Initial idle GC logic.

runtime/vm/dart_api_impl_test.cc

Index: runtime/vm/dart_api_impl_test.cc
diff --git a/runtime/vm/dart_api_impl_test.cc b/runtime/vm/dart_api_impl_test.cc
index 9e9a4e3764d46675313a060c4cd5f0323624beeb..67ee0c412c9aad69c74410ed36803cf4d16b9384 100644
--- a/runtime/vm/dart_api_impl_test.cc
+++ b/runtime/vm/dart_api_impl_test.cc
@@ -9020,6 +9020,44 @@ TEST_CASE(DartAPI_LoadLibraryPatch_Error3) {
   EXPECT(Dart_IsError(result));
 }
 
+void NotifyIdleNative(Dart_NativeArguments args) {
+  Dart_NotifyIdle(Dart_TimelineGetMicros() + 10 * kMicrosecondsPerMillisecond);
+}
+
+static Dart_NativeFunction NotifyIdle_native_lookup(Dart_Handle name,
+                                                    int argument_count,
+                                                    bool* auto_setup_scope) {
+  ASSERT(auto_setup_scope != NULL);
+  *auto_setup_scope = true;
+  return reinterpret_cast<Dart_NativeFunction>(&NotifyIdleNative);
+}
+
+TEST_CASE(DartAPI_NotifyIdle) {
+  const char* kScriptChars =
+      "void notifyIdle() native 'Test_nativeFunc';\n"
+      "void main() {\n"
+      "  var v;\n"
+      "  for (var i = 0; i < 100; i++) {\n"
+      "    var t = new List();\n"
+      "    for (var j = 0; j < 10000; j++) {\n"
+      "      t.add(new List(100));\n"
+      "    }\n"
+      "    v = t;\n"
+      "    notifyIdle();\n"
+      "  }\n"
+      "}\n";
+  Dart_Handle lib =
+      TestCase::LoadTestScript(kScriptChars, &NotifyIdle_native_lookup);
+  Dart_Handle result;
+
+  // Use Dart_PropagateError to propagate the error.
+  use_throw_exception = false;
+  use_set_return = false;
+
+  result = Dart_Invoke(lib, NewString("main"), 0, NULL);
+  EXPECT_VALID(result);
+}
+
 #endif  // !PRODUCT
 
 }  // namespace dart