes = critic
[Perl::Critic::Policy::ValuesAndExpressions::ProhibitQuotesAsQuotelikeOperatorDelimiters]
add_themes = critic
back_quote_allowed_operators =
double_quote_allowed_operators =
single_quote_allowed_operators =
[Perl::Critic::Policy::ValuesAndExpressions::ProhibitSpecialLiteralHeredocTerminator]
add_themes = critic
[Perl::Critic::Policy::ValuesAndExpressions::RequireConstantVersion]
add_themes = critic
allow_version_without_use_on_same_line = 1
[Perl::Critic::Policy::ValuesAndExpressions::RequireNumberSeparators]
add_themes = critic
min_value = 10000
[Perl::Critic::Policy::ValuesAndExpressions::RequireQuotedHeredocTerminator]
add_themes = critic
[Perl::Critic::Policy::ValuesAndExpressions::RequireUpperCaseHeredocTerminator]
add_themes = critic
[Perl::Critic::Policy::Variables::ProhibitConditionalDeclarations]
add_themes = critic
[Perl::Critic::Policy::Variables::ProhibitLocalVars]
add_themes = critic
[Perl::Critic::Policy::Variables::ProhibitMatchVars]
add_themes = critic
[Perl::Critic::Policy::Variables::ProhibitUnusedVariables]
add_themes = critic
[Perl::Critic::Policy::Variables::RequireInitializationForLocalVars]
add_themes = critic
[Perl::Critic::Policy::Variables::RequireLexicalLoopIterators]
add_themes = critic
[Perl::Critic::Policy::Variables::RequireLocalizedPunctuationVars]
add_themes = critic
allow =
[Perl::Critic::Policy::Variables::RequireNegativeIndices]
add_themes = critic

4
t/.proverc Normal file
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@ -0,0 +1,4 @@
--lib
--recurse
--shuffle
-I.

4
t/.proverc-cover Normal file
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@ -0,0 +1,4 @@
--lib
--recurse
--shuffle
-I.

14
t/Test/Expander/Boilerplate.pm Normal file
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package t::Test::Expander::Boilerplate;
use v5.14;
use warnings
FATAL => qw(all),
NONFATAL => qw(deprecated exec internal malloc newline once portable redefine recursion uninitialized);
sub new {
my ($class, @args) = @_;
return bless([\@args], $class);
}
1;

12
t/Test/Expander/NoCLASS/NoMETHOD.t Normal file
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#!/usr/bin/env perl
use v5.14;
use warnings
FATAL => qw(all),
NONFATAL => qw(deprecated exec internal malloc newline once portable redefine recursion uninitialized);
use Test::Expander;
is($CLASS, undef, 'there is no class corresponding to this test file');
done_testing();

28
t/Test/Expander/_error.t Normal file
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#!/usr/bin/env perl
## no critic (ProtectPrivateSubs RequireLocalizedPunctuationVars)
use v5.14;
use warnings
FATAL => qw(all),
NONFATAL => qw(deprecated exec internal malloc newline once portable redefine recursion uninitialized);
use Test::Expander::Constants qw($ERROR_WAS);
use constant TEST_CASES => {
'no exception' => { exception => '', args => [], output => '' },
'exception raised, no replacement required' => { exception => 'ABC', args => [], output => "${ERROR_WAS}ABC" },
'exception raised, replacement required' => { exception => 'ABC', args => [qw(B b)], output => "${ERROR_WAS}AbC" },
};
use Test::Builder::Tester tests => scalar(keys(%{TEST_CASES()}));
use Test::Expander;
foreach my $title (keys(%{TEST_CASES()})) {
test_out("ok 1 - $title");
$@ = TEST_CASES->{$title}->{exception};
is(
Test::Expander::_error(@{TEST_CASES->{$title}->{args}}),
TEST_CASES->{$title}->{output},
$title
);
test_test($title);
}

24
t/Test/Expander/_newTestMessage.t Normal file
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#!/usr/bin/env perl
## no critic (ProtectPrivateSubs RequireLocalizedPunctuationVars)
use v5.14;
use warnings
FATAL => qw(all),
NONFATAL => qw(deprecated exec internal malloc newline once portable redefine recursion uninitialized);
use Test::Expander::Constants qw($NEW_FAILED $NEW_SUCCEEDED);
use constant TEST_CASES => {
"'new' succeeded" => { exception => '', output => $NEW_SUCCEEDED },
"'new' failed" => { exception => 'ABC', output => $NEW_FAILED },
};
use Test::Builder::Tester tests => scalar(keys(%{TEST_CASES()}));
use Test::Expander;
foreach my $title (keys(%{TEST_CASES()})) {
test_out("ok 1 - $title");
$@ = TEST_CASES->{$title}->{exception};
my $expected = TEST_CASES->{$title}->{output} =~ s/%s/.*/gr;
like(Test::Expander::_newTestMessage('CLASS'), qr/$expected/, $title);
test_test($title);
}

99
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#!/usr/bin/env perl
## no critic (RequireLocalizedPunctuationVars)
use v5.14;
use warnings
FATAL => qw(all),
NONFATAL => qw(deprecated exec internal malloc newline once portable redefine recursion uninitialized);
use File::chdir;
use Test::Expander -tempdir => {}, -srand => time;
can_ok($CLASS, $METHOD);
ok(-d $TEMP_DIR, "temporary directory '$TEMP_DIR' created");
my $classPath = $CLASS =~ s{::}{/}gr;
my $testPath = path($TEMP_DIR)->child('t');
$testPath->child($classPath)->mkpath;
{
local $CWD = $testPath->parent->stringify; ## no critic (ProhibitLocalVars)
my $testFile = path('t')->child($classPath)->child($METHOD . '.t')->stringify;
my $envFile = path('t')->child($classPath)->child($METHOD . '.env');
is(Test2::Plugin::SRand->from, 'import arg', "random seed is supplied as 'time'");
subtest 'env variable filled from a variable' => sub {
our $var = 'abc';
my $name = 'ABC';
my $value = '$' . __PACKAGE__ . '::var';
$envFile->spew("$name = $value\nJust a comment line");
%ENV = (xxx => 'yyy');
ok(lives { $METHOD_REF->($METHOD, $CLASS, $testFile) }, 'successfully executed');
is(\%ENV, { $name => lc($name) }, "'%ENV' has the expected content");
};
subtest 'env variable filled by a self-implemented sub' => sub {
my $name = 'ABC';
my $value = __PACKAGE__ . "::testEnv(lc('$name'))";
$envFile->spew("$name = $value");
%ENV = (xxx => 'yyy');
ok(lives { $METHOD_REF->($METHOD, $CLASS, $testFile) }, 'successfully executed');
is(\%ENV, { $name => lc($name) }, "'%ENV' has the expected content");
};
subtest "env variable filled by a 'File::Temp::tempdir'" => sub {
my $name = 'ABC';
my $value = 'File::Temp::tempdir';
$envFile->spew("$name = $value");
%ENV = (xxx => 'yyy');
ok(lives { $METHOD_REF->($METHOD, $CLASS, $testFile) }, 'successfully executed');
is([ keys(%ENV) ], [ $name ], "'%ENV' has the expected keys");
ok(-d $ENV{$name}, 'temporary directory exists');
};
subtest 'env file does not exist' => sub {
$envFile->remove;
%ENV = (xxx => 'yyy');
ok(lives { $METHOD_REF->($METHOD, $CLASS, $testFile) }, 'successfully executed');
is(\%ENV, { xxx => 'yyy' }, "'%ENV' remained unchanged");
};
subtest 'directory structure does not correspond to class hierarchy' => sub {
$envFile->remove;
%ENV = (xxx => 'yyy');
ok(lives { $METHOD_REF->($METHOD, 'ABC::' . $CLASS, $testFile) }, 'successfully executed');
is(\%ENV, { xxx => 'yyy' }, "'%ENV' remained unchanged");
};
subtest 'env files exist on multiple levels' => sub {
path($envFile->parent . '.env')->spew("A = '1'\nB = '2'");
path($envFile->parent->parent . '.env')->spew("C = '0'");
$envFile->spew("C = '3'");
%ENV = (xxx => 'yyy');
local $CWD = $TEMP_DIR; ## no critic (ProhibitLocalVars)
ok(lives { $METHOD_REF->($METHOD, $CLASS, $testFile) }, 'successfully executed');
is(\%ENV, { A => '1', B => '2', C => '3' }, "'%ENV' has the expected content");
};
subtest 'env file invalid' => sub {
my $name = 'ABC';
my $value = 'abc->';
$envFile->spew("$name = $value");
like(dies { $METHOD_REF->($METHOD, $CLASS, $testFile) }, qr/syntax error/, 'expected exception raised');
};
}
done_testing();
sub testEnv { return $_[0] } ## no critic (RequireArgUnpacking)

22
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#!/usr/bin/env perl
## no critic (ProtectPrivateSubs)
use v5.14;
use warnings
FATAL => qw(all),
NONFATAL => qw(deprecated exec internal malloc newline once portable redefine recursion uninitialized);
use constant TEST_CASES => {
'module version required' => { input => [ '1.22.333' ], output => ' 1.22.333' },
'single import but not a module version' => { input => [ 'x' ], output => '' },
'multiple imports' => { input => [ qw(x y) ], output => '' },
};
use Test::Builder::Tester tests => scalar(keys(%{TEST_CASES()}));
use Test::Expander;
foreach my $title (keys(%{TEST_CASES()})) {
test_out("ok 1 - $title");
is(Test::Expander::_useImports(TEST_CASES->{$title}->{input}), TEST_CASES->{$title}->{output}, $title);
test_test($title);
}

16
t/Test/Expander/compare_ok.t Normal file
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#!/usr/bin/env perl
use v5.14;
use warnings
FATAL => qw(all),
NONFATAL => qw(deprecated exec internal malloc newline once portable redefine recursion uninitialized);
use Test::Builder::Tester tests => 1;
use Test::Expander;
my $dir = path(__FILE__)->parent->child($METHOD);
my $title = 'execution';
test_out("ok 1 - $title");
compare_ok($dir->child('got'), $dir->child('expected'), $title);
test_test($title);

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A
BC

2
t/Test/Expander/compare_ok/got Normal file
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@ -0,0 +1,2 @@
A
BC

15
t/Test/Expander/dies_ok.t Normal file
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#!/usr/bin/env perl
use v5.14;
use warnings
FATAL => qw(all),
NONFATAL => qw(deprecated exec internal malloc newline once portable redefine recursion uninitialized);
use Test::Builder::Tester tests => 1;
use Test::Expander;
my $title = 'execution';
test_out("ok 1 - $title");
dies_ok(sub { die() }, $title);
test_test($title);

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t/Test/Expander/import.t Normal file
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#!/usr/bin/env perl
use v5.14;
use warnings
FATAL => qw(all),
NONFATAL => qw(deprecated exec internal malloc newline once portable redefine recursion uninitialized);
my (@functions, @variables);
BEGIN {
use Const::Fast;
use File::Temp qw(tempdir tempfile);
use Path::Tiny qw(cwd path);
use Test::Output;
use Test::Warn;
use Test2::Tools::Explain;
use Test2::V0;
@functions = (
@{Const::Fast::EXPORT},
@{Test::Files::EXPORT},
@{Test::Output::EXPORT},
@{Test::Warn::EXPORT},
@{Test2::Tools::Explain::EXPORT},
@{Test2::V0::EXPORT},
qw(tempdir tempfile),
qw(cwd path),
qw(BAIL_OUT dies_ok is_deeply lives_ok new_ok require_ok use_ok),
);
@variables = qw($CLASS $METHOD $METHOD_REF $TEMP_DIR $TEMP_FILE);
}
use Scalar::Readonly qw(readonly_off);
use Test::Builder::Tester tests => @functions + @variables + 4;
use Test::Expander -target => 'Test::Expander',
-tempdir => { CLEANUP => 1 },
-tempfile => { UNLINK => 1 };
use Test::Expander::Constants qw($INVALID_VALUE $UNKNOWN_OPTION);
foreach my $function (sort @functions) {
my $title = "$CLASS->can('$function')";
test_out("ok 1 - $title");
can_ok($CLASS, $function);
test_test($title);
}
foreach my $variable (sort @variables) {
my $title = "$CLASS exports '$variable'";
test_out("ok 1 - $title");
ok(eval("defined($variable)"), $title); ## no critic (ProhibitStringyEval)
test_test($title);
}
my $title;
my $expected;
$title = "invalid option value of '-tempdir'";
$expected = $INVALID_VALUE =~ s/%s/.+/gr;
readonly_off($CLASS);
readonly_off($METHOD);
readonly_off($METHOD_REF);
readonly_off($TEMP_DIR);
readonly_off($TEMP_FILE);
test_out("ok 1 - $title");
like(dies { $CLASS->$METHOD(-tempdir => 1) }, qr/$expected/, $title);
test_test($title);
$title = "invalid option value of '-tempfile'";
$expected = $INVALID_VALUE =~ s/%s/.+/gr;
readonly_off($CLASS);
readonly_off($METHOD);
readonly_off($METHOD_REF);
readonly_off($TEMP_DIR);
readonly_off($TEMP_FILE);
test_out("ok 1 - $title");
like(dies { $CLASS->$METHOD(-tempfile => 1) }, qr/$expected/, $title);
test_test($title);
$title = 'unknown option with some value';
$expected = $UNKNOWN_OPTION =~ s/%s/.+/gr;
readonly_off($CLASS);
readonly_off($METHOD);
readonly_off($METHOD_REF);
readonly_off($TEMP_DIR);
readonly_off($TEMP_FILE);
test_out("ok 1 - $title");
like(dies { $CLASS->$METHOD(unknown => 1) }, qr/$expected/, $title);
test_test($title);
$title = 'unknown option without value';
$expected = $UNKNOWN_OPTION =~ s/%s/.+/r =~ s/%s//r;
readonly_off($CLASS);
readonly_off($METHOD);
readonly_off($METHOD_REF);
readonly_off($TEMP_DIR);
readonly_off($TEMP_FILE);
test_out("ok 1 - $title");
like(dies { $CLASS->$METHOD('unknown') }, qr/$expected/, $title);
test_test($title);

18
t/Test/Expander/is_deeply.t Normal file
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#!/usr/bin/env perl
use v5.14;
use warnings
FATAL => qw(all),
NONFATAL => qw(deprecated exec internal malloc newline once portable redefine recursion uninitialized);
use Clone qw(clone);
use Test::Builder::Tester tests => 1;
use Test::Expander;
my $title = 'execution';
test_out("ok 1 - $title");
my $got = bless({A => 0, B => [(0 .. 1)]}, 'some class');
my $expected = clone($got);
is_deeply($got, $expected, $title);
test_test($title);

15
t/Test/Expander/lives_ok.t Normal file
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#!/usr/bin/env perl
use v5.14;
use warnings
FATAL => qw(all),
NONFATAL => qw(deprecated exec internal malloc newline once portable redefine recursion uninitialized);
use Test::Builder::Tester tests => 1;
use Test::Expander;
my $title = 'execution';
test_out("ok 1 - $title");
lives_ok(sub {}, $title);
test_test($title);

24
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#!/usr/bin/env perl
use v5.14;
use warnings
FATAL => qw(all),
NONFATAL => qw(deprecated exec internal malloc newline once portable redefine recursion uninitialized);
use constant {
CLASS => 't::Test::Expander::Boilerplate',
TEST_CASES => {
'no args' => undef,
'args supplied' => [ 0 .. 1 ],
},
};
use Test::Builder::Tester tests => scalar(keys(%{TEST_CASES()}));
use Test::Expander;
use t::Test::Expander::Boilerplate;
foreach my $title (keys(%{TEST_CASES()})) {
test_out("ok 1 - An object of class '@{[CLASS]}' isa '@{[CLASS]}'");
new_ok(CLASS, TEST_CASES->{$title}, $title);
test_test($title);
}

17
t/Test/Expander/require_ok.t Normal file
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#!/usr/bin/env perl
use v5.14;
use warnings
FATAL => qw(all),
NONFATAL => qw(deprecated exec internal malloc newline once portable redefine recursion uninitialized);
use Test::Builder::Tester tests => 1;
use Test::Expander;
use constant CLASS => 't::Test::Expander::Boilerplate';
my $title = "require @{[CLASS]}";
test_out("ok 1 - $title;");
require_ok(CLASS);
test_test($title);

16
t/Test/Expander/throws_ok.t Normal file
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#!/usr/bin/env perl
use v5.14;
use warnings
FATAL => qw(all),
NONFATAL => qw(deprecated exec internal malloc newline once portable redefine recursion uninitialized);
use Test::Builder::Tester tests => 1;
use Test::Expander;
my $title = 'execution';
test_out("ok 1 - $title");
my $expected = 'DIE TEST';
throws_ok(sub { die($expected) }, $expected, $title);
test_test($title);

17
t/Test/Expander/use_ok.t Normal file
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#!/usr/bin/env perl
use v5.14;
use warnings
FATAL => qw(all),
NONFATAL => qw(deprecated exec internal malloc newline once portable redefine recursion uninitialized);
use Test::Builder::Tester tests => 1;
use Test::Expander;
use constant CLASS => 't::Test::Expander::Boilerplate';
my $title = "use @{[CLASS]}";
test_out("ok 1 - $title;");
use_ok(CLASS);
test_test($title);