1 files changed, 27 insertions, 2 deletions
diff --git a/test/unit/test_features.py b/test/unit/test_features.py
index 2f9829a33..f9c410414 100644
--- a/test/unit/test_features.py
+++ b/test/unit/test_features.py
@@ -5,12 +5,13 @@ from scripts.test.shared import WASM_OPT, run_process, options
 
 class FeatureValidationTest(unittest.TestCase):
   def check_feature(self, module, error, flag):
-    p = run_process(WASM_OPT + ['--mvp-features', '--print'],
+    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'],
+    p = run_process(WASM_OPT + ['--mvp-features', flag, '--print',
+                                '-o', os.devnull],
                     input=module, check=False, capture_output=True)
     self.assertEqual(p.returncode, 0)
 
@@ -20,6 +21,9 @@ class FeatureValidationTest(unittest.TestCase):
   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
@@ -89,6 +93,27 @@ class FeatureValidationTest(unittest.TestCase):
     '''
     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):