Exemple #1
0
def run_wasm_merge_tests():
    print '\n[ checking wasm-merge... ]\n'

    test_dir = os.path.join(options.binaryen_test, 'merge')
    for t in os.listdir(test_dir):
        if t.endswith(('.wast', '.wasm')):
            print '..', t
            t = os.path.join(test_dir, t)
            u = t + '.toMerge'
            for finalize in [0, 1]:
                for opt in [0, 1]:
                    cmd = WASM_MERGE + [
                        t, u, '-o', 'a.wast', '-S', '--verbose'
                    ]
                    if finalize:
                        cmd += [
                            '--finalize-memory-base=1024',
                            '--finalize-table-base=8'
                        ]
                    if opt: cmd += ['-O']
                    stdout = run_command(cmd)
                    actual = open('a.wast').read()
                    out = t + '.combined'
                    if finalize: out += '.finalized'
                    if opt: out += '.opt'
                    with open(out) as f:
                        fail_if_not_identical(f.read(), actual)
                    with open(out + '.stdout') as f:
                        fail_if_not_identical(f.read(), stdout)
Exemple #2
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def run_ctor_eval_tests():
    print '\n[ checking wasm-ctor-eval... ]\n'

    for t in os.listdir(os.path.join('test', 'ctor-eval')):
        if t.endswith(('.wast', '.wasm')):
            print '..', t
            t = os.path.join('test', 'ctor-eval', t)
            ctors = open(t + '.ctors').read().strip()
            cmd = WASM_CTOR_EVAL + [t, '-o', 'a.wast', '-S', '--ctors', ctors]
            stdout = run_command(cmd)
            actual = open('a.wast').read()
            out = t + '.out'
            with open(out) as f:
                fail_if_not_identical(f.read(), actual)
Exemple #3
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def run_wasm_reduce_tests():
  print '\n[ checking wasm-reduce ]\n'

  for t in os.listdir(os.path.join('test', 'reduce')):
    if t.endswith('.wast'):
      print '..', t
      t = os.path.join('test', 'reduce', t)
      # convert to wasm
      run_command(WASM_AS + [t, '-o', 'a.wasm'])
      print run_command(WASM_REDUCE + ['a.wasm', '--command=%s b.wasm --fuzz-exec' % WASM_OPT[0], '-t', 'b.wasm', '-w', 'c.wasm'])
      expected = t + '.txt'
      run_command(WASM_DIS + ['c.wasm', '-o', 'a.wast'])
      with open('a.wast') as seen:
        with open(expected) as correct:
          fail_if_not_identical(seen.read(), correct.read())
Exemple #4
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def run_wasm_metadce_tests():
  print '\n[ checking wasm-metadce ]\n'

  for t in os.listdir(os.path.join('test', 'metadce')):
    if t.endswith(('.wast', '.wasm')):
      print '..', t
      t = os.path.join('test', 'metadce', t)
      graph = t + '.graph.txt'
      cmd = WASM_METADCE + [t, '--graph-file=' + graph, '-o', 'a.wast', '-S']
      stdout = run_command(cmd)
      expected = t + '.dced'
      with open('a.wast') as seen:
        with open(expected) as correct:
          fail_if_not_identical(seen.read(), correct.read())
      with open(expected + '.stdout') as correct:
        fail_if_not_identical(stdout, correct.read())
Exemple #5
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def run_wasm_opt_tests():
    print '\n[ checking wasm-opt -o notation... ]\n'

    for extra_args in [[], ['--no-validation']]:
        wast = os.path.join(options.binaryen_test, 'hello_world.wast')
        delete_from_orbit('a.wast')
        cmd = WASM_OPT + [wast, '-o', 'a.wast', '-S'] + extra_args
        run_command(cmd)
        fail_if_not_identical_to_file(open('a.wast').read(), wast)

    print '\n[ checking wasm-opt binary reading/writing... ]\n'

    shutil.copyfile(os.path.join(options.binaryen_test, 'hello_world.wast'),
                    'a.wast')
    delete_from_orbit('a.wasm')
    delete_from_orbit('b.wast')
    run_command(WASM_OPT + ['a.wast', '-o', 'a.wasm'])
    assert open('a.wasm', 'rb').read()[0] == '\0', 'we emit binary by default'
    run_command(WASM_OPT + ['a.wasm', '-o', 'b.wast', '-S'])
    assert open('b.wast', 'rb').read()[0] != '\0', 'we emit text with -S'

    print '\n[ checking wasm-opt passes... ]\n'

    for t in sorted(os.listdir(os.path.join(options.binaryen_test, 'passes'))):
        if t.endswith(('.wast', '.wasm')):
            print '..', t
            binary = '.wasm' in t
            base = os.path.basename(t).replace('.wast',
                                               '').replace('.wasm', '')
            passname = base
            if passname.isdigit():
                passname = open(
                    os.path.join(options.binaryen_test, 'passes',
                                 passname + '.passes')).read().strip()
            opts = [('--' + p if not p.startswith('O') else '-' + p)
                    for p in passname.split('_')]
            t = os.path.join(options.binaryen_test, 'passes', t)
            actual = ''
            for module, asserts in split_wast(t):
                assert len(asserts) == 0
                with open('split.wast', 'w') as o:
                    o.write(module)
                cmd = WASM_OPT + opts + ['split.wast', '--print']
                curr = run_command(cmd)
                actual += curr
                # also check debug mode output is valid
                debugged = run_command(cmd + ['--debug'],
                                       stderr=subprocess.PIPE)
                fail_if_not_contained(actual, debugged)

                # also check pass-debug mode
                def check():
                    pass_debug = run_command(cmd)
                    fail_if_not_identical(curr, pass_debug)

                with_pass_debug(check)

            expected_file = os.path.join(
                options.binaryen_test, 'passes',
                base + ('.bin' if binary else '') + '.txt')
            fail_if_not_identical_to_file(actual, expected_file)

            if 'emit-js-wrapper' in t:
                with open('a.js') as actual:
                    fail_if_not_identical_to_file(actual.read(), t + '.js')
            if 'emit-spec-wrapper' in t:
                with open('a.wat') as actual:
                    fail_if_not_identical_to_file(actual.read(), t + '.wat')

    print '\n[ checking wasm-opt parsing & printing... ]\n'

    for t in sorted(os.listdir(os.path.join(options.binaryen_test, 'print'))):
        if t.endswith('.wast'):
            print '..', t
            wasm = os.path.basename(t).replace('.wast', '')
            cmd = WASM_OPT + [
                os.path.join(options.binaryen_test, 'print', t), '--print'
            ]
            print '    ', ' '.join(cmd)
            actual, err = subprocess.Popen(
                cmd, stdout=subprocess.PIPE,
                stderr=subprocess.PIPE).communicate()
            expected_file = os.path.join(options.binaryen_test, 'print',
                                         wasm + '.txt')
            fail_if_not_identical_to_file(actual, expected_file)
            cmd = WASM_OPT + [
                os.path.join(options.binaryen_test, 'print', t),
                '--print-minified'
            ]
            print '    ', ' '.join(cmd)
            actual, err = subprocess.Popen(
                cmd, stdout=subprocess.PIPE,
                stderr=subprocess.PIPE).communicate()
            fail_if_not_identical(
                actual.strip(),
                open(
                    os.path.join(options.binaryen_test, 'print',
                                 wasm + '.minified.txt')).read().strip())

    print '\n[ checking wasm-opt testcases... ]\n'

    for t in tests:
        if t.endswith('.wast') and not t.startswith('spec'):
            print '..', t
            t = os.path.join(options.binaryen_test, t)
            f = t + '.from-wast'
            cmd = WASM_OPT + [t, '--print']
            actual = run_command(cmd)
            actual = actual.replace('printing before:\n', '')

            fail_if_not_identical_to_file(actual, f)

            binary_format_check(t, wasm_as_args=['-g'])  # test with debuginfo
            binary_format_check(t,
                                wasm_as_args=[],
                                binary_suffix='.fromBinary.noDebugInfo'
                                )  # test without debuginfo

            minify_check(t)
Exemple #6
0
 def check():
     pass_debug = run_command(cmd)
     fail_if_not_identical(curr, pass_debug)
Exemple #7
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def run_wasm_opt_tests():
    print('\n[ checking wasm-opt -o notation... ]\n')

    for extra_args in [[], ['--no-validation']]:
        wast = os.path.join(shared.options.binaryen_test, 'hello_world.wat')
        shared.delete_from_orbit('a.wat')
        out = 'a.wat'
        cmd = shared.WASM_OPT + [wast, '-o', out, '-S'] + extra_args
        support.run_command(cmd)
        shared.fail_if_not_identical_to_file(open(out).read(), wast)

    print('\n[ checking wasm-opt binary reading/writing... ]\n')

    shutil.copyfile(
        os.path.join(shared.options.binaryen_test, 'hello_world.wat'), 'a.wat')
    shared.delete_from_orbit('a.wasm')
    shared.delete_from_orbit('b.wast')
    support.run_command(shared.WASM_OPT + ['a.wat', '-o', 'a.wasm'])
    assert open('a.wasm', 'rb').read()[0] == 0, 'we emit binary by default'
    support.run_command(shared.WASM_OPT + ['a.wasm', '-o', 'b.wast', '-S'])
    assert open('b.wast', 'rb').read()[0] != 0, 'we emit text with -S'

    print('\n[ checking wasm-opt passes... ]\n')

    for t in shared.get_tests(shared.get_test_dir('passes'),
                              ['.wast', '.wasm']):
        print('..', os.path.basename(t))
        binary = '.wasm' in t
        base = os.path.basename(t).replace('.wast', '').replace('.wasm', '')
        passname = base
        passes_file = os.path.join(shared.get_test_dir('passes'),
                                   passname + '.passes')
        if os.path.exists(passes_file):
            passname = open(passes_file).read().strip()
        opts = [('--' + p if not p.startswith('O') and p != 'g' else '-' + p)
                for p in passname.split('_')]
        actual = ''
        for module, asserts in support.split_wast(t):
            assert len(asserts) == 0
            support.write_wast('split.wast', module)
            cmd = shared.WASM_OPT + opts + ['split.wast', '--print']
            curr = support.run_command(cmd)
            actual += curr
            # also check debug mode output is valid
            debugged = support.run_command(cmd + ['--debug'],
                                           stderr=subprocess.PIPE)
            shared.fail_if_not_contained(actual, debugged)

            # also check pass-debug mode
            def check():
                pass_debug = support.run_command(cmd)
                shared.fail_if_not_identical(curr, pass_debug)

            shared.with_pass_debug(check)

        expected_file = os.path.join(
            shared.get_test_dir('passes'),
            base + ('.bin' if binary else '') + '.txt')
        shared.fail_if_not_identical_to_file(actual, expected_file)

        if 'emit-js-wrapper' in t:
            with open('a.js') as actual:
                shared.fail_if_not_identical_to_file(actual.read(), t + '.js')
        if 'emit-spec-wrapper' in t:
            with open('a.wat') as actual:
                shared.fail_if_not_identical_to_file(actual.read(), t + '.wat')

    print('\n[ checking wasm-opt parsing & printing... ]\n')

    for t in shared.get_tests(shared.get_test_dir('print'), ['.wast']):
        print('..', os.path.basename(t))
        wasm = os.path.basename(t).replace('.wast', '')
        cmd = shared.WASM_OPT + [t, '--print', '-all']
        print('    ', ' '.join(cmd))
        actual, err = subprocess.Popen(cmd,
                                       stdout=subprocess.PIPE,
                                       stderr=subprocess.PIPE,
                                       universal_newlines=True).communicate()
        expected_file = os.path.join(shared.get_test_dir('print'),
                                     wasm + '.txt')
        shared.fail_if_not_identical_to_file(actual, expected_file)
        cmd = shared.WASM_OPT + [
            os.path.join(shared.get_test_dir('print'), t), '--print-minified',
            '-all'
        ]
        print('    ', ' '.join(cmd))
        actual, err = subprocess.Popen(cmd,
                                       stdout=subprocess.PIPE,
                                       stderr=subprocess.PIPE,
                                       universal_newlines=True).communicate()
        shared.fail_if_not_identical(
            actual.strip(),
            open(
                os.path.join(shared.get_test_dir('print'),
                             wasm + '.minified.txt')).read().strip())

    print('\n[ checking wasm-opt testcases... ]\n')

    for t in shared.get_tests(shared.options.binaryen_test, ['.wast']):
        print('..', os.path.basename(t))
        f = t + '.from-wast'
        cmd = shared.WASM_OPT + [t, '--print', '-all']
        actual = support.run_command(cmd)
        actual = actual.replace('printing before:\n', '')

        shared.fail_if_not_identical_to_file(actual, f)

        # FIXME Remove this condition after nullref is implemented in V8
        if 'reference-types.wast' not in t:
            shared.binary_format_check(t,
                                       wasm_as_args=['-g'
                                                     ])  # test with debuginfo
            shared.binary_format_check(t,
                                       wasm_as_args=[],
                                       binary_suffix='.fromBinary.noDebugInfo'
                                       )  # test without debuginfo

        shared.minify_check(t)

    print('\n[ checking wasm-opt debugInfo read-write... ]\n')

    for t in shared.get_tests(shared.options.binaryen_test, ['.fromasm']):
        if 'debugInfo' not in t:
            continue
        print('..', os.path.basename(t))
        f = t + '.read-written'
        support.run_command(shared.WASM_AS +
                            [t, '--source-map=a.map', '-o', 'a.wasm', '-g'])
        support.run_command(shared.WASM_OPT + [
            'a.wasm', '--input-source-map=a.map', '-o', 'b.wasm',
            '--output-source-map=b.map', '-g'
        ])
        actual = support.run_command(shared.WASM_DIS +
                                     ['b.wasm', '--source-map=b.map'])
        shared.fail_if_not_identical_to_file(actual, f)
Exemple #8
0
 def check():
     pass_debug = support.run_command(cmd)
     shared.fail_if_not_identical(curr, pass_debug)
Exemple #9
0
        [os.path.join(options.binaryen_bin, e), '--help'],
        stdout=subprocess.PIPE,
        stderr=subprocess.PIPE).communicate()
    assert len(out) == 0, 'Expected no stdout, got:\n%s' % out
    assert e.replace(
        '.exe',
        '') in err, 'Expected help to contain program name, got:\n%s' % err
    assert len(err.split('\n')) > 8, 'Expected some help, got:\n%s' % err

print '\n[ checking wasm-opt -o notation... ]\n'

wast = os.path.join(options.binaryen_test, 'hello_world.wast')
delete_from_orbit('a.wast')
cmd = WASM_OPT + [wast, '-o', 'a.wast', '-S']
run_command(cmd)
fail_if_not_identical(open('a.wast').read(), open(wast).read())

print '\n[ checking wasm-opt binary reading/writing... ]\n'

shutil.copyfile(os.path.join(options.binaryen_test, 'hello_world.wast'),
                'a.wast')
delete_from_orbit('a.wasm')
delete_from_orbit('b.wast')
run_command(WASM_OPT + ['a.wast', '-o', 'a.wasm'])
assert open('a.wasm', 'rb').read()[0] == '\0', 'we emit binary by default'
run_command(WASM_OPT + ['a.wasm', '-o', 'b.wast', '-S'])
assert open('b.wast', 'rb').read()[0] != '\0', 'we emit text with -S'

print '\n[ checking wasm-opt passes... ]\n'

for t in sorted(os.listdir(os.path.join(options.binaryen_test, 'passes'))):
Exemple #10
0
        [os.path.join(options.binaryen_bin, e), '--help'],
        stdout=subprocess.PIPE,
        stderr=subprocess.PIPE).communicate()
    assert len(out) == 0, 'Expected no stdout, got:\n%s' % out
    assert e.replace(
        '.exe',
        '') in err, 'Expected help to contain program name, got:\n%s' % err
    assert len(err.split('\n')) > 8, 'Expected some help, got:\n%s' % err

print '\n[ checking wasm-opt -o notation... ]\n'

wast = os.path.join(options.binaryen_test, 'hello_world.wast')
delete_from_orbit('a.wast')
cmd = WASM_OPT + [wast, '-o', 'a.wast', '-S']
run_command(cmd)
fail_if_not_identical(open('a.wast').read(), open(wast).read())

print '\n[ checking wasm-opt binary reading/writing... ]\n'

shutil.copyfile(os.path.join(options.binaryen_test, 'hello_world.wast'),
                'a.wast')
delete_from_orbit('a.wasm')
delete_from_orbit('b.wast')
run_command(WASM_OPT + ['a.wast', '-o', 'a.wasm'])
assert open('a.wasm', 'rb').read()[0] == '\0', 'we emit binary by default'
run_command(WASM_OPT + ['a.wasm', '-o', 'b.wast', '-S'])
assert open('b.wast', 'rb').read()[0] != '\0', 'we emit text with -S'

print '\n[ checking wasm-opt passes... ]\n'

for t in sorted(os.listdir(os.path.join(options.binaryen_test, 'passes'))):
Exemple #11
0
def run_asm2wasm_tests():
    print '[ checking asm2wasm testcases... ]\n'

    for asm in tests:
        if asm.endswith('.asm.js'):
            for precise in [0, 1, 2]:
                for opts in [1, 0]:
                    cmd = ASM2WASM + [os.path.join(options.binaryen_test, asm)]
                    wasm = asm.replace('.asm.js', '.fromasm')
                    if not precise:
                        cmd += [
                            '--emit-potential-traps', '--ignore-implicit-traps'
                        ]
                        wasm += '.imprecise'
                    elif precise == 2:
                        cmd += ['--emit-clamped-potential-traps']
                        wasm += '.clamp'
                    if not opts:
                        wasm += '.no-opts'
                        if precise:
                            cmd += ['-O0']  # test that -O0 does nothing
                    else:
                        cmd += ['-O']
                    if 'debugInfo' in asm:
                        cmd += ['-g']
                    if 'noffi' in asm:
                        cmd += ['--no-legalize-javascript-ffi']
                    if precise and opts:
                        # test mem init importing
                        open('a.mem', 'wb').write(asm)
                        cmd += ['--mem-init=a.mem']
                        if asm[0] == 'e':
                            cmd += ['--mem-base=1024']
                    if 'i64' in asm or 'wasm-only' in asm or 'noffi' in asm:
                        cmd += ['--wasm-only']
                    wasm = os.path.join(options.binaryen_test, wasm)
                    print '..', asm, wasm

                    def do_asm2wasm_test():
                        actual = run_command(cmd)

                        # verify output
                        if not os.path.exists(wasm):
                            fail_with_error(
                                'output .wast file %s does not exist' % wasm)
                        expected = open(wasm, 'rb').read()
                        if actual != expected:
                            fail(actual, expected)

                        binary_format_check(wasm, verify_final_result=False)

                    # test both normally and with pass debug (so each inter-pass state is validated)
                    old_pass_debug = os.environ.get('BINARYEN_PASS_DEBUG')
                    try:
                        os.environ['BINARYEN_PASS_DEBUG'] = '1'
                        do_asm2wasm_test()
                        del os.environ['BINARYEN_PASS_DEBUG']
                        do_asm2wasm_test()
                    finally:
                        if old_pass_debug is not None:
                            os.environ['BINARYEN_PASS_DEBUG'] = old_pass_debug
                        else:
                            if 'BINARYEN_PASS_DEBUG' in os.environ:
                                del os.environ['BINARYEN_PASS_DEBUG']

                    # verify in wasm
                    if options.interpreter:
                        # remove imports, spec interpreter doesn't know what to do with them
                        subprocess.check_call(WASM_OPT +
                                              ['--remove-imports', wasm],
                                              stdout=open('ztemp.wast', 'w'),
                                              stderr=subprocess.PIPE)
                        proc = subprocess.Popen(
                            [options.interpreter, 'ztemp.wast'],
                            stderr=subprocess.PIPE)
                        out, err = proc.communicate()
                        if proc.returncode != 0:
                            try:  # to parse the error
                                reported = err.split(':')[1]
                                start, end = reported.split('-')
                                start_line, start_col = map(
                                    int, start.split('.'))
                                lines = open('ztemp.wast').read().split('\n')
                                print
                                print '=' * 80
                                print lines[start_line - 1]
                                print(' ' * (start_col - 1)) + '^'
                                print(' ' * (start_col - 2)) + '/_\\'
                                print '=' * 80
                                print err
                            except Exception, e:
                                fail_with_error('wasm interpreter error: ' +
                                                err)  # failed to pretty-print
                            fail_with_error('wasm interpreter error')

                    # verify debug info
                    if 'debugInfo' in asm:
                        jsmap = 'a.wasm.map'
                        cmd += [
                            '--source-map', jsmap, '--source-map-url',
                            'http://example.org/' + jsmap, '-o', 'a.wasm'
                        ]
                        run_command(cmd)
                        if not os.path.isfile(jsmap):
                            fail_with_error('Debug info map not created: %s' %
                                            jsmap)
                        with open(wasm + '.map', 'rb') as expected:
                            with open(jsmap, 'rb') as actual:
                                fail_if_not_identical(actual.read(),
                                                      expected.read())
                        with open('a.wasm', 'rb') as binary:
                            url_section_name = bytearray(
                                [16]) + bytearray('sourceMappingURL')
                            payload = 'http://example.org/' + jsmap
                            assert len(payload) < 256, 'name too long'
                            url_section_contents = bytearray(
                                [len(payload)]) + bytearray(payload)
                            print url_section_name
                            binary_contents = bytearray(binary.read())
                            if url_section_name not in binary_contents:
                                fail_with_error(
                                    'source map url section not found in binary'
                                )
                            if url_section_contents not in binary_contents[
                                    binary_contents.index(url_section_name):]:
                                fail_with_error(
                                    'source map url not found in url section')
Exemple #12
0
def test_wasm2js_output():
    for opt in (0, 1):
        for t in tests + spec_tests + wasm2js_tests:
            basename = os.path.basename(t)
            if basename in wasm2js_blacklist:
                continue

            asm = basename.replace('.wast', '.2asm.js')
            expected_file = os.path.join(shared.get_test_dir('wasm2js'), asm)
            if opt:
                expected_file += '.opt'

            if not os.path.exists(expected_file):
                continue

            print('..', os.path.basename(t))

            all_out = []

            for module, asserts in support.split_wast(t):
                support.write_wast('split.wast', module, asserts)

                cmd = shared.WASM2JS + ['split.wast', '-all']
                if opt:
                    cmd += ['-O']
                if 'emscripten' in t:
                    cmd += ['--emscripten']
                out = support.run_command(cmd)
                all_out.append(out)

                if not shared.NODEJS and not shared.MOZJS:
                    print('No JS interpreters. Skipping spec tests.')
                    continue

                open('a.2asm.mjs', 'w').write(out)

                cmd += ['--allow-asserts']
                out = support.run_command(cmd)
                # also verify it passes pass-debug verifications
                shared.with_pass_debug(lambda: support.run_command(cmd))

                open('a.2asm.asserts.mjs', 'w').write(out)

                # verify asm.js is valid js, note that we're using --experimental-modules
                # to enable ESM syntax and we're also passing a custom loader to handle the
                # `spectest` and `env` modules in our tests.
                if shared.NODEJS:
                    loader = os.path.join(shared.options.binaryen_root,
                                          'scripts', 'test',
                                          'node-esm-loader.mjs')
                    node = [
                        shared.NODEJS, '--experimental-modules', '--loader',
                        loader
                    ]
                    cmd = node[:]
                    cmd.append('a.2asm.mjs')
                    out = support.run_command(cmd)
                    shared.fail_if_not_identical(out, '')
                    cmd = node[:]
                    cmd.append('a.2asm.asserts.mjs')
                    out = support.run_command(cmd,
                                              expected_err='',
                                              err_ignore='ExperimentalWarning')
                    shared.fail_if_not_identical(out, '')

            shared.fail_if_not_identical_to_file(''.join(all_out),
                                                 expected_file)
Exemple #13
0
for e in executables:
  print '.. %s --help' % e
  out, err = subprocess.Popen([os.path.join(options.binaryen_bin, e), '--help'],
                              stdout=subprocess.PIPE,
                              stderr=subprocess.PIPE).communicate()
  assert len(out) == 0, 'Expected no stdout, got:\n%s' % out
  assert e.replace('.exe', '') in err, 'Expected help to contain program name, got:\n%s' % err
  assert len(err.split('\n')) > 8, 'Expected some help, got:\n%s' % err

print '\n[ checking wasm-opt -o notation... ]\n'

wast = os.path.join(options.binaryen_test, 'hello_world.wast')
delete_from_orbit('a.wast')
cmd = WASM_OPT + [wast, '-o', 'a.wast']
run_command(cmd)
fail_if_not_identical(open('a.wast').read(), open(wast).read())

print '\n[ checking wasm-opt passes... ]\n'

for t in sorted(os.listdir(os.path.join(options.binaryen_test, 'passes'))):
  if t.endswith('.wast'):
    print '..', t
    passname = os.path.basename(t).replace('.wast', '')
    opts = ['-' + passname] if passname.startswith('O') else ['--' + p for p in passname.split('_')]
    t = os.path.join(options.binaryen_test, 'passes', t)
    actual = ''
    for module, asserts in split_wast(t):
      assert len(asserts) == 0
      with open('split.wast', 'w') as o: o.write(module)
      cmd = WASM_OPT + opts + ['split.wast', '--print']
      actual += run_command(cmd)