reference, declarationdefinition
definition → references, declarations, derived classes, virtual overrides
reference to multiple definitions → definitions
unreferenced
    1
    2
    3
    4
    5
    6
    7
    8
    9
   10
   11
   12
   13
   14
   15
   16
   17
   18
   19
   20
   21
   22
   23
   24
   25
   26
   27
   28
   29
   30
   31
   32
   33
   34
   35
   36
   37
   38
   39
   40
   41
   42
   43
   44
   45
   46
   47
   48
   49
   50
   51
   52
   53
   54
   55
   56
   57
   58
   59
   60
   61
   62
   63
   64
   65
   66
   67
   68
   69
   70
   71
   72
   73
   74
   75
   76
   77
   78
   79
   80
   81
   82
   83
   84
   85
   86
   87
   88
   89
   90
   91
   92
   93
   94
   95
   96
   97
   98
   99
  100
  101
  102
  103
  104
  105
  106
  107
  108
  109
  110
  111
  112
  113
  114
  115
  116
  117
  118
  119
  120
  121
  122
  123
  124
  125
  126
  127
  128
  129
  130
  131
  132
  133
  134
  135
  136
  137
  138
  139
  140
  141
  142
  143
  144
  145
  146
  147
  148
  149
  150
  151
  152
  153
  154
  155
  156
  157
  158
  159
  160
  161
  162
  163
  164
  165
  166
  167
  168
  169
  170
  171
  172
  173
  174
  175
  176
  177
  178
  179
  180
  181
  182
  183
  184
  185
  186
  187
  188
  189
  190
  191
from __future__ import absolute_import
import inspect
import os
import platform
import sys

import lit.Test
import lit.formats
import lit.TestingConfig
import lit.util

# LitConfig must be a new style class for properties to work
class LitConfig(object):
    """LitConfig - Configuration data for a 'lit' test runner instance, shared
    across all tests.

    The LitConfig object is also used to communicate with client configuration
    files, it is always passed in as the global variable 'lit' so that
    configuration files can access common functionality and internal components
    easily.
    """

    def __init__(self, progname, path, quiet,
                 useValgrind, valgrindLeakCheck, valgrindArgs,
                 noExecute, debug, isWindows,
                 params, config_prefix = None,
                 maxIndividualTestTime = 0,
                 maxFailures = None,
                 parallelism_groups = {},
                 echo_all_commands = False):
        # The name of the test runner.
        self.progname = progname
        # The items to add to the PATH environment variable.
        self.path = [str(p) for p in path]
        self.quiet = bool(quiet)
        self.useValgrind = bool(useValgrind)
        self.valgrindLeakCheck = bool(valgrindLeakCheck)
        self.valgrindUserArgs = list(valgrindArgs)
        self.noExecute = noExecute
        self.debug = debug
        self.isWindows = bool(isWindows)
        self.params = dict(params)
        self.bashPath = None

        # Configuration files to look for when discovering test suites.
        self.config_prefix = config_prefix or 'lit'
        self.suffixes = ['cfg.py', 'cfg']
        self.config_names = ['%s.%s' % (self.config_prefix,x) for x in self.suffixes]
        self.site_config_names = ['%s.site.%s' % (self.config_prefix,x) for x in self.suffixes]
        self.local_config_names = ['%s.local.%s' % (self.config_prefix,x) for x in self.suffixes]

        self.numErrors = 0
        self.numWarnings = 0

        self.valgrindArgs = []
        if self.useValgrind:
            self.valgrindArgs = ['valgrind', '-q', '--run-libc-freeres=no',
                                 '--tool=memcheck', '--trace-children=yes',
                                 '--error-exitcode=123']
            if self.valgrindLeakCheck:
                self.valgrindArgs.append('--leak-check=full')
            else:
                # The default is 'summary'.
                self.valgrindArgs.append('--leak-check=no')
            self.valgrindArgs.extend(self.valgrindUserArgs)

        self.maxIndividualTestTime = maxIndividualTestTime
        self.maxFailures = maxFailures
        self.parallelism_groups = parallelism_groups
        self.echo_all_commands = echo_all_commands

    @property
    def maxIndividualTestTime(self):
        """
            Interface for getting maximum time to spend executing
            a single test
        """
        return self._maxIndividualTestTime

    @property
    def maxIndividualTestTimeIsSupported(self):
        """
            Returns a tuple (<supported> , <error message>)
            where
            `<supported>` is True if setting maxIndividualTestTime is supported
                on the current host, returns False otherwise.
            `<error message>` is an empty string if `<supported>` is True,
                otherwise is contains a string describing why setting
                maxIndividualTestTime is not supported.
        """
        return lit.util.killProcessAndChildrenIsSupported()

    @maxIndividualTestTime.setter
    def maxIndividualTestTime(self, value):
        """
            Interface for setting maximum time to spend executing
            a single test
        """
        if not isinstance(value, int):
            self.fatal('maxIndividualTestTime must set to a value of type int.')
        self._maxIndividualTestTime = value
        if self.maxIndividualTestTime > 0:
            # The current implementation needs psutil on some platforms to set
            # a timeout per test. Check it's available.
            # See lit.util.killProcessAndChildren()
            supported, errormsg = self.maxIndividualTestTimeIsSupported
            if not supported:
                self.fatal('Setting a timeout per test not supported. ' +
                           errormsg)
        elif self.maxIndividualTestTime < 0:
            self.fatal('The timeout per test must be >= 0 seconds')

    def load_config(self, config, path):
        """load_config(config, path) - Load a config object from an alternate
        path."""
        if self.debug:
            self.note('load_config from %r' % path)
        config.load_from_path(path, self)
        return config

    def getBashPath(self):
        """getBashPath - Get the path to 'bash'"""
        if self.bashPath is not None:
            return self.bashPath

        self.bashPath = lit.util.which('bash', os.pathsep.join(self.path))
        if self.bashPath is None:
            self.bashPath = lit.util.which('bash')

        if self.bashPath is None:
            self.bashPath = ''

        # Check whether the found version of bash is able to cope with paths in
        # the host path format. If not, don't return it as it can't be used to
        # run scripts. For example, WSL's bash.exe requires '/mnt/c/foo' rather
        # than 'C:\\foo' or 'C:/foo'.
        if self.isWindows and self.bashPath:
            command = [self.bashPath, '-c',
                       '[[ -f "%s" ]]' % self.bashPath.replace('\\', '\\\\')]
            _, _, exitCode = lit.util.executeCommand(command)
            if exitCode:
                self.note('bash command failed: %s' % (
                    ' '.join('"%s"' % c for c in command)))
                self.bashPath = ''

        if not self.bashPath:
            self.warning('Unable to find a usable version of bash.')

        return self.bashPath

    def getToolsPath(self, dir, paths, tools):
        if dir is not None and os.path.isabs(dir) and os.path.isdir(dir):
            if not lit.util.checkToolsPath(dir, tools):
                return None
        else:
            dir = lit.util.whichTools(tools, paths)

        # bash
        self.bashPath = lit.util.which('bash', dir)
        if self.bashPath is None:
            self.bashPath = ''

        return dir

    def _write_message(self, kind, message):
        # Get the file/line where this message was generated.
        f = inspect.currentframe()
        # Step out of _write_message, and then out of wrapper.
        f = f.f_back.f_back
        file,line,_,_,_ = inspect.getframeinfo(f)
        location = '%s:%d' % (file, line)

        sys.stderr.write('%s: %s: %s: %s\n' % (self.progname, location,
                                               kind, message))

    def note(self, message):
        if not self.quiet:
            self._write_message('note', message)

    def warning(self, message):
        if not self.quiet:
            self._write_message('warning', message)
        self.numWarnings += 1

    def error(self, message):
        self._write_message('error', message)
        self.numErrors += 1

    def fatal(self, message):
        self._write_message('fatal', message)
        sys.exit(2)