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wasm2js.py
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wasm2js.py
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# Copyright 2016 WebAssembly Community Group participants
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import os
from scripts.test import shared
from scripts.test import support
tests = shared.get_tests(shared.options.binaryen_test)
spec_tests = shared.options.spec_tests
spec_tests = [t for t in spec_tests if '.fail' not in t]
wasm2js_tests = shared.get_tests(shared.get_test_dir('wasm2js'), ['.wast'])
assert_tests = ['wasm2js.wast.asserts']
# These tests exercise functionality not supported by wasm2js
wasm2js_blacklist = ['empty_imported_table.wast']
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_js = []
all_out = ''
for module, asserts in support.split_wast(t):
support.write_wast('split.wast', module, asserts)
# wasm2js does not yet support EH, and enabling it can reduce
# optimization opportunities
cmd = shared.WASM2JS + ['split.wast', '-all',
'--disable-exception-handling']
if opt:
cmd += ['-O']
if 'emscripten' in t:
cmd += ['--emscripten']
if 'deterministic' in t:
cmd += ['--deterministic']
js = support.run_command(cmd)
all_js.append(js)
if not shared.NODEJS and not shared.MOZJS:
print('No JS interpreters. Skipping spec tests.')
continue
open('a.2asm.mjs', 'w').write(js)
cmd += ['--allow-asserts']
js = 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(js)
# 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', '--no-warnings', '--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')
all_out += out
shared.fail_if_not_identical_to_file(''.join(all_js), expected_file)
expected_out = os.path.join(shared.get_test_dir('spec'), 'expected-output', os.path.basename(t) + '.log')
if os.path.exists(expected_out):
expected_out = open(expected_out).read()
else:
expected_out = ''
shared.fail_if_not_identical(all_out, expected_out)
def test_asserts_output():
for wasm in assert_tests:
print('..', wasm)
asserts = os.path.basename(wasm).replace('.wast.asserts', '.asserts.js')
traps = os.path.basename(wasm).replace('.wast.asserts', '.traps.js')
asserts_expected_file = os.path.join(shared.options.binaryen_test, asserts)
traps_expected_file = os.path.join(shared.options.binaryen_test, traps)
wasm = os.path.join(shared.get_test_dir('wasm2js'), wasm)
cmd = shared.WASM2JS + [wasm, '--allow-asserts', '-all',
'--disable-exception-handling']
out = support.run_command(cmd)
shared.fail_if_not_identical_to_file(out, asserts_expected_file)
cmd += ['--pedantic']
out = support.run_command(cmd)
shared.fail_if_not_identical_to_file(out, traps_expected_file)
def test_wasm2js():
print('\n[ checking wasm2js testcases... ]\n')
test_wasm2js_output()
test_asserts_output()
def update_wasm2js_tests():
print('\n[ checking wasm2js ]\n')
for opt in (0, 1):
for wasm in tests + spec_tests + wasm2js_tests:
if not wasm.endswith('.wast'):
continue
if os.path.basename(wasm) in wasm2js_blacklist:
continue
asm = os.path.basename(wasm).replace('.wast', '.2asm.js')
expected_file = os.path.join(shared.get_test_dir('wasm2js'), asm)
if opt:
expected_file += '.opt'
# we run wasm2js on tests and spec tests only if the output
# exists - only some work so far. the tests in extra are in
# the test/wasm2js dir and so are specific to wasm2js, and
# we run all of those.
if wasm not in wasm2js_tests and not os.path.exists(expected_file):
continue
print('..', wasm)
t = os.path.join(shared.options.binaryen_test, wasm)
all_out = []
for module, asserts in support.split_wast(t):
support.write_wast('split.wast', module, asserts)
# wasm2js does not yet support EH, and enable it can reduce
# optimization opportunities
cmd = shared.WASM2JS + ['split.wast', '-all',
'--disable-exception-handling']
if opt:
cmd += ['-O']
if 'emscripten' in wasm:
cmd += ['--emscripten']
if 'deterministic' in t:
cmd += ['--deterministic']
out = support.run_command(cmd)
all_out.append(out)
with open(expected_file, 'w') as o:
o.write(''.join(all_out))
for wasm in assert_tests:
print('..', wasm)
asserts = os.path.basename(wasm).replace('.wast.asserts', '.asserts.js')
traps = os.path.basename(wasm).replace('.wast.asserts', '.traps.js')
asserts_expected_file = os.path.join(shared.options.binaryen_test, asserts)
traps_expected_file = os.path.join(shared.options.binaryen_test, traps)
cmd = shared.WASM2JS + [os.path.join(shared.get_test_dir('wasm2js'), wasm), '--allow-asserts', '-all', '--disable-exception-handling']
out = support.run_command(cmd)
with open(asserts_expected_file, 'w') as o:
o.write(out)
cmd += ['--pedantic']
out = support.run_command(cmd)
with open(traps_expected_file, 'w') as o:
o.write(out)