Config::Model::Tester - Test framework for Config::Model
version 2.048
# in t/model_test.t use warnings; use strict; use Config::Model::Tester ; use ExtUtils::testlib; my $arg = shift || ''; my $test_only_model = shift || ''; my $do = shift ; run_tests($arg, $test_only_model, $do) ;
This class provides a way to test configuration models with tests files. This class was designed to tests several models and several tests cases per model.
A specific layout for test files must be followed
t |-- model_test.t \-- model_tests.d |-- lcdd-test-conf.pl # test specification \-- lcdd-examples |-- t0 # test case t0 \-- LCDD-0.5.5 # test case for older LCDproc
In the example above, we have 1 model to test: lcdd and 2 tests cases.
lcdd
Test specification is written in lcdd-test-conf.pl file. Test cases are plain files in lcdd-examples. lcdd-test-conf.pl will contain instructions so that each file will be used as a /etc/LCDd.conf file during each test case.
lcdd-test-conf.pl
lcdd-examples
/etc/LCDd.conf
lcdd-test-conf.pl can contain specifications for more test case. Each test case will require a new file in lcdd-examples directory.
See "Examples" for a link to the actual LCDproc model tests
When a configuration is spread over several files, test examples must be provided in sub-directories:
t/model_tests.d \-- dpkg-test-conf.pl # test specification \-- dpkg-examples \-- libversion # example subdir \-- debian # directory for one test case |-- changelog |-- compat |-- control |-- copyright |-- rules |-- source | \-- format \-- watch
In the example above, the test specification is written in dpkg-test-conf.pl. Dpkg layout requires several files per test case. dpkg-test-conf.pl will contain instruction so that each directory under dpkg-examples will be used.
dpkg-test-conf.pl
dpkg-examples
See "Examples" for a link to the (many) Dpkg model tests
t/model_tests.d/ |-- ssh-test-conf.pl |-- ssh-examples \-- basic |-- system_ssh_config \-- user_ssh_config
In this example, the layout of the configuration files depend on the system. For instance, system wide ssh_config is stored in /etc/ssh on Linux, and directly in /etc on MacOS.
ssh_config
/etc/ssh
/etc
ssh-test-conf.pl will specify the target path of each file. I.e.:
$home_for_test = $^O eq 'darwin' ? '/Users/joe' : '/home/joe' ; # ... setup => { 'system_ssh_config' => { 'darwin' => '/etc/ssh_config', 'default' => '/etc/ssh/ssh_config', }, 'user_ssh_config' => "$home_for_test/.ssh/config"
See the actual Ssh and Sshd model tests
Each model test is specified in <model>-test-conf.pl. This file contains a set of global variable. (yes, global variables are often bad ideas in programs, but they are handy for tests):
<model>-test-conf.pl
# config file name (used to copy test case into test wr_root directory) $conf_file_name = "fstab" ; # config dir where to copy the file #$conf_dir = "etc" ; # home directory for this test $home_for_test = '/home/joe' ;
Here, t0 file will be copied in wr_root/test-t0/etc/fstab.
t0
wr_root/test-t0/etc/fstab
# config model name to test $model_to_test = "Fstab" ; # list of tests @tests = ( { # test name name => 't0', # add optional specification here for t0 test }, { name => 't1', # add optional specification here for t1 test }, ); 1; # to keep Perl happy
See actual fstab test.
Some tests will require the creation of a configuration class dedicated for test. This test class can be created directly in the test specification by calling create_config_class on $model variable. See for instance the layer test or the test for shellvar backend.
$model
In some models (e.g. Multistrap, the config file is chosen by the user. In this case, the file name must be specified for each tests case:
Multistrap
$model_to_test = "Multistrap"; @tests = ( { name => 'arm', config_file => '/home/foo/my_arm.conf', check => {}, }, );
See actual multistrap test.
Each subtest follow a sequence explained below. Each step of this sequence may be altered by adding specification in the test case:
Setup test in wr_root/<subtest name>/. If your configuration file layout depend on the target system, you will have to specify the path using setup parameter:
wr_root/<subtest name>/
setup
setup => { 'file_name_in_examples_dir' => { 'darwin' => '/etc/foo', # macosx 'default' => '/etc/bar' # others }, 'another_file_in_examples_dir' => $computed_path }
Create configuration instance, load config data and check its validity. Use load_check => 'no' if your file is not valid.
load_check => 'no'
Check for config data warning. You should pass the list of expected warnings. E.g.
load_warnings => [ qr/Missing/, (qr/deprecated/) x 3 , ],
Use an empty array_ref to masks load warnings.
Optionally load configuration data. You should design this config data to suppress any error or warning mentioned above. E.g:
load => 'binary:seaview Synopsis="multiplatform interface for sequence alignment"',
Optionally, call apply_fixes:
apply_fix => 1,
Call dump_tree to check the validity of the data. Use dump_errors if you expect issues:
dump_errors
dump_errors => [ # the issues the fix that will be applied qr/mandatory/ => 'Files:"*" Copyright:0="(c) foobar"', qr/mandatory/ => ' License:FOO text="foo bar" ! Files:"*" License short_name="FOO" ' ],
Likewise, specify any expected warnings (note the list must contain only qr stuff):
qr
dump_warnings => [ (qr/deprecated/) x 3 ],
You can tolerate any dump warning this way:
dump_warnings => undef ,
Run specific content check to verify that configuration data was retrieved correctly:
check => [ 'fs:/proc fs_spec', "proc" , 'fs:/proc fs_file', "/proc" , 'fs:/home fs_file', "/home", ],
You can run check using different check modes (See "fetch( ... )" in Config::Model::Value) by passing a hash ref instead of a scalar :
check => [ 'sections:debian packages:0' , { qw/mode layered value dpkg-dev/}, 'sections:base packages:0', { qw/mode layered value gcc-4.2-base/}, ],
The whole hash content (except "value") is passed to grab and fetch
Verify annotation extracted from the configuration file comments:
verify_annotation => { 'source Build-Depends' => "do NOT add libgtk2-perl to build-deps (see bug #554704)", 'source Maintainer' => "what a fine\nteam this one is", },
Write back the config data in wr_root/<subtest name>/. Note that write back is forced, so the tested configuration files are written back even if the configuration values were not changed during the test.
You can skip warning when writing back with:
no_warnings => 1,
Check the content of the written files(s) with Test::File::Contents. Tests can be grouped in an array ref:
file_contents => { "/home/foo/my_arm.conf" => "really big string" , "/home/bar/my_arm.conf" => [ "really big string" , "another"], , } file_contents_like => { "/home/foo/my_arm.conf" => [ qr/should be there/, qr/as well/ ] , } file_contents_unlike => { "/home/foo/my_arm.conf" => qr/should NOT be there/ , }
Check added or removed configuration files. If you expect changes, specify a subref to alter the file list:
file_check_sub => sub { my $list_ref = shift ; # file added during tests push @$list_ref, "/debian/source/format" ; };
Copy all config data from wr_root/<subtest name>/ to wr_root/<subtest name>-w/. This steps is necessary to check that configuration written back has the same content as the original configuration.
wr_root/<subtest name>-w/
Create another configuration instance to read the conf file that was just copied (configuration data is checked.)
You can skip the load check if the written file still contain errors (e.g. some errors were ignored and cannot be fixed) with load_check2 => 'no'
load_check2 => 'no'
Compare data read from original data.
Run specific content check on the written config file to verify that configuration data was written and retrieved correctly:
wr_check => { 'fs:/proc fs_spec', "proc" , 'fs:/proc fs_file', "/proc" , 'fs:/home fs_file', "/home", },
Like the check item explained above, you can run wr_check using different check modes.
check
wr_check
Run all tests:
prove -l t/model_test.t
By default, all tests are run on all models.
You can pass arguments to t/model_test.t:
t/model_test.t
a bunch of letters. 't' to get test traces. 'e' to get stack trace in case of errors, 'l' to have logs. All other letters are ignored. E.g.
# run with log and error traces prove -lv t/model_test.t :: el
The model name to tests. E.g.:
# run only fstab tests prove -lv t/model_test.t :: x fstab
The required subtest E.g.:
# run only fstab tests t0 prove -lv t/model_test.t :: x fstab t0
LCDproc has a single configuration file: /etc/LCDd.conf. Here's LCDproc test layout and the test specification
Dpkg packages are constructed from several files. These files are handled like configuration files by Config::Model::Dpkg. The test layout features test with multiple file in dpkg-examples. The test is specified in dpkg-test-conf.pl
multistrap-test-conf.pl and multistrap-examples specify a test where the configuration file name is not imposed by the application. The file name must then be set in the test specification.
backend-shellvar-test-conf.pl is a more complex example showing how to test a backend. The test is done creating a dummy model within the test specification.
Config::Model
Test::More
Dominique Dumont
This software is Copyright (c) 2014 by Dominique Dumont.
This is free software, licensed under:
The GNU Lesser General Public License, Version 2.1, February 1999
The following websites have more information about this module, and may be of help to you. As always, in addition to those websites please use your favorite search engine to discover more resources.
MetaCPAN
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http://metacpan.org/release/Config-Model-Tester
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http://search.cpan.org/dist/Config-Model-Tester
RT: CPAN's Bug Tracker
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http://rt.cpan.org/NoAuth/Bugs.html?Dist=Config-Model-Tester
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http://annocpan.org/dist/Config-Model-Tester
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http://cpanratings.perl.org/d/Config-Model-Tester
CPAN Forum
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http://cpanforum.com/dist/Config-Model-Tester
CPANTS
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http://cpants.perl.org/dist/overview/Config-Model-Tester
CPAN Testers
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http://www.cpantesters.org/distro/C/Config-Model-Tester
CPAN Testers Matrix
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http://matrix.cpantesters.org/?dist=Config-Model-Tester
CPAN Testers Dependencies
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http://deps.cpantesters.org/?module=Config::Model::Tester
Please report any bugs or feature requests by email to bug-config-model-tester at rt.cpan.org, or through the web interface at http://rt.cpan.org/NoAuth/ReportBug.html?Queue=Config-Model-Tester. You will be automatically notified of any progress on the request by the system.
bug-config-model-tester at rt.cpan.org
The code is open to the world, and available for you to hack on. Please feel free to browse it and play with it, or whatever. If you want to contribute patches, please send me a diff or prod me to pull from your repository :)
http://github.com/dod38fr/config-model-tester.git
git clone git://github.com/dod38fr/config-model-tester.git
To install Config::Model::Tester, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Config::Model::Tester
CPAN shell
perl -MCPAN -e shell install Config::Model::Tester
For more information on module installation, please visit the detailed CPAN module installation guide.