Changes between Initial Version and Version 1 of Testsuite

Timestamp:

Apr 23, 2011, 9:26:15 PM (13 years ago)

Author:

becoulet

Comment:

exp testsuite usage doc added

Testsuite

@@ +1 @@
+
+= Required tools =
+
+Running the MutekH testsuite have the following requirements:
+
+ - A compiler toolchain,
+ - A python 2 interpreter, available in most GNU/Linux and BSD operating systems,
+ - Some target platform simulators,
+ - The `testwrap` tool, a modified version of GNU coreutils timeout command,
+ - Mercurial to clone the testsuite repository.
+
+Depending on the target you wish to run the testsuite on, you may not need to install all of these tools.
+
+The [[Install]] page explains how to install these requirements.
+
+= Usage =
+
+== Getting the test suite ==
+
+Once the required tools are installed and the MutekH source code is fetched, you need to get the testsuite:
+
+{{{
+cd .../mutekh
+hg clone https://www.mutekh.org/hg/tests
+}}}
+
+The python module path must point to the [source:tests/lib/python] directory:
+
+{{{
+export PYTHONPATH=tests/lib/python/
+}}}
+
+== Test makefile generation ==
+
+Some tests applications are located in [source:tests/pool].
+The [source:tests/bin/mtest] tool is designed generate a
+makefile which runs a set of tests:
+
+ - It first reads tests descriptions from all directories passed on the command line,
+ - then detects which backend tools are available on your system,
+ - and finally generates a makefile ready to run the tests.
+
+Each test application will be used to generate many test targets in the makefile by
+exploration of associated configurations space.
+
+{{{
+$ tests/bin/mtest tests/pool/hello
+Test: hello
+  Total tests count:     42
+  Available tests count: 42
+Writing 'tests.mk' makefile.
+}}}
+
+The generated makefile can then be used to start the previously selected tests:
+
+{{{
+make -f tests.mk
+}}}
+
+This will generate kernel binaries, log files and other files, all with the '`TEST`' prefix.
+Each passed test target generates a stamp file which must be deleted to start the test again.
+
+= Test infrastructure =
+
+The testsuite repository contains the following directories:
+
+ - `pool/` : Tests source code and description,
+ - `bin/` : Test generation and execution tools,
+ - `lib/` : python testsuite modules,
+ - `doc/` : python code documentation,
+ - `tools/` : additional tools source code.
+
+The [source:tests/pool] directory contains a sub-directory for each test application.
+Other user test applications may reside elsewhere but a test application must always
+be packaged in its own directory.
+
+== Test application details ==
+
+This part requires good knowledge of the BuildSystem usage.
+
+A test is always packaged in a directory. It's a regular MutekH application module
+with an additional test description file. It is composed of:
+
+ - Some '.c' source files of the test application,
+ - An associated '`Makefile`' file,
+ - A '`config`' file. This file contain configuration sections as described in BuildSystem#Advancedsyntax,
+ - A '`test`' description file. This python file contains the test description.
+
+The '`test`' description file contains details about how to build and run the test application:
+
+ - It specifies configuration sections which may be passed to the build system when building the test application.
+ - It associates backend names to some of the configuration sections to allow selection of the right execution platform.
+ - It specifies configuration space to explore for the test.
+ - It specifies ordered test actions (configuration, build, execute, ...).
+ - It specifies expected results.
+
+The test will be built and executed for each possible configuration in the configuration test space.
+
+=== Example test files ===
+
+Parts of the test files are detailed here as an example.
+Refer to [source:tests/pool/hello/] for full content.
+
+==== Configuration sections ====
+
+The test description file is a python script which relies on python modules found
+in the [source:tests/lib/python] directory.
+
+An instance of the `Config` class is used to identify a valid configuration
+section which can be passed in the BUILD variable of the build command line.
+Such an instance must exist for each configuration section available in the '`config`' file
+which is triggered during exploration of the configuration space.
+
+For instance, if the '`config`' file contains the following lines:
+{{{
+%section test_ipi
+  CONFIG_HEXO_IPI defined
+%else
+  CONFIG_HEXO_IPI undefined
+}}}
+the following line in the '`test`' file allows triggering of the inter-processor
+interrupts (IPI) feature in the test configuration space:
+{{{
+# test configuration           BUILD sections
+
+ipi                  = Config("test_ipi")
+}}}
+
+Target architecture configuration sections need to be associated with one or more backends
+to enable the test generation tool to chose the right execution platform (eg simulator).
+Test will be run on available backends and unavailable backends will be skipped.
+
+{{{
+# test configuration           BUILD sections                           test backends
+
+soclib_mips32el      = Config("soclib-mips32el:pf-tutorial",           "soclib_mips32el")
+soclib_mips32el_smp4 = Config("soclib-mips32el:pf-tutorial:test_smp4", "soclib_mips32el_smp4")
+ibmpc_x86            = Config("ibmpc-x86",                             "qemu_x86", "bochs_x86")
+}}}
+
+==== Test description ====
+
+Once all `Config` instances have been created, an instance of the `Environment` class must
+be created which describes the test. This instance have several properties:
+
+ - `name`: The test unique name,
+ - `test_space` : A list of configuration dimensions describing the test configuration space.
+ - `actions` : A list of actions to perform for this test.
+ - `success_grep`: A grep expression to search for in the execution output for the test to pass,
+ - `timeout`: simulation timeout delay,
+
+The `test_space` property is a list of `Dimension` and `Exclude` instances used to finely describe
+the configuration space based on previously declared `Config` objects.
+
+The following example shows how to defines a two dimensional space with the first dimension being the target
+architecture and the second dimension triggering the IPI feature. An additional `Exclude` rule
+excludes configurations where inter-processors interrupts would be used in single processor platforms.
+
+{{{
+    test_space = [
+        Dimension(soclib_mips32eb, soclib_mips32eb_smp4, ibmpc_x86),
+        Dimension(ipi, None),
+        Exclude(ipi & ~soclib_mips32eb_smp4)
+        ],
+}}}