testlib.py 70.2 KB
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# coding=utf8
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#
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# (c) Simon Marlow 2002
#

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from __future__ import print_function
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import io
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import shutil
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import os
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import errno
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import string
import re
import traceback
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import time
import datetime
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import copy
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import glob
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import sys
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from math import ceil, trunc
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import collections
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import subprocess
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from testglobals import *
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from testutil import *
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extra_src_files = {'T4198': ['exitminus1.c']} # TODO: See #12223
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if config.use_threads:
    import threading
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    try:
        import thread
    except ImportError: # Python 3
        import _thread as thread
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global wantToStop
wantToStop = False
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global pool_sema
if config.use_threads:
    pool_sema = threading.BoundedSemaphore(value=config.threads)

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def stopNow():
    global wantToStop
    wantToStop = True
def stopping():
    return wantToStop

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# Options valid for the current test only (these get reset to
# testdir_testopts after each test).
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global testopts_local
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if config.use_threads:
    testopts_local = threading.local()
else:
    class TestOpts_Local:
        pass
    testopts_local = TestOpts_Local()
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def getTestOpts():
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    return testopts_local.x
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def setLocalTestOpts(opts):
    global testopts_local
    testopts_local.x=opts
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def isStatsTest():
    opts = getTestOpts()
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    return bool(opts.compiler_stats_range_fields or opts.stats_range_fields)
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# This can be called at the top of a file of tests, to set default test options
# for the following tests.
def setTestOpts( f ):
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    global thisdir_settings
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    thisdir_settings = [thisdir_settings, f]
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# -----------------------------------------------------------------------------
# Canned setup functions for common cases.  eg. for a test you might say
#
#      test('test001', normal, compile, [''])
#
# to run it without any options, but change it to
#
#      test('test001', expect_fail, compile, [''])
#
# to expect failure for this test.

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def normal( name, opts ):
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    return;

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def skip( name, opts ):
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    opts.skip = 1

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def expect_fail( name, opts ):
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    # The compiler, testdriver, OS or platform is missing a certain
    # feature, and we don't plan to or can't fix it now or in the
    # future.
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    opts.expect = 'fail';

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def reqlib( lib ):
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    return lambda name, opts, l=lib: _reqlib (name, opts, l )
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def stage1(name, opts):
    # See Note [Why is there no stage1 setup function?]
    framework_fail(name, 'stage1 setup function does not exist',
                   'add your test to testsuite/tests/stage1 instead')

# Note [Why is there no stage1 setup function?]
#
# Presumably a stage1 setup function would signal that the stage1
# compiler should be used to compile a test.
#
# Trouble is, the path to the compiler + the `ghc --info` settings for
# that compiler are currently passed in from the `make` part of the
# testsuite driver.
#
# Switching compilers in the Python part would be entirely too late, as
# all ghc_with_* settings would be wrong. See config/ghc for possible
# consequences (for example, config.run_ways would still be
# based on the default compiler, quite likely causing ./validate --slow
# to fail).
#
# It would be possible to let the Python part of the testsuite driver
# make the call to `ghc --info`, but doing so would require quite some
# work. Care has to be taken to not affect the run_command tests for
# example, as they also use the `ghc --info` settings:
#     quasiquotation/qq007/Makefile:ifeq "$(GhcDynamic)" "YES"
#
# If you want a test to run using the stage1 compiler, add it to the
# testsuite/tests/stage1 directory. Validate runs the tests in that
# directory with `make stage=1`.

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# Cache the results of looking to see if we have a library or not.
# This makes quite a difference, especially on Windows.
have_lib = {}

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def _reqlib( name, opts, lib ):
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    if lib in have_lib:
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        got_it = have_lib[lib]
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    else:
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        cmd = strip_quotes(config.ghc_pkg)
        p = subprocess.Popen([cmd, '--no-user-package-db', 'describe', lib],
                             stdout=subprocess.PIPE,
                             stderr=subprocess.PIPE)
        # read from stdout and stderr to avoid blocking due to
        # buffers filling
        p.communicate()
        r = p.wait()
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        got_it = r == 0
        have_lib[lib] = got_it

    if not got_it:
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        opts.expect = 'missing-lib'
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def req_haddock( name, opts ):
    if not config.haddock:
        opts.expect = 'missing-lib'

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def req_profiling( name, opts ):
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    '''Require the profiling libraries (add 'GhcLibWays += p' to mk/build.mk)'''
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    if not config.have_profiling:
        opts.expect = 'fail'

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def req_shared_libs( name, opts ):
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    if not config.have_shared_libs:
        opts.expect = 'fail'

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def req_interp( name, opts ):
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    if not config.have_interp:
        opts.expect = 'fail'

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def req_smp( name, opts ):
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    if not config.have_smp:
        opts.expect = 'fail'

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def ignore_stdout(name, opts):
    opts.ignore_stdout = True

def ignore_stderr(name, opts):
    opts.ignore_stderr = True
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def combined_output( name, opts ):
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    opts.combined_output = True

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# -----

def expect_fail_for( ways ):
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    return lambda name, opts, w=ways: _expect_fail_for( name, opts, w )
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def _expect_fail_for( name, opts, ways ):
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    opts.expect_fail_for = ways

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def expect_broken( bug ):
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    # This test is a expected not to work due to the indicated trac bug
    # number.
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    return lambda name, opts, b=bug: _expect_broken (name, opts, b )

def _expect_broken( name, opts, bug ):
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    record_broken(name, opts, bug)
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    opts.expect = 'fail';

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def expect_broken_for( bug, ways ):
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    return lambda name, opts, b=bug, w=ways: _expect_broken_for( name, opts, b, w )
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def _expect_broken_for( name, opts, bug, ways ):
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    record_broken(name, opts, bug)
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    opts.expect_fail_for = ways
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def record_broken(name, opts, bug):
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    global brokens
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    me = (bug, opts.testdir, name)
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    if not me in brokens:
        brokens.append(me)

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def _expect_pass(way):
    # Helper function. Not intended for use in .T files.
    opts = getTestOpts()
    return opts.expect == 'pass' and way not in opts.expect_fail_for

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# -----

def omit_ways( ways ):
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    return lambda name, opts, w=ways: _omit_ways( name, opts, w )
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def _omit_ways( name, opts, ways ):
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    opts.omit_ways = ways

# -----

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def only_ways( ways ):
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    return lambda name, opts, w=ways: _only_ways( name, opts, w )
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def _only_ways( name, opts, ways ):
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    opts.only_ways = ways

# -----

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def extra_ways( ways ):
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    return lambda name, opts, w=ways: _extra_ways( name, opts, w )
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def _extra_ways( name, opts, ways ):
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    opts.extra_ways = ways

# -----

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def set_stdin( file ):
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   return lambda name, opts, f=file: _set_stdin(name, opts, f);
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def _set_stdin( name, opts, f ):
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   opts.stdin = f

# -----

def exit_code( val ):
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    return lambda name, opts, v=val: _exit_code(name, opts, v);
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def _exit_code( name, opts, v ):
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    opts.exit_code = v

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def signal_exit_code( val ):
    if opsys('solaris2'):
        return exit_code( val );
    else:
        # When application running on Linux receives fatal error
        # signal, then its exit code is encoded as 128 + signal
        # value. See http://www.tldp.org/LDP/abs/html/exitcodes.html
        # I assume that Mac OS X behaves in the same way at least Mac
        # OS X builder behavior suggests this.
        return exit_code( val+128 );

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# -----

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def compile_timeout_multiplier( val ):
    return lambda name, opts, v=val: _compile_timeout_multiplier(name, opts, v)
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def _compile_timeout_multiplier( name, opts, v ):
    opts.compile_timeout_multiplier = v

def run_timeout_multiplier( val ):
    return lambda name, opts, v=val: _run_timeout_multiplier(name, opts, v)

def _run_timeout_multiplier( name, opts, v ):
    opts.run_timeout_multiplier = v
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# -----

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def extra_run_opts( val ):
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    return lambda name, opts, v=val: _extra_run_opts(name, opts, v);
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def _extra_run_opts( name, opts, v ):
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    opts.extra_run_opts = v

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# -----

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def extra_hc_opts( val ):
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    return lambda name, opts, v=val: _extra_hc_opts(name, opts, v);
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def _extra_hc_opts( name, opts, v ):
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    opts.extra_hc_opts = v

# -----

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def extra_clean( files ):
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    # TODO. Remove all calls to extra_clean.
    return lambda _name, _opts: None
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def extra_files(files):
    return lambda name, opts: _extra_files(name, opts, files)

def _extra_files(name, opts, files):
    opts.extra_files.extend(files)

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# -----

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def stats_num_field( field, expecteds ):
    return lambda name, opts, f=field, e=expecteds: _stats_num_field(name, opts, f, e);

def _stats_num_field( name, opts, field, expecteds ):
    if field in opts.stats_range_fields:
        framework_fail(name, 'duplicate-numfield', 'Duplicate ' + field + ' num_field check')

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    if type(expecteds) is list:
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        for (b, expected, dev) in expecteds:
            if b:
                opts.stats_range_fields[field] = (expected, dev)
                return
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        framework_warn(name, 'numfield-no-expected', 'No expected value found for ' + field + ' in num_field check')
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    else:
        (expected, dev) = expecteds
        opts.stats_range_fields[field] = (expected, dev)
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def compiler_stats_num_field( field, expecteds ):
    return lambda name, opts, f=field, e=expecteds: _compiler_stats_num_field(name, opts, f, e);
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def _compiler_stats_num_field( name, opts, field, expecteds ):
    if field in opts.compiler_stats_range_fields:
        framework_fail(name, 'duplicate-numfield', 'Duplicate ' + field + ' num_field check')

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    # Compiler performance numbers change when debugging is on, making the results
    # useless and confusing. Therefore, skip if debugging is on.
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    if compiler_debugged():
        skip(name, opts)

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    for (b, expected, dev) in expecteds:
        if b:
            opts.compiler_stats_range_fields[field] = (expected, dev)
            return
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    framework_warn(name, 'numfield-no-expected', 'No expected value found for ' + field + ' in num_field check')
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# -----

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def when(b, f):
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    # When list_brokens is on, we want to see all expect_broken calls,
    # so we always do f
    if b or config.list_broken:
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        return f
    else:
        return normal

def unless(b, f):
    return when(not b, f)

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def doing_ghci():
    return 'ghci' in config.run_ways

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def ghc_dynamic():
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    return config.ghc_dynamic
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def fast():
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    return config.speed == 2
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def platform( plat ):
    return config.platform == plat
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def opsys( os ):
    return config.os == os
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def arch( arch ):
    return config.arch == arch
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def wordsize( ws ):
    return config.wordsize == str(ws)
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def msys( ):
    return config.msys
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def cygwin( ):
    return config.cygwin
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def have_vanilla( ):
    return config.have_vanilla
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def have_dynamic( ):
    return config.have_dynamic
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def have_profiling( ):
    return config.have_profiling
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def in_tree_compiler( ):
    return config.in_tree_compiler
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def unregisterised( ):
    return config.unregisterised

def compiler_profiled( ):
    return config.compiler_profiled

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def compiler_debugged( ):
    return config.compiler_debugged
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# ---

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def high_memory_usage(name, opts):
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    opts.alone = True

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# If a test is for a multi-CPU race, then running the test alone
# increases the chance that we'll actually see it.
def multi_cpu_race(name, opts):
    opts.alone = True

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# ---
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def literate( name, opts ):
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    opts.literate = 1;

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def c_src( name, opts ):
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    opts.c_src = 1;

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def objc_src( name, opts ):
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    opts.objc_src = 1;

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def objcpp_src( name, opts ):
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    opts.objcpp_src = 1;

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def cmm_src( name, opts ):
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    opts.cmm_src = 1;

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def outputdir( odir ):
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    return lambda name, opts, d=odir: _outputdir(name, opts, d)
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def _outputdir( name, opts, odir ):
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    opts.outputdir = odir;

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# ----

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def pre_cmd( cmd ):
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    return lambda name, opts, c=cmd: _pre_cmd(name, opts, cmd)
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def _pre_cmd( name, opts, cmd ):
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    opts.pre_cmd = cmd

# ----

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def clean_cmd( cmd ):
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    # TODO. Remove all calls to clean_cmd.
    return lambda _name, _opts: None
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# ----

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def cmd_prefix( prefix ):
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    return lambda name, opts, p=prefix: _cmd_prefix(name, opts, prefix)
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def _cmd_prefix( name, opts, prefix ):
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    opts.cmd_wrapper = lambda cmd, p=prefix: p + ' ' + cmd;

# ----

def cmd_wrapper( fun ):
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    return lambda name, opts, f=fun: _cmd_wrapper(name, opts, fun)
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def _cmd_wrapper( name, opts, fun ):
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    opts.cmd_wrapper = fun
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# ----

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def compile_cmd_prefix( prefix ):
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    return lambda name, opts, p=prefix: _compile_cmd_prefix(name, opts, prefix)
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def _compile_cmd_prefix( name, opts, prefix ):
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    opts.compile_cmd_prefix = prefix

# ----

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def check_stdout( f ):
    return lambda name, opts, f=f: _check_stdout(name, opts, f)

def _check_stdout( name, opts, f ):
    opts.check_stdout = f

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def no_check_hp(name, opts):
    opts.check_hp = False

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# ----

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def filter_stdout_lines( regex ):
    """ Filter lines of stdout with the given regular expression """
    import re
    def f( name, opts ):
        _normalise_fun(name, opts, lambda s: '\n'.join(re.findall(regex, s)))
    return f

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def normalise_slashes( name, opts ):
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    _normalise_fun(name, opts, normalise_slashes_)
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def normalise_exe( name, opts ):
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    _normalise_fun(name, opts, normalise_exe_)
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def normalise_fun( *fs ):
    return lambda name, opts: _normalise_fun(name, opts, fs)
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def _normalise_fun( name, opts, *fs ):
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    opts.extra_normaliser = join_normalisers(opts.extra_normaliser, fs)
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def normalise_errmsg_fun( *fs ):
    return lambda name, opts: _normalise_errmsg_fun(name, opts, fs)
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def _normalise_errmsg_fun( name, opts, *fs ):
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    opts.extra_errmsg_normaliser =  join_normalisers(opts.extra_errmsg_normaliser, fs)

def normalise_version_( *pkgs ):
    def normalise_version__( str ):
        return re.sub('(' + '|'.join(map(re.escape,pkgs)) + ')-[0-9.]+',
                      '\\1-<VERSION>', str)
    return normalise_version__

def normalise_version( *pkgs ):
    def normalise_version__( name, opts ):
        _normalise_fun(name, opts, normalise_version_(*pkgs))
        _normalise_errmsg_fun(name, opts, normalise_version_(*pkgs))
    return normalise_version__
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def normalise_drive_letter(name, opts):
    # Windows only. Change D:\\ to C:\\.
    _normalise_fun(name, opts, lambda str: re.sub(r'[A-Z]:\\', r'C:\\', str))

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def keep_prof_callstacks(name, opts):
    """Keep profiling callstacks.

    Use together with `only_ways(prof_ways)`.
    """
    opts.keep_prof_callstacks = True

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def join_normalisers(*a):
    """
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    Compose functions, flattening sequences.
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       join_normalisers(f1,[f2,f3],f4)
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    is the same as

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       lambda x: f1(f2(f3(f4(x))))
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    """

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    def flatten(l):
        """
        Taken from http://stackoverflow.com/a/2158532/946226
        """
        for el in l:
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            if (isinstance(el, collections.Iterable)
                and not isinstance(el, (bytes, str))):
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                for sub in flatten(el):
                    yield sub
            else:
                yield el

    a = flatten(a)
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    fn = lambda x:x # identity function
    for f in a:
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        assert callable(f)
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        fn = lambda x,f=f,fn=fn: fn(f(x))
    return fn

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# ----
# Function for composing two opt-fns together

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def executeSetups(fs, name, opts):
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    if type(fs) is list:
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        # If we have a list of setups, then execute each one
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        for f in fs:
            executeSetups(f, name, opts)
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    else:
        # fs is a single function, so just apply it
        fs(name, opts)
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# -----------------------------------------------------------------------------
# The current directory of tests

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def newTestDir(tempdir, dir):

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    global thisdir_settings
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    # reset the options for this test directory
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    def settings(name, opts, tempdir=tempdir, dir=dir):
        return _newTestDir(name, opts, tempdir, dir)
    thisdir_settings = settings
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# Should be equal to entry in toplevel .gitignore.
testdir_suffix = '.run'
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def _newTestDir(name, opts, tempdir, dir):
    opts.srcdir = os.path.join(os.getcwd(), dir)
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    opts.testdir = os.path.join(tempdir, dir, name + testdir_suffix)
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    opts.compiler_always_flags = config.compiler_always_flags
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# -----------------------------------------------------------------------------
# Actually doing tests

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parallelTests = []
aloneTests = []
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allTestNames = set([])
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def runTest(watcher, opts, name, func, args):
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    if config.use_threads:
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        pool_sema.acquire()
        t = threading.Thread(target=test_common_thread,
                             name=name,
                             args=(watcher, name, opts, func, args))
        t.daemon = False
        t.start()
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    else:
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        test_common_work(watcher, name, opts, func, args)
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# name  :: String
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# setup :: TestOpts -> IO ()
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def test(name, setup, func, args):
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    global aloneTests
    global parallelTests
    global allTestNames
    global thisdir_settings
    if name in allTestNames:
        framework_fail(name, 'duplicate', 'There are multiple tests with this name')
    if not re.match('^[0-9]*[a-zA-Z][a-zA-Z0-9._-]*$', name):
        framework_fail(name, 'bad_name', 'This test has an invalid name')

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    if config.run_only_some_tests:
        if name not in config.only:
            return
        else:
            # Note [Mutating config.only]
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            # config.only is initially the set of tests requested by
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            # the user (via 'make TEST='). We then remove all tests that
            # we've already seen (in .T files), so that we can later
            # report on any tests we couldn't find and error out.
            config.only.remove(name)
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    # Make a deep copy of the default_testopts, as we need our own copy
    # of any dictionaries etc inside it. Otherwise, if one test modifies
    # them, all tests will see the modified version!
    myTestOpts = copy.deepcopy(default_testopts)
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    executeSetups([thisdir_settings, setup], name, myTestOpts)
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    thisTest = lambda watcher: runTest(watcher, myTestOpts, name, func, args)
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    if myTestOpts.alone:
        aloneTests.append(thisTest)
    else:
        parallelTests.append(thisTest)
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    allTestNames.add(name)
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if config.use_threads:
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    def test_common_thread(watcher, name, opts, func, args):
            try:
                test_common_work(watcher, name, opts, func, args)
            finally:
                pool_sema.release()
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def get_package_cache_timestamp():
    if config.package_conf_cache_file == '':
        return 0.0
    else:
        try:
            return os.stat(config.package_conf_cache_file).st_mtime
        except:
            return 0.0

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do_not_copy = ('.hi', '.o', '.dyn_hi', '.dyn_o', '.out') # 12112
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def test_common_work(watcher, name, opts, func, args):
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    try:
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        t.total_tests += 1
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        setLocalTestOpts(opts)

        package_conf_cache_file_start_timestamp = get_package_cache_timestamp()

        # All the ways we might run this test
        if func == compile or func == multimod_compile:
            all_ways = config.compile_ways
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        elif func == compile_and_run or func == multimod_compile_and_run:
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            all_ways = config.run_ways
        elif func == ghci_script:
            if 'ghci' in config.run_ways:
                all_ways = ['ghci']
            else:
                all_ways = []
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        else:
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            all_ways = ['normal']

        # A test itself can request extra ways by setting opts.extra_ways
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        all_ways = all_ways + [way for way in opts.extra_ways if way not in all_ways]
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        t.total_test_cases += len(all_ways)
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        ok_way = lambda way: \
            not getTestOpts().skip \
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            and (getTestOpts().only_ways == None or way in getTestOpts().only_ways) \
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            and (config.cmdline_ways == [] or way in config.cmdline_ways) \
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            and (not (config.skip_perf_tests and isStatsTest())) \
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            and way not in getTestOpts().omit_ways

        # Which ways we are asked to skip
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        do_ways = list(filter (ok_way,all_ways))
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        # Only run all ways in slow mode.
        # See Note [validate and testsuite speed] in toplevel Makefile.
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        if config.accept:
            # Only ever run one way
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            do_ways = do_ways[:1]
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        elif config.speed > 0:
            # However, if we EXPLICITLY asked for a way (with extra_ways)
            # please test it!
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            explicit_ways = list(filter(lambda way: way in opts.extra_ways, do_ways))
            other_ways = list(filter(lambda way: way not in opts.extra_ways, do_ways))
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            do_ways = other_ways[:1] + explicit_ways
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        # Find all files in the source directory that this test
        # depends on. Do this only once for all ways.
        # Generously add all filenames that start with the name of
        # the test to this set, as a convenience to test authors.
        # They will have to use the `extra_files` setup function to
        # specify all other files that their test depends on (but
        # this seems to be necessary for only about 10% of all
        # tests).
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        files = set(f for f in os.listdir(opts.srcdir)
                       if f.startswith(name) and not f == name and
                          not f.endswith(testdir_suffix) and
                          not os.path.splitext(f)[1] in do_not_copy)
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        for filename in (opts.extra_files + extra_src_files.get(name, [])):
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            if filename.startswith('/'):
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                framework_fail(name, 'whole-test',
                    'no absolute paths in extra_files please: ' + filename)

            elif '*' in filename:
                # Don't use wildcards in extra_files too much, as
                # globbing is slow.
                files.update((os.path.relpath(f, opts.srcdir)
                            for f in glob.iglob(in_srcdir(filename))))

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            elif filename:
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                files.add(filename)

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            else:
                framework_fail(name, 'whole-test', 'extra_file is empty string')

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        # Run the required tests...
        for way in do_ways:
            if stopping():
                break
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            try:
                do_test(name, way, func, args, files)
            except KeyboardInterrupt:
                stopNow()
            except Exception as e:
                framework_fail(name, way, str(e))
                traceback.print_exc()
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        t.n_tests_skipped += len(set(all_ways) - set(do_ways))
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        if config.cleanup and do_ways:
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            try:
                cleanup()
            except Exception as e:
                framework_fail(name, 'runTest', 'Unhandled exception during cleanup: ' + str(e))
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        package_conf_cache_file_end_timestamp = get_package_cache_timestamp();
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        if package_conf_cache_file_start_timestamp != package_conf_cache_file_end_timestamp:
            framework_fail(name, 'whole-test', 'Package cache timestamps do not match: ' + str(package_conf_cache_file_start_timestamp) + ' ' + str(package_conf_cache_file_end_timestamp))
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    except Exception as e:
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        framework_fail(name, 'runTest', 'Unhandled exception: ' + str(e))
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    finally:
        watcher.notify()
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def do_test(name, way, func, args, files):
    opts = getTestOpts()

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    full_name = name + '(' + way + ')'

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    if_verbose(2, "=====> {0} {1} of {2} {3}".format(
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        full_name, t.total_tests, len(allTestNames), 
        [len(t.unexpected_passes),
         len(t.unexpected_failures),
         len(t.framework_failures)]))
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    # Clean up prior to the test, so that we can't spuriously conclude
    # that it passed on the basis of old run outputs.
    cleanup()
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    os.makedirs(opts.testdir)
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    # Link all source files for this test into a new directory in
    # /tmp, and run the test in that directory. This makes it
    # possible to run tests in parallel, without modification, that
    # would otherwise (accidentally) write to the same output file.
    # It also makes it easier to keep the testsuite clean.

    for extra_file in files:
        src = in_srcdir(extra_file)
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        dst = in_testdir(os.path.basename(extra_file.rstrip('/\\')))
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        if os.path.isfile(src):
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            link_or_copy_file(src, dst)
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        elif os.path.isdir(src):
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            os.mkdir(dst)
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            lndir(src, dst)
        else:
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            if not config.haddock and os.path.splitext(extra_file)[1] == '.t':
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                # When using a ghc built without haddock support, .t
                # files are rightfully missing. Don't
                # framework_fail. Test will be skipped later.
                pass
            else:
                framework_fail(name, way,
                    'extra_file does not exist: ' + extra_file)

    if func.__name__ == 'run_command' or opts.pre_cmd:
        # When running 'MAKE' make sure 'TOP' still points to the
        # root of the testsuite.
        src_makefile = in_srcdir('Makefile')
        dst_makefile = in_testdir('Makefile')
        if os.path.exists(src_makefile):
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            with io.open(src_makefile, 'r', encoding='utf8') as src:
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                makefile = re.sub('TOP=.*', 'TOP=' + config.top, src.read(), 1)
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