When allocation rate is low and we are close to the new space limit, we should perform a scavenge d…

test/unittests/heap/gc-idle-time-handler-unittest.cc

Index: test/unittests/heap/gc-idle-time-handler-unittest.cc
diff --git a/test/unittests/heap/gc-idle-time-handler-unittest.cc b/test/unittests/heap/gc-idle-time-handler-unittest.cc
index c75fde492e5822fbc5d77fb3d5cfa0db9cd2a000..e74152a5fdcf34d251665c431e57fa7b8e895fc0 100644
--- a/test/unittests/heap/gc-idle-time-handler-unittest.cc
+++ b/test/unittests/heap/gc-idle-time-handler-unittest.cc
@@ -156,6 +156,19 @@ TEST_F(GCIdleTimeHandlerTest, DoScavengeLowScavengeSpeed) {
 }
 
 
+TEST_F(GCIdleTimeHandlerTest, DoScavengeLowAllocationRate) {
+  GCIdleTimeHandler::HeapState heap_state = DefaultHeapState();
+  heap_state.used_new_space_size = kNewSpaceCapacity;
+  heap_state.new_space_allocation_throughput_in_bytes_per_ms =
+      GCIdleTimeHandler::kLowAllocationThroughput - 1;
+  int idle_time_ms = 16;
+  EXPECT_TRUE(GCIdleTimeHandler::ShouldDoScavenge(
+      idle_time_ms, heap_state.new_space_capacity,
+      heap_state.used_new_space_size, heap_state.scavenge_speed_in_bytes_per_ms,
+      heap_state.new_space_allocation_throughput_in_bytes_per_ms));
+}
+
+
 TEST_F(GCIdleTimeHandlerTest, DoScavengeHighScavengeSpeed) {
   GCIdleTimeHandler::HeapState heap_state = DefaultHeapState();
   heap_state.used_new_space_size = kNewSpaceCapacity;