This tool aims to test U-Boot by executing U-Boot shell commands using the console interface. A single top-level script exists to execute or attach to the U-Boot console, run the entire script of tests against it, and summarize the results. Advantages of this approach are:

- Testing is performed in the same way a user or script would interact with U-Boot; there can be no disconnect. - There is no need to write or embed test-related code into U-Boot itself. It is asserted that writing test-related code in Python is simpler and more flexible that writing it all in C. - It is reasonably simple to interact with U-Boot in this way.

A few simple tests are provided as examples. Soon, we should convert as many as possible of the other tests in test/* and test/cmd_ut.c too.

The hook scripts, relay control utilities, and udev rules I use for my own HW setup are published at https://github.com/swarren/uboot-test-hooks.

See README.md for more details!

Signed-off-by: Stephen Warren swarren@wwwdotorg.org Signed-off-by: Stephen Warren swarren@nvidia.com Tested-by: Michal Simek michal.simek@xilinx.com Tested-by: Simon Glass sjg@chromium.org --- v3: - Rework HTML log generation so that TAB characters render as expected. Suggested by Michal Simek. - Move test scripts into a sub-directory. Suggested by Michal Simek. - s/uboot/u[-_]boot/g. Suggested by Simon Glass. - s/"/'/g. Suggested by Simon Glass. - Typo fixes. - Add more documentation. Suggested by Simon Glass. - Make "notes" in the log file be <pre> so that their formatting is preserved. This is useful for large notes such as exception dumps.

v2: - Many fixes and tweaks have been squashed in. Separated out some of the tests into separate commits, and added some more tests. --- test/py/.gitignore | 1 + test/py/README.md | 300 ++++++++++++++++++++++++++++++ test/py/conftest.py | 335 ++++++++++++++++++++++++++++++++++ test/py/multiplexed_log.css | 88 +++++++++ test/py/multiplexed_log.py | 335 ++++++++++++++++++++++++++++++++++ test/py/pytest.ini | 11 ++ test/py/test.py | 32 ++++ test/py/tests/test_000_version.py | 20 ++ test/py/tests/test_help.py | 9 + test/py/tests/test_unknown_cmd.py | 14 ++ test/py/u_boot_console_base.py | 260 ++++++++++++++++++++++++++ test/py/u_boot_console_exec_attach.py | 51 ++++++ test/py/u_boot_console_sandbox.py | 48 +++++ test/py/u_boot_spawn.py | 123 +++++++++++++ 14 files changed, 1627 insertions(+) create mode 100644 test/py/.gitignore create mode 100644 test/py/README.md create mode 100644 test/py/conftest.py create mode 100644 test/py/multiplexed_log.css create mode 100644 test/py/multiplexed_log.py create mode 100644 test/py/pytest.ini create mode 100755 test/py/test.py create mode 100644 test/py/tests/test_000_version.py create mode 100644 test/py/tests/test_help.py create mode 100644 test/py/tests/test_unknown_cmd.py create mode 100644 test/py/u_boot_console_base.py create mode 100644 test/py/u_boot_console_exec_attach.py create mode 100644 test/py/u_boot_console_sandbox.py create mode 100644 test/py/u_boot_spawn.py

diff --git a/test/py/.gitignore b/test/py/.gitignore new file mode 100644 index 000000000000..0d20b6487c61 --- /dev/null +++ b/test/py/.gitignore @@ -0,0 +1 @@ +*.pyc diff --git a/test/py/README.md b/test/py/README.md new file mode 100644 index 000000000000..7c9bb4f04c24 --- /dev/null +++ b/test/py/README.md @@ -0,0 +1,300 @@ +# U-Boot pytest suite + +## Introduction + +This tool aims to test U-Boot by executing U-Boot shell commands using the +console interface. A single top-level script exists to execute or attach to the +U-Boot console, run the entire script of tests against it, and summarize the +results. Advantages of this approach are: + +- Testing is performed in the same way a user or script would interact with + U-Boot; there can be no disconnect. +- There is no need to write or embed test-related code into U-Boot itself. + It is asserted that writing test-related code in Python is simpler and more + flexible that writing it all in C. +- It is reasonably simple to interact with U-Boot in this way. + +## Requirements + +The test suite is implemented using pytest. Interaction with the U-Boot console +involves executing some binary and interacting with its stdin/stdout. You will +need to implement various "hook" scripts that are called by the test suite at +the appropriate time. + +On Debian or Debian-like distributions, the following packages are required. +Similar package names should exist in other distributions. + +| Package | Version tested (Ubuntu 14.04) | +| -------------- | ----------------------------- | +| python | 2.7.5-5ubuntu3 | +| python-pytest | 2.5.1-1 | + +The test script supports either: + +- Executing a sandbox port of U-Boot on the local machine as a sub-process, + and interacting with it over stdin/stdout. +- Executing an external "hook" scripts to flash a U-Boot binary onto a + physical board, attach to the board's console stream, and reset the board. + Further details are described later. + +### Using `virtualenv` to provide requirements + +Older distributions (e.g. Ubuntu 10.04) may not provide all the required +packages, or may provide versions that are too old to run the test suite. One +can use the Python `virtualenv` script to locally install more up-to-date +versions of the required packages without interfering with the OS installation. +For example: + +```bash +$ cd /path/to/u-boot +$ sudo apt-get install python python-virtualenv +$ virtualenv venv +$ . ./venv/bin/activate +$ pip install pytest +``` + +## Testing sandbox + +To run the testsuite on the sandbox port (U-Boot built as a native user-space +application), simply execute: + +``` +./test/py/test.py --bd sandbox --build +``` + +The `--bd` option tells the test suite which board type is being tested. This +lets the test suite know which features the board has, and hence exactly what +can be tested. + +The `--build` option tells U-Boot to compile U-Boot. Alternatively, you may +omit this option and build U-Boot yourself, in whatever way you choose, before +running the test script. + +The test script will attach to U-Boot, execute all valid tests for the board, +then print a summary of the test process. A complete log of the test session +will be written to `${build_dir}/test-log.html`. This is best viewed in a web +browser, but may be read directly as plain text, perhaps with the aid of the +`html2text` utility. + +## Command-line options + +- `--board-type`, `--bd`, `-B` set the type of the board to be tested. For + example, `sandbox` or `seaboard`. +- `--board-identity`, `--id` set the identity of the board to be tested. + This allows differentiation between multiple instances of the same type of + physical board that are attached to the same host machine. This parameter is + not interpreted by the test script in any way, but rather is simply passed + to the hook scripts described below, and may be used in any site-specific + way deemed necessary. +- `--build` indicates that the test script should compile U-Boot itself + before running the tests. If using this option, make sure that any + environment variables required by the build process are already set, such as + `$CROSS_COMPILE`. +- `--build-dir` sets the directory containing the compiled U-Boot binaries. + If omitted, this is `${source_dir}/build-${board_type}`. +- `--result-dir` sets the directory to write results, such as log files, + into. If omitted, the build directory is used. +- `--persistent-data-dir` sets the directory used to store persistent test + data. This is test data that may be re-used across test runs, such as file- + system images. + +`pytest` also implements a number of its own command-line options. Please see +`pytest` documentation for complete details. Execute `py.test --version` for +a brief summary. Note that U-Boot's test.py script passes all command-line +arguments directly to `pytest` for processing. + +## Testing real hardware + +The tools and techniques used to interact with real hardware will vary +radically between different host and target systems, and the whims of the user. +For this reason, the test suite does not attempt to directly interact with real +hardware in any way. Rather, it executes a standardized set of "hook" scripts +via `$PATH`. These scripts implement certain actions on behalf of the test +suite. This keeps the test suite simple and isolated from system variances +unrelated to U-Boot features. + +### Hook scripts + +#### Environment variables + +The following environment variables are set when running hook scripts: + +- `UBOOT_BOARD_TYPE` the board type being tested. +- `UBOOT_BOARD_IDENTITY` the board identity being tested, or `na` if none was + specified. +- `UBOOT_SOURCE_DIR` the U-Boot source directory. +- `UBOOT_TEST_PY_DIR` the full path to `test/py/` in the source directory. +- `UBOOT_BUILD_DIR` the U-Boot build directory. +- `UBOOT_RESULT_DIR` the test result directory. +- `UBOOT_PERSISTENT_DATA_DIR` the test peristent data directory. + +#### `u-boot-test-console` + +This script provides access to the U-Boot console. The script's stdin/stdout +should be connected to the board's console. This process should continue to run +indefinitely, until killed. The test suite will run this script in parallel +with all other hooks. + +This script may be implemented e.g. by exec()ing `cu`, `conmux`, etc. + +If you are able to run U-Boot under a hardware simulator such as qemu, then +you would likely spawn that simulator from this script. However, note that +`u-boot-test-reset` may be called multiple times per test script run, and must +cause U-Boot to start execution from scratch each time. Hopefully your +simulator includes a virtual reset button! If not, you can launch the +simulator from `u-boot-test-reset` instead, while arranging for this console +process to always communicate with the current simulator instance. + +#### `u-boot-test-flash` + +Prior to running the test suite against a board, some arrangement must be made +so that the board executes the particular U-Boot binary to be tested. Often, +this involves writing the U-Boot binary to the board's flash ROM. The test +suite calls this hook script for that purpose. + +This script should perform the entire flashing process synchronously; the +script should only exit once flashing is complete, and a board reset will +cause the newly flashed U-Boot binary to be executed. + +It is conceivable that this script will do nothing. This might be useful in +the following cases: + +- Some other process has already written the desired U-Boot binary into the + board's flash prior to running the test suite. +- The board allows U-Boot to be downloaded directly into RAM, and executed + from there. Use of this feature will reduce wear on the board's flash, so + may be preferable if available, and if cold boot testing of U-Boot is not + required. If this feature is used, the `u-boot-test-reset` script should + peform this download, since the board could conceivably be reset multiple + times in a single test run. + +It is up to the user to determine if those situations exist, and to code this +hook script appropriately. + +This script will typically be implemented by calling out to some SoC- or +board-specific vendor flashing utility. + +#### `u-boot-test-reset` + +Whenever the test suite needs to reset the target board, this script is +executed. This is guaranteed to happen at least once, prior to executing the +first test function. If any test fails, the test infra-structure will execute +this script again to restore U-Boot to an operational state before running the +next test function. + +This script will likely be implemented by communicating with some form of +relay or electronic switch attached to the board's reset signal. + +The semantics of this script require that when it is executed, U-Boot will +start running from scratch. If the U-Boot binary to be tested has been written +to flash, pulsing the board's reset signal is likely all this script need do. +However, in some scenarios, this script may perform other actions. For +example, it may call out to some SoC- or board-specific vendor utility in order +to download the U-Boot binary directly into RAM and execute it. This would +avoid the need for `u-boot-test-flash` to actually write U-Boot to flash, thus +saving wear on the flash chip(s). + +### Board-type-specific configuration + +Each board has a different configuration and behaviour. Many of these +differences can be automatically detected by parsing the `.config` file in the +build directory. However, some differences can't yet be handled automatically. + +For each board, an optional Python module `u_boot_board_${board_type}` may exist +to provide board-specific information to the test script. Any global value +defined in these modules is available for use by any test function. The data +contained in these scripts must be purely derived from U-Boot source code. +Hence, these configuration files are part of the U-Boot source tree too. + +### Execution environment configuration + +Each user's hardware setup may enable testing different subsets of the features +implemented by a particular board's configuration of U-Boot. For example, a +U-Boot configuration may support USB device mode and USB Mass Storage, but this +can only be tested if a USB cable is connected between the board and the host +machine running the test script. + +For each board, optional Python modules `u_boot_boardenv_${board_type}` and +`u_boot_boardenv_${board_type}_${board_identity}` may exist to provide +board-specific and board-identity-specific information to the test script. Any +global value defined in these modules is available for use by any test +function. The data contained in these is specific to a particular user's +hardware configuration. Hence, these configuration files are not part of the +U-Boot source tree, and should be installed outside of the source tree. Users +should set `$PYTHONPATH` prior to running the test script to allow these +modules to be loaded. + +### Board module parameter usage + +The test scripts rely on the following variables being defined by the board +module: + +- None at present. + +### U-Boot `.config` feature usage + +The test scripts rely on various U-Boot `.config` features, either directly in +order to test those features, or indirectly in order to query information from +the running U-Boot instance in order to test other features. + +One example is that testing of the `md` command requires knowledge of a RAM +address to use for the test. This data is parsed from the output of the +`bdinfo` command, and hence relies on CONFIG_CMD_BDI being enabled. + +For a complete list of dependencies, please search the test scripts for +instances of: + +- `buildconfig.get(...` +- `@pytest.mark.buildconfigspec(...` + +### Complete invocation example + +Assuming that you have installed the hook scripts into $HOME/ubtest/bin, and +any required environment configuration Python modules into $HOME/ubtest/py, +then you would likely invoke the test script as follows: + +If U-Boot has already been built: + +```bash +PATH=$HOME/ubtest/bin:$PATH \ + PYTHONPATH=${HOME}/ubtest/py:${PYTHONPATH} \ + ./test/py/test.py --bd seaboard +``` + +If you want the test script to compile U-Boot for you too, then you likely +need to set `$CROSS_COMPILE` to allow this, and invoke the test script as +follow: + +```bash +CROSS_COMPILE=arm-none-eabi- \ + PATH=$HOME/ubtest/bin:$PATH \ + PYTHONPATH=${HOME}/ubtest/py:${PYTHONPATH} \ + ./test/py/test.py --bd seaboard --build +``` + +## Writing tests + +Please refer to the pytest documentation for details of writing pytest tests. +Details specific to the U-Boot test suite are described below. + +A test fixture named `u_boot_console` should be used by each test function. This +provides the means to interact with the U-Boot console, and retrieve board and +environment configuration information. + +The function `u_boot_console.run_command()` executes a shell command on the +U-Boot console, and returns all output from that command. This allows +validation or interpretation of the command output. This function validates +that certain strings are not seen on the U-Boot console. These include shell +error messages and the U-Boot sign-on message (in order to detect unexpected +board resets). See the source of `u_boot_console_base.py` for a complete list of +"bad" strings. Some test scenarios are expected to trigger these strings. Use +`u_boot_console.disable_check()` to temporarily disable checking for specific +strings. See `test_unknown_cmd.py` for an example. + +Board- and board-environment configuration values may be accessed as sub-fields +of the `u_boot_console.config` object, for example +`u_boot_console.config.ram_base`. + +Build configuration values (from `.config`) may be accessed via the dictionary +`u_boot_console.config.buildconfig`, with keys equal to the Kconfig variable +names. diff --git a/test/py/conftest.py b/test/py/conftest.py new file mode 100644 index 000000000000..3b905ed86f1c --- /dev/null +++ b/test/py/conftest.py @@ -0,0 +1,335 @@ +# Copyright (c) 2015 Stephen Warren +# Copyright (c) 2015-2016, NVIDIA CORPORATION. All rights reserved. +# +# SPDX-License-Identifier: GPL-2.0 + +# Implementation of pytest run-time hook functions. These are invoked by +# pytest at certain points during operation, e.g. startup, for each executed +# test, at shutdown etc. These hooks perform functions such as: +# - Parsing custom command-line options. +# - Pullilng in user-specified board configuration. +# - Creating the U-Boot console test fixture. +# - Creating the HTML log file. +# - Monitoring each test's results. +# - Implementing custom pytest markers. + +import atexit +import errno +import os +import os.path +import pexpect +import pytest +from _pytest.runner import runtestprotocol +import ConfigParser +import StringIO +import sys + +# Globals: The HTML log file, and the connection to the U-Boot console. +log = None +console = None + +def mkdir_p(path): + '''Create a directory path, including parent directories, ignoring errors + due to already extant directories.''' + + try: + os.makedirs(path) + except OSError as exc: + if exc.errno == errno.EEXIST and os.path.isdir(path): + pass + else: + raise + +def pytest_addoption(parser): + '''pytest hook: Add custom command-line options to the cmdline parser.''' + + parser.addoption('--build-dir', default=None, + help='U-Boot build directory (O=)') + parser.addoption('--result-dir', default=None, + help='U-Boot test result/tmp directory') + parser.addoption('--persistent-data-dir', default=None, + help='U-Boot test persistent generated data directory') + parser.addoption('--board-type', '--bd', '-B', default='sandbox', + help='U-Boot board type') + parser.addoption('--board-identity', '--id', default='na', + help='U-Boot board identity/instance') + parser.addoption('--build', default=False, action='store_true', + help='Compile U-Boot before running tests') + +def pytest_configure(config): + '''pytest hook: Perform custom initialization at startup time.''' + + global log + global console + global ubconfig + + test_py_dir = os.path.dirname(os.path.abspath(__file__)) + source_dir = os.path.dirname(os.path.dirname(test_py_dir)) + + board_type = config.getoption('board_type') + board_type_filename = board_type.replace('-', '_') + + board_identity = config.getoption('board_identity') + board_identity_filename = board_identity.replace('-', '_') + + build_dir = config.getoption('build_dir') + if not build_dir: + build_dir = source_dir + '/build-' + board_type + mkdir_p(build_dir) + + result_dir = config.getoption('result_dir') + if not result_dir: + result_dir = build_dir + mkdir_p(result_dir) + + persistent_data_dir = config.getoption('persistent_data_dir') + if not persistent_data_dir: + persistent_data_dir = build_dir + '/persistent-data' + mkdir_p(persistent_data_dir) + + import multiplexed_log + log = multiplexed_log.Logfile(result_dir + '/test-log.html') + + if config.getoption('build'): + if build_dir != source_dir: + o_opt = 'O=%s' % build_dir + else: + o_opt = '' + cmds = ( + ['make', o_opt, '-s', board_type + '_defconfig'], + ['make', o_opt, '-s', '-j8'], + ) + runner = log.get_runner('make', sys.stdout) + for cmd in cmds: + runner.run(cmd, cwd=source_dir) + runner.close() + + class ArbitraryAttributeContainer(object): + pass + + ubconfig = ArbitraryAttributeContainer() + ubconfig.brd = dict() + ubconfig.env = dict() + + modules = [ + (ubconfig.brd, 'u_boot_board_' + board_type_filename), + (ubconfig.env, 'u_boot_boardenv_' + board_type_filename), + (ubconfig.env, 'u_boot_boardenv_' + board_type_filename + '_' + + board_identity_filename), + ] + for (dict_to_fill, module_name) in modules: + try: + module = __import__(module_name) + except ImportError: + continue + dict_to_fill.update(module.__dict__) + + ubconfig.buildconfig = dict() + + for conf_file in ('.config', 'include/autoconf.mk'): + dot_config = build_dir + '/' + conf_file + if not os.path.exists(dot_config): + raise Exception(conf_file + ' does not exist; ' + + 'try passing --build option?') + + with open(dot_config, 'rt') as f: + ini_str = '[root]\n' + f.read() + ini_sio = StringIO.StringIO(ini_str) + parser = ConfigParser.RawConfigParser() + parser.readfp(ini_sio) + ubconfig.buildconfig.update(parser.items('root')) + + ubconfig.test_py_dir = test_py_dir + ubconfig.source_dir = source_dir + ubconfig.build_dir = build_dir + ubconfig.result_dir = result_dir + ubconfig.persistent_data_dir = persistent_data_dir + ubconfig.board_type = board_type + ubconfig.board_identity = board_identity + + env_vars = ( + 'board_type', + 'board_identity', + 'source_dir', + 'test_py_dir', + 'build_dir', + 'result_dir', + 'persistent_data_dir', + ) + for v in env_vars: + os.environ['U_BOOT_' + v.upper()] = getattr(ubconfig, v) + + if board_type == 'sandbox': + import u_boot_console_sandbox + console = u_boot_console_sandbox.ConsoleSandbox(log, ubconfig) + else: + import u_boot_console_exec_attach + console = u_boot_console_exec_attach.ConsoleExecAttach(log, ubconfig) + +def pytest_generate_tests(metafunc): + '''pytest hook: parameterize test functions based on custom rules. + + If a test function takes parameter(s) (fixture names) of the form brd__xxx + or env__xxx, the brd and env configuration dictionaries are consulted to + find the list of values to use for those parameters, and the test is + parametrized so that it runs once for each combination of values.''' + + subconfigs = { + 'brd': console.config.brd, + 'env': console.config.env, + } + for fn in metafunc.fixturenames: + parts = fn.split('__') + if len(parts) < 2: + continue + if parts[0] not in subconfigs: + continue + subconfig = subconfigs[parts[0]] + vals = [] + val = subconfig.get(fn, []) + # If that exact name is a key in the data source: + if val: + # ... use the dict value as a single parameter value. + vals = (val, ) + else: + # ... otherwise, see if there's a key that contains a list of + # values to use instead. + vals = subconfig.get(fn + 's', []) + metafunc.parametrize(fn, vals) + +@pytest.fixture(scope='session') +def u_boot_console(request): + '''Returns the value of the u_boot_console test function parameter + (fixture).''' + + return console + +tests_not_run = set() +tests_failed = set() +tests_skipped = set() +tests_passed = set() + +def pytest_itemcollected(item): + '''pytest hook: Called once for each test invocation found during + collection. This enables our custom result analysis code to see the list + of all tests that should eventually be run.''' + + tests_not_run.add(item.name) + +def cleanup(): + '''Clean up all global state. Executed (via atexit) once the entire test + process is complete. This includes logging the status of all tests, and + the identity of any failed or skipped tests.''' + + if console: + console.close() + if log: + log.status_pass('%d passed' % len(tests_passed)) + if tests_skipped: + log.status_skipped('%d skipped' % len(tests_skipped)) + for test in tests_skipped: + log.status_skipped('... ' + test) + if tests_failed: + log.status_fail('%d failed' % len(tests_failed)) + for test in tests_failed: + log.status_fail('... ' + test) + if tests_not_run: + log.status_fail('%d not run' % len(tests_not_run)) + for test in tests_not_run: + log.status_fail('... ' + test) + log.close() +atexit.register(cleanup) + +def setup_boardspec(item): + '''Process any 'boardspec' marker for a test. Such a marker lists the set + of board types that a test does/doesn't support. If tests are being + executed on an unsupported board, the test is marked to be skipped.''' + + mark = item.get_marker('boardspec') + if not mark: + return + required_boards = [] + for board in mark.args: + if board.startswith('!'): + if ubconfig.board_type == board[1:]: + pytest.skip('board not supported') + return + else: + required_boards.append(board) + if required_boards and ubconfig.board_type not in required_boards: + pytest.skip('board not supported') + +def setup_buildconfigspec(item): + '''Process any 'buildconfigspec' marker for a test. Such a marker lists + some U-Boot configuration feature that the test requires. If tests are + being executed on an U-Boot build that doesn't have the required feature, + the test is marked to be skipped.''' + + mark = item.get_marker('buildconfigspec') + if not mark: + return + for option in mark.args: + if not ubconfig.buildconfig.get('config_' + option.lower(), None): + pytest.skip('.config feature not enabled') + +def pytest_runtest_setup(item): + '''pytest hook: Called once for each test to perform any custom + configuration. This hook is used to skip the test if certain conditions + apply.''' + + log.start_section(item.name) + setup_boardspec(item) + setup_buildconfigspec(item) + +def pytest_runtest_protocol(item, nextitem): + '''pytest hook: Called to execute a test. This hook wraps the standard + pytest runtestprotocol() function in order to acquire visibility into, and + record, each test function's result.''' + + reports = runtestprotocol(item, nextitem=nextitem) + failed = None + skipped = None + for report in reports: + if report.outcome == 'failed': + failed = report + break + if report.outcome == 'skipped': + if not skipped: + skipped = report + + if failed: + tests_failed.add(item.name) + elif skipped: + tests_skipped.add(item.name) + else: + tests_passed.add(item.name) + tests_not_run.remove(item.name) + + try: + if failed: + msg = 'FAILED:\n' + str(failed.longrepr) + log.status_fail(msg) + elif skipped: + msg = 'SKIPPED:\n' + str(skipped.longrepr) + log.status_skipped(msg) + else: + log.status_pass('OK') + except: + # If something went wrong with logging, it's better to let the test + # process continue, which may report other exceptions that triggered + # the logging issue (e.g. console.log wasn't created). Hence, just + # squash the exception. If the test setup failed due to e.g. syntax + # error somewhere else, this won't be seen. However, once that issue + # is fixed, if this exception still exists, it will then be logged as + # part of the test's stdout. + import traceback + print 'Exception occurred while logging runtest status:' + traceback.print_exc() + # FIXME: Can we force a test failure here? + + log.end_section(item.name) + + if failed: + console.cleanup_spawn() + + return reports diff --git a/test/py/multiplexed_log.css b/test/py/multiplexed_log.css new file mode 100644 index 000000000000..50f7b9092983 --- /dev/null +++ b/test/py/multiplexed_log.css @@ -0,0 +1,88 @@ +/* + * Copyright (c) 2015 Stephen Warren + * Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved. + * + * SPDX-License-Identifier: GPL-2.0 + */ + +/* + * This provides pretty formatting of the HTML log file, e.g. + * - colored bars beside/above log sections for easily parsed delineation. + * - color highlighting of various messages. + */ + +body { + background-color: black; + color: #ffffff; +} + +pre { + margin-top: 0px; + margin-bottom: 0px; +} + +.implicit { + color: #808080; +} + +.section { + border-style: solid; + border-color: #303030; + border-width: 0px 0px 0px 5px; + padding-left: 5px +} + +.section-header { + background-color: #303030; + margin-left: -5px; + margin-top: 5px; +} + +.section-trailer { + display: none; +} + +.stream { + border-style: solid; + border-color: #303030; + border-width: 0px 0px 0px 5px; + padding-left: 5px +} + +.stream-header { + background-color: #303030; + margin-left: -5px; + margin-top: 5px; +} + +.stream-trailer { + display: none; +} + +.error { + color: #ff0000 +} + +.warning { + color: #ffff00 +} + +.info { + color: #808080 +} + +.action { + color: #8080ff +} + +.status-pass { + color: #00ff00 +} + +.status-skipped { + color: #ffff00 +} + +.status-fail { + color: #ff0000 +} diff --git a/test/py/multiplexed_log.py b/test/py/multiplexed_log.py new file mode 100644 index 000000000000..0b8f5cfa4e1b --- /dev/null +++ b/test/py/multiplexed_log.py @@ -0,0 +1,335 @@ +# Copyright (c) 2015 Stephen Warren +# Copyright (c) 2015-2016, NVIDIA CORPORATION. All rights reserved. +# +# SPDX-License-Identifier: GPL-2.0 + +# Generate an HTML-formatted log file containing multiple streams of data, +# each represented in a well-delineated/-structured fashion. + +import cgi +import os.path +import shutil +import subprocess + +mod_dir = os.path.dirname(os.path.abspath(__file__)) + +class LogfileStream(object): + '''A file-like object used to write a single logical stream of data into + a multiplexed log file. Objects of this type should be created by factory + functions in the Logfile class rather than directly.''' + + def __init__(self, logfile, name, chained_file): + '''Initialize a new object. + + logfile: The Logfile object to log to. + name: The name of this log stream. + chained_file: The file-like object to which all stream data should be + logged to in addition to logfile. Can be None.''' + + self.logfile = logfile + self.name = name + self.chained_file = chained_file + + def close(self): + '''Dummy function so that this class is "file-like".''' + + pass + + def write(self, data, implicit=False): + '''Write data to the log stream.''' + + self.logfile.write(self, data, implicit) + if self.chained_file: + self.chained_file.write(data) + + def flush(self): + '''Flush the log stream, to ensure correct log interleaving.''' + + self.logfile.flush() + if self.chained_file: + self.chained_file.flush() + +class RunAndLog(object): + '''A utility object used to execute sub-processes and log their output to + a multiplexed log file. Objects of this type should be created by factory + functions in the Logfile class rather than directly.''' + + def __init__(self, logfile, name, chained_file): + '''Initialize a new object. + + logfile: The Logfile object to log to. + name: The name of this log stream or sub-process. + chained_file: The file-like object to which all stream data should be + logged to in addition to logfile. Can be None.''' + + self.logfile = logfile + self.name = name + self.chained_file = chained_file + + def close(self): + '''Clean up any resources managed by this object.''' + pass + + def run(self, cmd, cwd=None): + '''run a command as a sub-process, and log the results. + + cmd: The command to execute. + cwd: The directory to run the command in. Can be None to use the + current directory.''' + + msg = "+" + " ".join(cmd) + "\n" + if self.chained_file: + self.chained_file.write(msg) + self.logfile.write(self, msg) + + try: + p = subprocess.Popen(cmd, cwd=cwd, + stdin=None, stdout=subprocess.PIPE, stderr=subprocess.STDOUT) + (output, stderr) = p.communicate() + status = p.returncode + except subprocess.CalledProcessError as cpe: + output = cpe.output + status = cpe.returncode + self.logfile.write(self, output) + if status: + if self.chained_file: + self.chained_file.write(output) + raise Exception("command failed; exit code " + str(status)) + +class SectionCtxMgr(object): + '''A context manager for Python's "with" statement, which allows a certain + portion of test code to be logged to a separate section of the log file. + Objects of this type should be created by factory functions in the Logfile + class rather than directly.''' + + def __init__(self, log, marker): + '''Initialize a new object. + + log: The Logfile object to log to. + marker: The name of the nested log section.''' + + self.log = log + self.marker = marker + + def __enter__(self): + self.log.start_section(self.marker) + + def __exit__(self, extype, value, traceback): + self.log.end_section(self.marker) + +class Logfile(object): + '''Generates an HTML-formatted log file containing multiple streams of + data, each represented in a well-delineated/-structured fashion.''' + + def __init__(self, fn): + '''Initialize a new object. + + fn: The filename to write to.''' + + self.f = open(fn, "wt") + self.last_stream = None + self.blocks = [] + self.cur_evt = 1 + shutil.copy(mod_dir + "/multiplexed_log.css", os.path.dirname(fn)) + self.f.write("""\ +<html> +<head> +<link rel="stylesheet" type="text/css" href="multiplexed_log.css"> +</head> +<body> +<tt> +""") + + def close(self): + '''Close the log file. After calling this function, no more data may + be written to the log.''' + + self.f.write("""\ +</tt> +</body> +</html> +""") + self.f.close() + + # The set of characters that should be represented as hexadecimal codes in + # the log file. + _nonprint = ("^%" + "".join(chr(c) for c in range(0, 32) if c not in (9, 10)) + + "".join(chr(c) for c in range(127, 256))) + + def _escape(self, data): + '''Render raw log data into a format suitable for inclusion in an HTML + document. This includes HTML-escaping certain characters, and + translating control characters to a hexadecimal representation. + + data: The raw string data to be escaped.''' + + data = data.replace(chr(13), "") + data = "".join((c in self._nonprint) and ("%%%02x" % ord(c)) or + c for c in data) + data = cgi.escape(data) + return data + + def _terminate_stream(self): + '''Write HTML to the log file to terminate the current stream's data.''' + + self.cur_evt += 1 + if not self.last_stream: + return + self.f.write("</pre>\n") + self.f.write("<div class="stream-trailer" id="" + + self.last_stream.name + "">End stream: " + + self.last_stream.name + "</div>\n") + self.f.write("</div>\n") + self.last_stream = None + + def _note(self, note_type, msg): + '''Write HTML to the log file that represents some form of note or + one-off message. + + note_type: The type of note. This must be a value supported by the + accompanying multiplexed_log.css. + msg: The note/message to log.''' + + self._terminate_stream() + self.f.write("<div class="" + note_type + "">\n<pre>") + self.f.write(self._escape(msg)) + self.f.write("\n</pre></div>\n") + + def start_section(self, marker): + '''Write HTML to the log file to mark the start of a new nested + section. + + marker: The name of the section that is starting.''' + + self._terminate_stream() + self.blocks.append(marker) + blk_path = "/".join(self.blocks) + self.f.write("<div class="section" id="" + blk_path + "">\n") + self.f.write("<div class="section-header" id="" + blk_path + + "">Section: " + blk_path + "</div>\n") + + def end_section(self, marker): + '''Write HTML to the log file to mark the end of a the current nested + section. + + marker: The name of the section that is ending.''' + + if (not self.blocks) or (marker != self.blocks[-1]): + raise Exception("Block nesting mismatch: "%s" "%s"" % + (marker, "/".join(self.blocks))) + self._terminate_stream() + blk_path = "/".join(self.blocks) + self.f.write("<div class="section-trailer" id="section-trailer-" + + blk_path + "">End section: " + blk_path + "</div>\n") + self.f.write("</div>\n") + self.blocks.pop() + + def section(self, marker): + '''Create a context manager for Python's "with" statement, which allows + a certain portion of test code to be logged to a separate section of + the log file. + + marker: The name of the nested section. + + Usage: + with log.section("somename"): + some test code''' + + return SectionCtxMgr(self, marker) + + def error(self, msg): + '''Write an error note to the log file. + + msg: A message describing the error.''' + + self._note("error", msg) + + def warning(self, msg): + '''Write an warning note to the log file. + + msg: A message describing the warning.''' + + self._note("warning", msg) + + def info(self, msg): + '''Write an informational note to the log file. + + msg: An information message.''' + + self._note("info", msg) + + def action(self, msg): + '''Write an action note to the log file. + + msg: A message describing the action that is being logged.''' + + self._note("action", msg) + + def status_pass(self, msg): + '''Write a note to the log file describing test(s) which passed. + + msg: A message describing passed test(s).''' + + self._note("status-pass", msg) + + def status_skipped(self, msg): + '''Write a note to the log file describing skipped test(s). + + msg: A message describing passed test(s).''' + + self._note("status-skipped", msg) + + def status_fail(self, msg): + '''Write a note to the log file describing failed test(s). + + msg: A message describing passed test(s).''' + + self._note("status-fail", msg) + + def get_stream(self, name, chained_file=None): + '''Create an object to log a single stream's data into the log file. + + name: The name of the stream. + chained_file: The file-like object to which all stream data should be + logged to in addition to this log. Can be None.''' + + return LogfileStream(self, name, chained_file) + + def get_runner(self, name, chained_file=None): + '''Create a utility object to execute sub-processes and log their + output to + + name: The name of this sub-process. + chained_file: The file-like object to which all stream data should be + logged to in addition to logfile. Can be None.''' + + return RunAndLog(self, name, chained_file) + + def write(self, stream, data, implicit=False): + '''Write stream data into the log file. This function should only be + used by instances of LogfileStream or RunAndLog. + + stream: The stream whose data is being logged. + data: The data to log. + implicit: Boolean indicating whether data actually appeared in the + stream, or was implicitly generated. A valid use-case is to repeat a + shell prompt at the start of each separate log section, so that the + log makes more sense.''' + + if stream != self.last_stream: + self._terminate_stream() + self.f.write("<div class="stream" id="%s">\n" % stream.name) + self.f.write("<div class="stream-header" id="" + stream.name + + "">Stream: " + stream.name + "</div>\n") + self.f.write("<pre>") + if implicit: + self.f.write("<span class="implicit">") + self.f.write(self._escape(data)) + if implicit: + self.f.write("</span>") + self.last_stream = stream + + def flush(self): + '''Flush the log stream, to ensure correct log interleaving.''' + + self.f.flush() diff --git a/test/py/pytest.ini b/test/py/pytest.ini new file mode 100644 index 000000000000..67e514f42058 --- /dev/null +++ b/test/py/pytest.ini @@ -0,0 +1,11 @@ +# Copyright (c) 2015 Stephen Warren +# Copyright (c) 2015-2016, NVIDIA CORPORATION. All rights reserved. +# +# SPDX-License-Identifier: GPL-2.0 + +# Static configuration data for pytest. pytest reads this at startup time. + +[pytest] +markers = + boardspec: U-Boot: Describes the set of boards a test can/can't run on. + buildconfigspec: U-Boot: Describes Kconfig/config-header constraints. diff --git a/test/py/test.py b/test/py/test.py new file mode 100755 index 000000000000..9c23898774ed --- /dev/null +++ b/test/py/test.py @@ -0,0 +1,32 @@ +#!/usr/bin/env python + +# Copyright (c) 2015 Stephen Warren +# Copyright (c) 2015-2016, NVIDIA CORPORATION. All rights reserved. +# +# SPDX-License-Identifier: GPL-2.0 + +# Wrapper script to invoke pytest with the directory name that contains the +# U-Boot tests. + +import os +import os.path +import sys + +# Get rid of argv[0] +sys.argv.pop(0) + +# argv; py.test test_directory_name user-supplied-arguments +args = ["py.test", os.path.dirname(__file__) + "/tests"] +args.extend(sys.argv) + +try: + os.execvp("py.test", args) +except: + # Log full details of any exception for detailed analysis + import traceback + traceback.print_exc() + # Hint to the user that they likely simply haven't installed the required + # dependencies. + print >>sys.stderr, """ +exec(py.test) failed; perhaps you are missing some dependencies? +See test/py/README.md for the list.""" diff --git a/test/py/tests/test_000_version.py b/test/py/tests/test_000_version.py new file mode 100644 index 000000000000..0fddaf4fb6d5 --- /dev/null +++ b/test/py/tests/test_000_version.py @@ -0,0 +1,20 @@ +# Copyright (c) 2015 Stephen Warren +# Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved. +# +# SPDX-License-Identifier: GPL-2.0 + +# pytest runs tests the order of their module path, which is related to the +# filename containing the test. This file is named such that it is sorted +# first, simply as a very basic sanity check of the functionality of the U-Boot +# command prompt. + +def test_version(u_boot_console): + '''Test that the "version" command prints the U-Boot version.''' + + # "version" prints the U-Boot sign-on message. This is usually considered + # an error, so that any unexpected reboot causes an error. Here, this + # error detection is disabled since the sign-on message is expected. + with u_boot_console.disable_check('main_signon'): + response = u_boot_console.run_command('version') + # Ensure "version" printed what we expected. + u_boot_console.validate_main_signon_in_text(response) diff --git a/test/py/tests/test_help.py b/test/py/tests/test_help.py new file mode 100644 index 000000000000..894f3b5f1700 --- /dev/null +++ b/test/py/tests/test_help.py @@ -0,0 +1,9 @@ +# Copyright (c) 2015 Stephen Warren +# Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved. +# +# SPDX-License-Identifier: GPL-2.0 + +def test_help(u_boot_console): + '''Test that the "help" command can be executed.''' + + u_boot_console.run_command('help') diff --git a/test/py/tests/test_unknown_cmd.py b/test/py/tests/test_unknown_cmd.py new file mode 100644 index 000000000000..2de93e0026ff --- /dev/null +++ b/test/py/tests/test_unknown_cmd.py @@ -0,0 +1,14 @@ +# Copyright (c) 2015 Stephen Warren +# Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved. +# +# SPDX-License-Identifier: GPL-2.0 + +def test_unknown_command(u_boot_console): + '''Test that executing an unknown command causes U-Boot to print an + error.''' + + # The "unknown command" error is actively expected here, + # so error detection for it is disabled. + with u_boot_console.disable_check('unknown_command'): + response = u_boot_console.run_command('non_existent_cmd') + assert('Unknown command 'non_existent_cmd' - try 'help'' in response) diff --git a/test/py/u_boot_console_base.py b/test/py/u_boot_console_base.py new file mode 100644 index 000000000000..9f3696947d6d --- /dev/null +++ b/test/py/u_boot_console_base.py @@ -0,0 +1,260 @@ +# Copyright (c) 2015 Stephen Warren +# Copyright (c) 2015-2016, NVIDIA CORPORATION. All rights reserved. +# +# SPDX-License-Identifier: GPL-2.0 + +# Common logic to interact with U-Boot via the console. This class provides +# the interface that tests use to execute U-Boot shell commands and wait for +# their results. Sub-classes exist to perform board-type-specific setup +# operations, such as spawning a sub-process for Sandbox, or attaching to the +# serial console of real hardware. + +import multiplexed_log +import os +import pytest +import re +import sys + +# Regexes for text we expect U-Boot to send to the console. +pattern_u_boot_spl_signon = re.compile('(U-Boot SPL \d{4}\.\d{2}-[^\r\n]*)') +pattern_u_boot_main_signon = re.compile('(U-Boot \d{4}\.\d{2}-[^\r\n]*)') +pattern_stop_autoboot_prompt = re.compile('Hit any key to stop autoboot: ') +pattern_unknown_command = re.compile('Unknown command '.*' - try 'help'') +pattern_error_notification = re.compile('## Error: ') + +class ConsoleDisableCheck(object): + '''Context manager (for Python's with statement) that temporarily disables + the specified console output error check. This is useful when deliberately + executing a command that is known to trigger one of the error checks, in + order to test that the error condition is actually raised. This class is + used internally by ConsoleBase::disable_check(); it is not intended for + direct usage.''' + + def __init__(self, console, check_type): + self.console = console + self.check_type = check_type + + def __enter__(self): + self.console.disable_check_count[self.check_type] += 1 + + def __exit__(self, extype, value, traceback): + self.console.disable_check_count[self.check_type] -= 1 + +class ConsoleBase(object): + '''The interface through which test functions interact with the U-Boot + console. This primarily involves executing shell commands, capturing their + results, and checking for common error conditions. Some common utilities + are also provided too.''' + + def __init__(self, log, config, max_fifo_fill): + '''Initialize a U-Boot console connection. Can only usefully be called + by sub-classes.''' + + self.log = log + self.config = config + self.max_fifo_fill = max_fifo_fill + + self.logstream = self.log.get_stream('console', sys.stdout) + + # Array slice removes leading/trailing quotes + self.prompt = self.config.buildconfig['config_sys_prompt'][1:-1] + self.prompt_escaped = re.escape(self.prompt) + self.p = None + self.disable_check_count = { + 'spl_signon': 0, + 'main_signon': 0, + 'unknown_command': 0, + 'error_notification': 0, + } + + self.at_prompt = False + self.at_prompt_logevt = None + self.ram_base = None + + def close(self): + '''Terminate the connection to the U-Boot console. Likely only useful + once all interaction with U-Boot is complete.''' + + if self.p: + self.p.close() + self.logstream.close() + + def run_command(self, cmd, wait_for_echo=True, send_nl=True, + wait_for_prompt=True): + '''Execute a command via the U-Boot console. The command is always sent + to U-Boot. + + U-Boot echoes any command back to its output, and this function + typically waits for that to occur. The wait can be disabled by setting + wait_for_echo=False, which is useful e.g. when sending CTRL-C to + interrupt a long-running command such as "ums". + + Command execution is typically triggered by sending a newline + character. This can be disabled by setting send_nl=False, which is + also useful when sending CTRL-C. + + This function typically waits for the command to finish executing, and + returns the console output that it generated. This can be disabled by + setting wait_for_prompt=False, which is useful when invoking a long- + running command such as "ums".''' + + self.ensure_spawned() + + if self.at_prompt and \ + self.at_prompt_logevt != self.logstream.logfile.cur_evt: + self.logstream.write(self.prompt, implicit=True) + + bad_patterns = [] + bad_pattern_ids = [] + if (self.disable_check_count['spl_signon'] == 0 and + self.u_boot_spl_signon): + bad_patterns.append(self.u_boot_spl_signon_escaped) + bad_pattern_ids.append('SPL signon') + if self.disable_check_count['main_signon'] == 0: + bad_patterns.append(self.u_boot_main_signon_escaped) + bad_pattern_ids.append('U-Boot main signon') + if self.disable_check_count['unknown_command'] == 0: + bad_patterns.append(pattern_unknown_command) + bad_pattern_ids.append('Unknown command') + if self.disable_check_count['error_notification'] == 0: + bad_patterns.append(pattern_error_notification) + bad_pattern_ids.append('Error notification') + try: + self.at_prompt = False + if send_nl: + cmd += '\n' + while cmd: + # Limit max outstanding data, so UART FIFOs don't overflow + chunk = cmd[:self.max_fifo_fill] + cmd = cmd[self.max_fifo_fill:] + self.p.send(chunk) + if not wait_for_echo: + continue + chunk = re.escape(chunk) + chunk = chunk.replace('\\n', '[\r\n]') + m = self.p.expect([chunk] + bad_patterns) + if m != 0: + self.at_prompt = False + raise Exception('Bad pattern found on console: ' + + bad_pattern_ids[m - 1]) + if not wait_for_prompt: + return + m = self.p.expect([self.prompt_escaped] + bad_patterns) + if m != 0: + self.at_prompt = False + raise Exception('Bad pattern found on console: ' + + bad_pattern_ids[m - 1]) + self.at_prompt = True + self.at_prompt_logevt = self.logstream.logfile.cur_evt + # Only strip \r\n; space/TAB might be significant if testing + # indentation. + return self.p.before.strip('\r\n') + except Exception as ex: + self.log.error(str(ex)) + self.cleanup_spawn() + raise + + def ctrlc(self): + '''Send a CTRL-C character to U-Boot. This is useful in order to + stop execution of long-running synchronous commands such as "ums".''' + + self.run_command(chr(3), wait_for_echo=False, send_nl=False) + + def ensure_spawned(self): + '''Ensure that this console object is attached to a correctly operating + U-Boot instance. This may require spawning a new Sandbox process or + resetting target hardware, as defined by the implementation sub-class. + + This is an internal function and should not be called directly.''' + + if self.p: + return + try: + self.at_prompt = False + self.log.action('Starting U-Boot') + self.p = self.get_spawn() + # Real targets can take a long time to scroll large amounts of + # text if LCD is enabled. This value may need tweaking in the + # future, possibly per-test to be optimal. This works for 'help' + # on board 'seaboard'. + self.p.timeout = 30000 + self.p.logfile_read = self.logstream + if self.config.buildconfig.get('CONFIG_SPL', False) == 'y': + self.p.expect([pattern_u_boot_spl_signon]) + self.u_boot_spl_signon = self.p.after + self.u_boot_spl_signon_escaped = re.escape(self.p.after) + else: + self.u_boot_spl_signon = None + self.p.expect([pattern_u_boot_main_signon]) + self.u_boot_main_signon = self.p.after + self.u_boot_main_signon_escaped = re.escape(self.p.after) + while True: + match = self.p.expect([self.prompt_escaped, + pattern_stop_autoboot_prompt]) + if match == 1: + self.p.send(chr(3)) # CTRL-C + continue + break + self.at_prompt = True + self.at_prompt_logevt = self.logstream.logfile.cur_evt + except Exception as ex: + self.log.error(str(ex)) + self.cleanup_spawn() + raise + + def cleanup_spawn(self): + '''Shut down all interaction with the U-Boot instance. This is used + when an error is detected prior to re-establishing a connection with a + fresh U-Boot instance. + + This is an internal function and should not be called directly.''' + + try: + if self.p: + self.p.close() + except: + pass + self.p = None + + def validate_main_signon_in_text(self, text): + '''Validate that a command's console output includes the expected + U-Boot signon message. This is primarily useful for validating the + "version" command without duplicating the signon text regex in a test + function.''' + + assert(self.u_boot_main_signon in text) + + def disable_check(self, check_type): + '''Create a new Python context manager (for use with the "with" + statement) which temporarily disables a particular console output error + check. Valid values for check_type may be found in + self.disable_check_count above.''' + + return ConsoleDisableCheck(self, check_type) + + def find_ram_base(self): + '''Probe the running U-Boot to determine the address of the first bank + of RAM. This is useful for tests that test reading/writing RAM, or + load/save files that aren't associated with some standard address + typically represented in an environment variable such as + ${kernel_addr_r}. The value is cached so that it only needs to be + actively read once.''' + + if self.config.buildconfig.get('config_cmd_bdi', 'n') != 'y': + pytest.skip('bdinfo command not supported') + if self.ram_base == -1: + pytest.skip('Previously failed to find RAM bank start') + if self.ram_base is not None: + return self.ram_base + + with self.log.section('find_ram_base'): + response = self.run_command('bdinfo') + for l in response.split('\n'): + if '-> start' in l: + self.ram_base = int(l.split('=')[1].strip(), 16) + break + if self.ram_base is None: + self.ram_base = -1 + raise Exception('Failed to find RAM bank start in `bdinfo`') + + return self.ram_base diff --git a/test/py/u_boot_console_exec_attach.py b/test/py/u_boot_console_exec_attach.py new file mode 100644 index 000000000000..9fcc32c5f73b --- /dev/null +++ b/test/py/u_boot_console_exec_attach.py @@ -0,0 +1,51 @@ +# Copyright (c) 2015 Stephen Warren +# Copyright (c) 2015-2016, NVIDIA CORPORATION. All rights reserved. +# +# SPDX-License-Identifier: GPL-2.0 + +# Logic to interact with U-Boot running on real hardware, typically via a +# physical serial port. + +from ubspawn import Spawn +from u_boot_console_base import ConsoleBase + +class ConsoleExecAttach(ConsoleBase): + '''Represents a physical connection to a U-Boot console, typically via a + serial port. This implementation executes a sub-process to attach to the + console, expecting that the stdin/out of the sub-process will be forwarded + to/from the physical hardware. This approach isolates the test infra- + structure from the user-/installation-specific details of how to + communicate with, and the identity of, serial ports etc.''' + + def __init__(self, log, config): + '''Initialize a U-Boot console connection. + + log: A multiplexed_log::Logfile instance. + config: A "configuration" object as defined in conftest.py.''' + + # The max_fifo_fill value might need tweaking per-board/-SoC? + # 1 would be safe anywhere, but is very slow (a pexpect issue?). + # 16 is a common FIFO size. + # HW flow control would mean this could be infinite. + super(ConsoleExecAttach, self).__init__(log, config, max_fifo_fill=16) + + self.log.action('Flashing U-Boot') + cmd = ['u-boot-test-flash', config.board_type, config.board_identity] + runner = self.log.get_runner(cmd[0]) + runner.run(cmd) + runner.close() + + def get_spawn(self): + '''Create and return a new "spawn" object that is attached to a + freshly reset board running U-Boot.''' + + args = [self.config.board_type, self.config.board_identity] + s = Spawn(['u-boot-test-console'] + args) + + self.log.action('Resetting board') + cmd = ['u-boot-test-reset'] + args + runner = self.log.get_runner(cmd[0]) + runner.run(cmd) + runner.close() + + return s diff --git a/test/py/u_boot_console_sandbox.py b/test/py/u_boot_console_sandbox.py new file mode 100644 index 000000000000..0c0343935167 --- /dev/null +++ b/test/py/u_boot_console_sandbox.py @@ -0,0 +1,48 @@ +# Copyright (c) 2015 Stephen Warren +# Copyright (c) 2015-2016, NVIDIA CORPORATION. All rights reserved. +# +# SPDX-License-Identifier: GPL-2.0 + +# Logic to interact with the sandbox port of U-Boot, running as a sub-process. + +import time +from ubspawn import Spawn +from u_boot_console_base import ConsoleBase + +class ConsoleSandbox(ConsoleBase): + '''Represents a connection to a sandbox U-Boot console, executed as a sub- + process.''' + + def __init__(self, log, config): + '''Initialize a U-Boot console connection. + + log: A multiplexed_log::Logfile instance. + config: A "configuration" object as defined in conftest.py.''' + + super(ConsoleSandbox, self).__init__(log, config, max_fifo_fill=1024) + + def get_spawn(self): + '''Create and return a new "spawn" object that is attached to a + freshly invoked U-Boot sandbox process.''' + + return Spawn([self.config.build_dir + '/u-boot']) + + def kill(self, sig): + '''Send a specific Unix signal to the sandbox process.''' + + self.ensure_spawned() + self.log.action('kill %d' % sig) + self.p.kill(sig) + + def validate_exited(self): + '''Validate that the sandbox process has exited.''' + + p = self.p + self.p = None + for i in xrange(100): + ret = not p.isalive() + if ret: + break + time.sleep(0.1) + p.close() + return ret diff --git a/test/py/u_boot_spawn.py b/test/py/u_boot_spawn.py new file mode 100644 index 000000000000..12e417c841ed --- /dev/null +++ b/test/py/u_boot_spawn.py @@ -0,0 +1,123 @@ +# Copyright (c) 2015-2016, NVIDIA CORPORATION. All rights reserved. +# +# SPDX-License-Identifier: GPL-2.0 + +# Logic to spawn a sub-process and interact with its stdio. + +import os +import re +import pty +import select +import time + +class Timeout(Exception): + '''An exception sub-class that indicates that a timeout occurred.''' + pass + +class Spawn(object): + '''Represents the stdio of a freshly created sub-process. Commands may be + sent to the process, and responses waited for.''' + + def __init__(self, args): + '''Spawn (fork/exec) the sub-process and initialize interaction with + it. + + args: array of processs arguments. argv[0] is the command to execute.''' + + self.waited = False + self.buf = '' + self.logfile_read = None + self.before = '' + self.after = '' + self.timeout = None + + (self.pid, self.fd) = pty.fork() + if self.pid == 0: + try: + os.execvp(args[0], args) + except: + print 'CHILD EXECEPTION:' + import traceback + traceback.print_exc() + finally: + os._exit(255) + + self.poll = select.poll() + self.poll.register(self.fd, select.POLLIN | select.POLLPRI | select.POLLERR | select.POLLHUP | select.POLLNVAL) + + def kill(self, sig): + '''Send unix signal "sig" to the child process.''' + + os.kill(self.pid, sig) + + def isalive(self): + '''Determine whether the child process is still running.''' + + if self.waited: + return False + + w = os.waitpid(self.pid, os.WNOHANG) + if w[0] == 0: + return True + + self.waited = True + return False + + def send(self, data): + '''Send data to the sub-process's stdin.''' + + os.write(self.fd, data) + + def expect(self, patterns): + '''Wait for the sub-process to emit one of a set of expected patterns, + or for a timeout to occur. + + patterns: a list of strings or regex objects that we expect to see in + the sub-process' stdout.''' + + for pi in xrange(len(patterns)): + if type(patterns[pi]) == type(''): + patterns[pi] = re.compile(patterns[pi]) + + try: + while True: + earliest_m = None + earliest_pi = None + for pi in xrange(len(patterns)): + pattern = patterns[pi] + m = pattern.search(self.buf) + if not m: + continue + if earliest_m and m.start() > earliest_m.start(): + continue + earliest_m = m + earliest_pi = pi + if earliest_m: + pos = earliest_m.start() + posafter = earliest_m.end() + 1 + self.before = self.buf[:pos] + self.after = self.buf[pos:posafter] + self.buf = self.buf[posafter:] + return earliest_pi + events = self.poll.poll(self.timeout) + if not events: + raise Timeout() + c = os.read(self.fd, 1024) + if not c: + raise EOFError() + if self.logfile_read: + self.logfile_read.write(c) + self.buf += c + finally: + if self.logfile_read: + self.logfile_read.flush() + + def close(self): + '''Close the stdio connection to the sub-process, and wait until the + sub-process is no longer running.''' + + os.close(self.fd) + for i in xrange(100): + if not self.isalive(): + break + time.sleep(0.1)