Report availability of toResizableBuffer in test_memory_growth. NFC (#27116)

Split out from #27096

Author: sbc100

.circleci/config.yml

@@ -985,6 +985,7 @@ jobs:
             other.test_node_emscripten_num_logical_cores
             other.test_js_base64_api
             other.test_pthread_growth*
+            other.test_memory_growth
             core2.test_hello_world
             core2.test_pthread_create
             core2.test_i64_invoke_bigint

test/common.py

@@ -332,6 +332,14 @@ def get_deno():
   return get_engine(engine_is_deno)
 
 
+def check_node_version(major, minor=0, revision=0):
+  nodejs = get_nodejs()
+  if not nodejs:
+    return False
+  version = shared.get_node_version(nodejs)
+  return version >= (major, minor, revision)
+
+
 def clean_js_output(output):
   """Cleanup the JS output prior to running verification steps on it.
 
@@ -543,14 +551,10 @@ def require_wasm64(self):
     self.fail('either d8, node >= 24 or deno required to run wasm64 tests.  Use EMTEST_SKIP_WASM64 to skip')
 
   def try_require_node_version(self, major, minor=0, revision=0):
-    nodejs = get_nodejs()
-    if not nodejs:
-      return False
-    version = shared.get_node_version(nodejs)
-    if version < (major, minor, revision):
+    if not check_node_version(major, minor, revision):
       return False
 
-    self.require_engine(nodejs)
+    self.require_engine(get_nodejs())
     return True
 
   def require_wasm_legacy_eh(self):

test/test_other.py

@@ -44,6 +44,7 @@
   TEST_ROOT,
   WEBIDL_BINDER,
   RunnerCore,
+  check_node_version,
   copy_asset,
   copytree,
   create_file,
@@ -6454,22 +6455,39 @@ def test_file_packager_huge(self):
     self.assertContained(MESSAGE, err)
     self.clear()
 
+  @crossplatform
   @also_with_wasm2js
   def test_memory_growth(self):
     create_file('main.c', r'''
 #include <assert.h>
 #include <stdlib.h>
+#include <string.h>
+#include <emscripten/em_asm.h>
+#include <emscripten/console.h>
 
 int main() {
-  void* x = malloc(10 * 1024 * 1024);
+  // Report whether `toResizableBuffer` is availble on the wasm memory.
+  EM_ASM(out('resizable memory buffers:', Boolean(wasmMemory.toResizableBuffer)));
+
+  char* x = malloc(10 * 1024 * 1024);
   assert(x != NULL);
+  // Have JS use some of the memory in the expanded range.
+  char* str = x + 9 * 1024 * 1024;
+  strcpy(str, "Hello, world!");
+  emscripten_out(str);
   return 0;
 }
 ''')
-    output = self.do_runf('main.c', cflags=['-sALLOW_MEMORY_GROWTH', '-sINITIAL_HEAP=1mb'])
+    output = self.do_runf('main.c', 'Hello, world!\n', cflags=['-sALLOW_MEMORY_GROWTH', '-sINITIAL_HEAP=1mb'])
     if self.is_wasm2js():
       self.assertContained('Warning: Enlarging memory arrays, this is not fast! 1179648,10616832\n', output)
 
+    # Node versions older than 26 do not support toResizableBuffer
+    if self.is_wasm2js() or (self.engine_is_node() and not check_node_version(26)):
+      self.assertContained('resizable memory buffers: false\n', output)
+    else:
+      self.assertContained('resizable memory buffers: true\n', output)
+
   @also_with_wasm2js
   @parameterized({
     '': (False,),
@@ -8587,7 +8605,7 @@ def test_exceptions_stack_trace_and_message(self):
     '''
     self.cflags += ['-g']
 
-    if '-fwasm-exceptions' in self.cflags and engine_is_node(self.js_engines[0]):
+    if '-fwasm-exceptions' in self.cflags and self.engine_is_node():
       if not self.try_require_node_version(24):
         # Node versions prior to v24 do not implement the new 'traceStack' option in
         # WebAssembly.Exception constructor.
@@ -8707,7 +8725,7 @@ def test_exceptions_rethrow_stack_trace_and_message(self):
         return 0;
       }
     '''
-    if '-fwasm-exceptions' in self.cflags and engine_is_node(self.js_engines[0]):
+    if '-fwasm-exceptions' in self.cflags and self.engine_is_node():
       if not self.try_require_node_version(24):
         # Node versions prior to v24 do not implement the new 'traceStack' option in
         # WebAssembly.Exception constructor.