diff --git a/fxjs/gc/gced_tree_node_mixin_unittest.cpp b/fxjs/gc/gced_tree_node_mixin_unittest.cpp
index eba8c15..835a09c 100644
--- a/fxjs/gc/gced_tree_node_mixin_unittest.cpp
+++ b/fxjs/gc/gced_tree_node_mixin_unittest.cpp
@@ -53,11 +53,6 @@
         heap()->GetAllocationHandle());
   }
 
-  void ForceGCAndPump() {
-    FXGC_ForceGarbageCollection(heap());
-    V8TestEnvironment::PumpPlatformMessageLoop(isolate());
-  }
-
   void AddClutterToFront(ObservableGCedTreeNodeMixinForTest* parent) {
     for (int i = 0; i < 4; ++i) {
       parent->AppendFirstChild(
diff --git a/fxjs/gc/gced_tree_node_unittest.cpp b/fxjs/gc/gced_tree_node_unittest.cpp
index dc7a28c..00158ce 100644
--- a/fxjs/gc/gced_tree_node_unittest.cpp
+++ b/fxjs/gc/gced_tree_node_unittest.cpp
@@ -47,11 +47,6 @@
         heap()->GetAllocationHandle());
   }
 
-  void ForceGCAndPump() {
-    FXGC_ForceGarbageCollection(heap());
-    V8TestEnvironment::PumpPlatformMessageLoop(isolate());
-  }
-
   void AddClutterToFront(ObservableGCedTreeNodeForTest* parent) {
     for (int i = 0; i < 4; ++i) {
       parent->AppendFirstChild(
diff --git a/fxjs/gc/heap_unittest.cpp b/fxjs/gc/heap_unittest.cpp
index 16d331a..f9de39f 100644
--- a/fxjs/gc/heap_unittest.cpp
+++ b/fxjs/gc/heap_unittest.cpp
@@ -166,12 +166,10 @@
   EXPECT_EQ(1u, PseudoCollectible::DeadCount());
 }
 
-// TODO(tsepez): find conditions that will trigger a GC.
-TEST_F(HeapUnitTest, DISABLED_Bloat) {
-  FXGCScopedHeap heap1 = FXGC_CreateHeap();
-  ASSERT_TRUE(heap1);
+TEST_F(HeapUnitTest, Bloat) {
+  ASSERT_TRUE(heap());
   for (int i = 0; i < 100000; ++i) {
-    cppgc::MakeGarbageCollected<Bloater>(heap1->GetAllocationHandle());
-    V8TestEnvironment::PumpPlatformMessageLoop(isolate());
+    cppgc::MakeGarbageCollected<Bloater>(heap()->GetAllocationHandle());
+    Pump();  // Do not force GC, must happen implicitly when space required.
   }
 }
diff --git a/testing/fxgc_unittest.cpp b/testing/fxgc_unittest.cpp
index 5b0a493..f7378a9 100644
--- a/testing/fxgc_unittest.cpp
+++ b/testing/fxgc_unittest.cpp
@@ -14,7 +14,7 @@
 FXGCUnitTest::~FXGCUnitTest() = default;
 
 void FXGCUnitTest::SetUp() {
-  FXV8UnitTest::SetUp();
+  ::testing::Test::SetUp();
   auto* env = V8TestEnvironment::GetInstance();
   FXGC_Initialize(env->platform(), env->isolate());
   heap_ = FXGC_CreateHeap();
@@ -22,12 +22,18 @@
 }
 
 void FXGCUnitTest::TearDown() {
-  FXGC_ForceGarbageCollection(heap_.get());
-  auto* env = V8TestEnvironment::GetInstance();
-  while (v8::platform::PumpMessageLoop(env->platform(), env->isolate()))
-    continue;
-
+  ForceGCAndPump();
   heap_.reset();
   FXGC_Release();
-  FXV8UnitTest::TearDown();
+  ::testing::Test::TearDown();
+}
+
+void FXGCUnitTest::ForceGCAndPump() {
+  FXGC_ForceGarbageCollection(heap_.get());
+  Pump();
+}
+
+void FXGCUnitTest::Pump() {
+  V8TestEnvironment::PumpPlatformMessageLoop(
+      V8TestEnvironment::GetInstance()->isolate());
 }
diff --git a/testing/fxgc_unittest.h b/testing/fxgc_unittest.h
index 0e6515b..ac5a603 100644
--- a/testing/fxgc_unittest.h
+++ b/testing/fxgc_unittest.h
@@ -6,18 +6,20 @@
 #define TESTING_FXGC_UNITTEST_H_
 
 #include "fxjs/gc/heap.h"
-#include "testing/fxv8_unittest.h"
+#include "testing/gtest/include/gtest/gtest.h"
 
-class FXGCUnitTest : public FXV8UnitTest {
+class FXGCUnitTest : public ::testing::Test {
  public:
   FXGCUnitTest();
   ~FXGCUnitTest() override;
 
-  // FXV8UnitTest:
+  // testing::Test:
   void SetUp() override;
   void TearDown() override;
 
   cppgc::Heap* heap() const { return heap_.get(); }
+  void ForceGCAndPump();
+  void Pump();
 
  private:
   FXGCScopedHeap heap_;