Add setter to Isolate for allowing Atomics.wait

test/cctest/test-api.cc

Index: test/cctest/test-api.cc
diff --git a/test/cctest/test-api.cc b/test/cctest/test-api.cc
index 50c57f1949f178f3e3e1422591d741c97262ff63..30e60c344d2ae55a225363d1277b915da8e398cd 100644
--- a/test/cctest/test-api.cc
+++ b/test/cctest/test-api.cc
@@ -26557,3 +26557,18 @@ TEST(DeterministicRandomNumberGeneration) {
 
   v8::internal::FLAG_random_seed = previous_seed;
 }
+
+UNINITIALIZED_TEST(AllowAtomicsWait) {
+  using namespace i;
+  v8::Isolate::CreateParams create_params;
+  create_params.allow_atomics_wait = false;
+  create_params.array_buffer_allocator = CcTest::array_buffer_allocator();
+  v8::Isolate* isolate = v8::Isolate::New(create_params);
+  Isolate* i_isolate = reinterpret_cast<Isolate*>(isolate);
+  {
+    CHECK_EQ(false, i_isolate->allow_atomics_wait());
+    isolate->SetAllowAtomicsWait(true);
+    CHECK_EQ(true, i_isolate->allow_atomics_wait());
+  }
+  isolate->Dispose();
+}