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import os
import unittest
from scripts.test.shared import WASM_OPT, run_process
from utils import input_path, roundtrip
class FeatureValidationTest(unittest.TestCase):
def check_feature(self, module, error, flag):
p = run_process(WASM_OPT + ['--mvp-features', '--print', '-o', os.devnull],
input=module, check=False, capture_output=True)
self.assertIn(error, p.stderr)
self.assertIn('Fatal: error in validating input', p.stderr)
self.assertNotEqual(p.returncode, 0)
p = run_process(WASM_OPT + ['--mvp-features', flag, '--print',
'-o', os.devnull],
input=module, check=False, capture_output=True)
self.assertEqual(p.returncode, 0)
def check_simd(self, module, error):
self.check_feature(module, error, '--enable-simd')
def check_sign_ext(self, module, error):
self.check_feature(module, error, '--enable-sign-ext')
def check_bulk_mem(self, module, error):
self.check_feature(module, error, '--enable-bulk-memory')
def test_v128_signature(self):
module = '''
(module
(func $foo (param $0 v128) (result v128)
(local.get $0)
)
)
'''
self.check_simd(module, 'all used types should be allowed')
def test_v128_global(self):
module = '''
(module
(global $foo (mut v128) (v128.const i32x4 0 0 0 0))
)
'''
self.check_simd(module, 'all used types should be allowed')
def test_v128_local(self):
module = '''
(module
(func $foo
(local v128)
)
)
'''
self.check_simd(module, 'all used types should be allowed')
def test_simd_const(self):
module = '''
(module
(func $foo
(drop (v128.const i32x4 0 0 0 0))
)
)
'''
self.check_simd(module, 'all used features should be allowed')
def test_simd_load(self):
module = '''
(module
(memory 1 1)
(func $foo
(drop (v128.load (i32.const 0)))
)
)
'''
self.check_simd(module, 'SIMD operation (SIMD is disabled)')
def test_simd_splat(self):
module = '''
(module
(func $foo
(drop (i32x4.splat (i32.const 0)))
)
)
'''
self.check_simd(module, 'all used features should be allowed')
def test_sign_ext(self):
module = '''
(module
(func $foo
(drop (i32.extend8_s (i32.const 7)))
)
)
'''
self.check_sign_ext(module, 'all used features should be allowed')
def test_bulk_mem_inst(self):
module = '''
(module
(memory 1 1)
(func $foo
(memory.copy (i32.const 0) (i32.const 8) (i32.const 8))
)
)
'''
self.check_bulk_mem(module,
'Bulk memory operation (bulk memory is disabled')
def test_bulk_mem_segment(self):
module = '''
(module
(memory 256 256)
(data passive "42")
)
'''
self.check_bulk_mem(module, 'nonzero segment flags (bulk memory is disabled)')
class TargetFeaturesSectionTest(unittest.TestCase):
def disassemble(self, filename):
path = input_path(filename)
p = run_process(WASM_OPT + ['--print', '-o', os.devnull, path], check=False,
capture_output=True)
self.assertEqual(p.returncode, 0)
self.assertEqual(p.stderr, '')
return p.stdout
def test_atomics(self):
roundtrip(self, 'atomics_target_feature.wasm')
module = self.disassemble('atomics_target_feature.wasm')
self.assertIn('i32.atomic.rmw.add', module)
def test_bulk_memory(self):
roundtrip(self, 'bulkmem_target_feature.wasm')
module = self.disassemble('bulkmem_target_feature.wasm')
self.assertIn('memory.copy', module)
def test_nontrapping_fptoint(self):
roundtrip(self, 'truncsat_target_feature.wasm')
module = self.disassemble('truncsat_target_feature.wasm')
self.assertIn('i32.trunc_sat_f32_u', module)
def test_sign_ext(self):
roundtrip(self, 'signext_target_feature.wasm')
module = self.disassemble('signext_target_feature.wasm')
self.assertIn('i32.extend8_s', module)
def test_simd(self):
roundtrip(self, 'simd_target_feature.wasm')
module = self.disassemble('simd_target_feature.wasm')
self.assertIn('i32x4.splat', module)
def test_incompatible_features(self):
path = input_path('signext_target_feature.wasm')
p = run_process(
WASM_OPT + ['--print', '-mvp', '--enable-simd', '-o', os.devnull, path],
check=False, capture_output=True
)
self.assertNotEqual(p.returncode, 0)
self.assertIn('Fatal: module uses features not explicitly specified, ' +
'use --detect-features to resolve',
p.stderr)
def test_incompatible_features_forced(self):
path = input_path('signext_target_feature.wasm')
p = run_process(
WASM_OPT + ['--print', '--detect-features', '-mvp', '--enable-simd',
'-o', os.devnull, path],
check=False, capture_output=True
)
self.assertNotEqual(p.returncode, 0)
self.assertIn('all used features should be allowed', p.stderr)
def test_explicit_detect_features(self):
path = input_path('signext_target_feature.wasm')
p = run_process(
WASM_OPT + ['--print', '-mvp', '--detect-features',
'-o', os.devnull, path],
check=False, capture_output=True
)
self.assertEqual(p.returncode, 0)
self.assertEqual(p.stderr, '')
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