Provided by: kyua_0.13+git20190402+a685f911237e-1_amd64 
NAME
Kyuafile — Test suite description files
SYNOPSIS
atf_test_program(string name, [string metadata]);
current_kyuafile();
fs.basename(string path);
fs.dirname(string path);
fs.exists(string path);
fs.files(string path);
fs.is_absolute(string path);
fs.join(string path, string path);
include(string path);
plain_test_program(string name, [string metadata]);
syntax(int version);
tap_test_program(string name, [string metadata]);
test_suite(string name);
DESCRIPTION
A test suite is a collection of test programs and is represented by a hierarchical layout of
test binaries on the file system. Any subtree of the file system can represent a test
suite, provided that it includes one or more Kyuafiles, which are the test suite definition
files.
A Kyuafile is a Lua script whose purpose is to describe the structure of the test suite it
belongs to. To do so, the script has access to a collection of special functions provided
by kyua(1) as described in Helper functions.
File versioning
Every Kyuafile file starts with a call to syntax(int version). This call determines the
specific schema used by the file so that future backwards-incompatible modifications to the
file can be introduced.
Any new Kyuafile file should set version to ‘2’.
Test suite definition
If the Kyuafile registers any test programs, the Kyuafile must define the name of the test
suite the test programs belong to by using the test_suite() function at the very beginning
of the file.
The test suite name provided in the test_suite() call tells kyua(1) which set of
configuration variables from kyua.conf(5) to pass to the test programs at run time.
Test program registration
A Kyuafile can register test programs by means of a variety of *_test_program() functions,
all of which take the name of a test program and a set of optional metadata properties that
describe such test program.
The test programs to be registered must live in the current directory; in other words, the
various *_test_program() calls cannot reference test programs in other directories. The
rationale for this is to force all Kyuafile files to be self-contained, and to simplify
their internal representation.
ATF test programs are those that use the atf(7) libraries. They can be registered with the
atf_test_program() table constructor. This function takes the name of the test program and
a collection of optional metadata settings for all the test cases in the test program. Any
metadata properties defined by the test cases themselves override the metadata values
defined here.
Plain test programs are those that return 0 on success and non-0 on failure; in general,
most test programs (even those that use fancy unit-testing libraries) behave this way and
thus also qualify as plain test programs. They can be registered with the
plain_test_program() table constructor. This function takes the name of the test program,
an optional test_suite name that overrides the global test suite name, and a collection of
optional metadata settings for the test program.
TAP test programs are those that implement the Test Anything Protocol. They can be
registered with the tap_test_program() table constructor. This function takes the name of
the test program and a collection of optional metadata settings for the test program.
The following metadata properties can be passed to any test program definition:
allowed_architectures
Whitespace-separated list of machine architecture names allowed by the test. If
empty or not defined, the test is allowed to run on any machine architecture.
allowed_platforms
Whitespace-separated list of machine platform names allowed by the test. If empty
or not defined, the test is allowed to run on any machine platform.
custom.NAME
Custom variable defined by the test where ‘NAME’ denotes the name of the variable.
These variables are useful to tag your tests with information specific to your
project. The values of such variables are propagated all the way from the tests
to the results files and later to any generated reports.
Note that if the name happens to have dashes or any other special characters in
it, you will have to use a special Lua syntax to define the property. Refer to
the EXAMPLES section below for clarification.
description
Textual description of the test.
is_exclusive
If true, indicates that this test program cannot be executed along any other
programs at the same time. Test programs that affect global system state, such as
those that modify the value of a sysctl(8) setting, must set themselves as
exclusive to prevent failures due to race conditions. Defaults to false.
required_configs
Whitespace-separated list of configuration variables that the test requires to be
defined before it can run.
required_disk_space
Amount of available disk space that the test needs to run successfully.
required_files
Whitespace-separated list of paths that the test requires to exist before it can
run.
required_memory
Amount of physical memory that the test needs to run successfully.
required_programs
Whitespace-separated list of basenames or absolute paths pointing to executable
binaries that the test requires to exist before it can run.
required_user
If empty, the test has no restrictions on the calling user for it to run. If set
to ‘unprivileged’, the test needs to not run as root. If set to ‘root’, the test
must run as root.
timeout
Amount of seconds that the test is allowed to execute before being killed.
Recursion
To reference test programs in another subdirectory, a different Kyuafile must be created in
that directory and it must be included into the original Kyuafile by means of the include()
function.
include() may only be called with a relative path and with at most one directory component.
This is by design: Kyua uses the file system structure as the layout of the test suite
definition. Therefore, each subdirectory in a test suite must include its own Kyuafile and
each Kyuafile can only descend into the Kyuafiles of immediate subdirectories.
If you need to source a Kyuafile located in disjoint parts of your file system namespace,
you will have to create a ‘shadow tree’ using symbolic links and possibly helper Kyuafiles
to plug the various subdirectories together. See the EXAMPLES section below for details.
Note that each file is processed in its own Lua environment: there is no mechanism to pass
state from one file to the other. The reason for this is that there is no such thing as a
“top-level” Kyuafile in a test suite: the user has to be able to run the test suite from any
directory in a given hierarchy, and this execution must not depend on files that live in
parent directories.
Top-level Kyuafile
Every system has a top directory into which test suites get installed. The default is
/usr/tests. Within this directory live test suites, each of which is in an independent
subdirectory. Each subdirectory can be provided separately by independent third-party
packages.
Kyua allows running all the installed test suites at once in order to provide comprehensive
cross-component reports. In order to do this, there is a special file in the top directory
that knows how to inspect the subdirectories in search for other Kyuafiles and include them.
The FILES section includes more details on where this file lives.
Helper functions
The ‘base’, ‘string’, and ‘table’ Lua modules are fully available in the context of a
Kyuafile.
The following extra functions are provided by Kyua:
string current_kyuafile()
Returns the absolute path to the current Kyuafile.
string fs.basename(string path)
Returns the last component of the given path.
string fs.dirname(string path)
Returns the given path without its last component or a dot if the path has a
single component.
bool fs.exists(string path)
Checks if the given path exists. If the path is not absolute, it is relative to
the directory containing the Kyuafile in which the call to this function occurs.
iterator fs.files(string path)
Opens a directory for scanning of its entries. The returned iterator yields an
entry on each call, and the entry is simply the filename. If the path is not
absolute, it is relative to the directory containing the Kyuafile in which the
call to this function occurs.
is_absolute fs.is_absolute(string path)
Returns true if the given path is absolute; false otherwise.
join fs.join(string path, string path)
Concatenates the two paths. The second path cannot be absolute.
FILES
/usr/tests/Kyuafile.
Top-level Kyuafile for the current system.
/usr/share/kyua/examples/Kyuafile.top.
Sample file to serve as a top-level Kyuafile.
EXAMPLES
The following Kyuafile is the simplest you can define. It provides a test suite definition
and registers a couple of different test programs using different interfaces:
syntax(2)
test_suite('first')
atf_test_program{name='integration_test'}
plain_test_program{name='legacy_test'}
The following example is a bit more elaborate. It introduces some metadata properties to
the test program definitions and recurses into a couple of subdirectories:
syntax(2)
test_suite('second')
plain_test_program{name='legacy_test',
allowed_architectures='amd64 i386',
required_files='/bin/ls',
timeout=30}
tap_test_program{name='privileged_test',
required_user='root'}
include('module-1/Kyuafile')
include('module-2/Kyuafile')
The syntax to define custom properties may be not obvious if their names have any characters
that make the property name not be a valid Lua identifier. Dashes are just one example. To
set such properties, do something like this:
syntax(2)
test_suite('FreeBSD')
plain_test_program{name='the_test',
['custom.FreeBSD-Bug-Id']='category/12345'}
Connecting disjoint test suites
Now suppose you had various test suites on your file system and you would like to connect
them together so that they could be executed and treated as a single unit. The test suites
we would like to connect live under /usr/tests, /usr/local/tests and ~/local/tests.
We cannot create a Kyuafile that references these because the include() directive does not
support absolute paths. Instead, what we can do is create a shadow tree using symbolic
links:
$ mkdir ~/everything
$ ln -s /usr/tests ~/everything/system-tests
$ ln -s /usr/local/tests ~/everything/local-tests
$ ln -s ~/local/tests ~/everything/home-tests
And then we create an ~/everything/Kyuafile file to drive the execution of the integrated
test suite:
syntax(2)
test_suite('test-all-the-things')
include('system-tests/Kyuafile')
include('local-tests/Kyuafile')
include('home-tests/Kyuafile')
Or, simply, you could reuse the sample top-level Kyuafile to avoid having to manually craft
the list of directories into which to recurse:
$ cp /usr/share/kyua/examples/Kyuafile.top ~/everything/Kyuafile
SEE ALSO
kyua(1)