[promises] Refactor debug code

test/cctest/test-code-stub-assembler.cc

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/base/utils/random-number-generator.h"
 #include "src/builtins/builtins-promise.h"
 #include "src/code-factory.h"
 #include "src/code-stub-assembler.h"
 #include "src/compiler/node.h"
 #include "src/isolate.h"
@@ skipping 1878 matching lines @@
   CHECK(result->IsPromiseReactionJobInfo());
   Handle<PromiseReactionJobInfo> promise_info =
       Handle<PromiseReactionJobInfo>::cast(result);
   CHECK_EQ(Smi::FromInt(1), promise_info->value());
   CHECK(promise_info->promise()->IsJSPromise());
   CHECK(promise_info->tasks()->IsFixedArray());
   CHECK(promise_info->deferred_promise()->IsFixedArray());
   CHECK(promise_info->deferred_on_resolve()->IsUndefined(isolate));
   CHECK(promise_info->deferred_on_reject()->IsUndefined(isolate));
   CHECK(promise_info->context()->IsContext());
-  CHECK(promise_info->debug_id()->IsUndefined(isolate));
-  CHECK(promise_info->debug_name()->IsUndefined(isolate));
+  CHECK_EQ(kDebugPromiseNoID, promise_info->debug_id());
+  CHECK_EQ(kDebugNotActive, promise_info->debug_name());
 }
 
 TEST(IsSymbol) {
   Isolate* isolate(CcTest::InitIsolateOnce());
 
   const int kNumParams = 1;
   CodeAssemblerTester data(isolate, kNumParams);
   CodeStubAssembler m(data.state());
 
   Node* const symbol = m.Parameter(0);
@@ skipping 303 matching lines @@
               .ToHandleChecked();
     Handle<Object> prop2 =
         JSReceiver::GetProperty(isolate, promise, "rejectedReason")
             .ToHandleChecked();
     CHECK_EQ(*rejected_str, *prop2);
   }
 }
 
 }  // namespace internal
 }  // namespace v8