Fix number-string cache test case.

test/cctest/test-heap.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 18 matching lines @@
 #include <utility>
 
 #include "src/v8.h"
 
 #include "src/compilation-cache.h"
 #include "src/execution.h"
 #include "src/factory.h"
 #include "src/global-handles.h"
 #include "src/ic/ic.h"
 #include "src/macro-assembler.h"
+#include "src/snapshot.h"
 #include "test/cctest/cctest.h"
 
 using namespace v8::internal;
 
 static void CheckMap(Map* map, int type, int instance_size) {
   CHECK(map->IsHeapObject());
 #ifdef DEBUG
   CHECK(CcTest::heap()->Contains(map));
 #endif
   CHECK_EQ(CcTest::heap()->meta_map(), map->map());
@@ skipping 5034 matching lines @@
   Handle<JSArray> array = factory->NewJSArray(2);
 
   Handle<String> name = factory->InternalizeUtf8String("testArray");
   JSReceiver::SetProperty(global, name, array, SLOPPY).Check();
   CompileRun("testArray[0] = 1; testArray[1] = 2; testArray.shift();");
   heap->CollectGarbage(OLD_POINTER_SPACE);
 }
 
 
 TEST(NumberStringCacheSize) {
+  if (!Snapshot::HaveASnapshotToStartFrom()) return;
+  // Test that the number-string cache has not been resized in the snapshot.
   CcTest::InitializeVM();
   Isolate* isolate = CcTest::i_isolate();
   Heap* heap = isolate->heap();
-  // Test that the number-string cache has not been resized.
   CHECK_EQ(TestHeap::kInitialNumberStringCacheSize * 2,
            heap->number_string_cache()->length());
 }
 
 
 #ifdef DEBUG
 TEST(PathTracer) {
   CcTest::InitializeVM();
   v8::HandleScope scope(CcTest::isolate());
 
   v8::Local<v8::Value> result = CompileRun("'abc'");
   Handle<Object> o = v8::Utils::OpenHandle(*result);
   CcTest::i_isolate()->heap()->TracePathToObject(*o);
 }
 #endif  // DEBUG