diff --git a/services/surfaceflinger/tests/unittests/FakePhaseOffsets.h b/services/surfaceflinger/tests/unittests/FakePhaseOffsets.h
new file mode 100644
index 0000000..0739f15
--- /dev/null
+++ b/services/surfaceflinger/tests/unittests/FakePhaseOffsets.h
@@ -0,0 +1,52 @@
+/*
+ * Copyright 2019 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <gmock/gmock.h>
+
+#include "Scheduler/PhaseOffsets.h"
+
+namespace android {
+namespace scheduler {
+
+class FakePhaseOffsets : public android::scheduler::PhaseOffsets {
+    nsecs_t FAKE_PHASE_OFFSET_NS = 0;
+
+public:
+    FakePhaseOffsets() = default;
+    ~FakePhaseOffsets() = default;
+
+    nsecs_t getCurrentAppOffset() override { return FAKE_PHASE_OFFSET_NS; }
+    nsecs_t getCurrentSfOffset() override { return FAKE_PHASE_OFFSET_NS; }
+
+    // Returns early, early GL, and late offsets for Apps and SF.
+    PhaseOffsets::Offsets getCurrentOffsets() const override {
+        return Offsets{{FAKE_PHASE_OFFSET_NS, FAKE_PHASE_OFFSET_NS},
+                       {FAKE_PHASE_OFFSET_NS, FAKE_PHASE_OFFSET_NS},
+                       {FAKE_PHASE_OFFSET_NS, FAKE_PHASE_OFFSET_NS}};
+    }
+
+    // This function should be called when the device is switching between different
+    // refresh rates, to properly update the offsets.
+    void setRefreshRateType(RefreshRateConfigs::RefreshRateType /*refreshRateType*/) override {}
+
+    // Returns current offsets in human friendly format.
+    void dump(std::string& /*result*/) const override {}
+};
+
+} // namespace scheduler
+} // namespace android
\ No newline at end of file
diff --git a/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h b/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
index 9c5c967..3080174 100644
--- a/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
+++ b/services/surfaceflinger/tests/unittests/TestableSurfaceFlinger.h
@@ -23,6 +23,7 @@
 #include "ColorLayer.h"
 #include "ContainerLayer.h"
 #include "DisplayDevice.h"
+#include "FakePhaseOffsets.h"
 #include "Layer.h"
 #include "NativeWindowSurface.h"
 #include "StartPropertySetThread.h"
@@ -75,6 +76,10 @@
         return std::make_unique<android::impl::MessageQueue>();
     }
 
+    std::unique_ptr<scheduler::PhaseOffsets> createPhaseOffsets() override {
+        return std::make_unique<scheduler::FakePhaseOffsets>();
+    }
+
     std::unique_ptr<Scheduler> createScheduler(std::function<void(bool)>) override {
         // TODO: Use test-fixture controlled factory
         return nullptr;