diff --git a/services/surfaceflinger/tests/unittests/SchedulerTest.cpp b/services/surfaceflinger/tests/unittests/SchedulerTest.cpp
index 35619a3..eee9400 100644
--- a/services/surfaceflinger/tests/unittests/SchedulerTest.cpp
+++ b/services/surfaceflinger/tests/unittests/SchedulerTest.cpp
@@ -175,4 +175,25 @@
     mScheduler.chooseRefreshRateForContent();
 }
 
+TEST_F(SchedulerTest, testDispatchCachedReportedConfig) {
+    // If the optional fields are cleared, the function should return before
+    // onConfigChange is called.
+    mScheduler.clearOptionalFieldsInFeatures();
+    EXPECT_NO_FATAL_FAILURE(mScheduler.dispatchCachedReportedConfig());
+    EXPECT_CALL(*mEventThread, onConfigChanged(_, _, _)).Times(0);
+}
+
+TEST_F(SchedulerTest, onNonPrimaryDisplayConfigChanged_invalidParameters) {
+    HwcConfigIndexType configId = HwcConfigIndexType(111);
+    nsecs_t vsyncPeriod = 111111;
+
+    // If the handle is incorrect, the function should return before
+    // onConfigChange is called.
+    Scheduler::ConnectionHandle invalidHandle = {.id = 123};
+    EXPECT_NO_FATAL_FAILURE(mScheduler.onNonPrimaryDisplayConfigChanged(invalidHandle,
+                                                                        PHYSICAL_DISPLAY_ID,
+                                                                        configId, vsyncPeriod));
+    EXPECT_CALL(*mEventThread, onConfigChanged(_, _, _)).Times(0);
+}
+
 } // namespace android
diff --git a/services/surfaceflinger/tests/unittests/TestableScheduler.h b/services/surfaceflinger/tests/unittests/TestableScheduler.h
index db3e0bd..a9d9dc0 100644
--- a/services/surfaceflinger/tests/unittests/TestableScheduler.h
+++ b/services/surfaceflinger/tests/unittests/TestableScheduler.h
@@ -16,6 +16,7 @@
 
 #pragma once
 
+#include <Scheduler/Scheduler.h>
 #include <gmock/gmock.h>
 #include <gui/ISurfaceComposer.h>
 
@@ -93,6 +94,22 @@
         return mFeatures.touch == Scheduler::TouchState::Active;
     }
 
+    void dispatchCachedReportedConfig() {
+        std::lock_guard<std::mutex> lock(mFeatureStateLock);
+        return Scheduler::dispatchCachedReportedConfig();
+    }
+
+    void clearOptionalFieldsInFeatures() {
+        std::lock_guard<std::mutex> lock(mFeatureStateLock);
+        mFeatures.cachedConfigChangedParams.reset();
+    }
+
+    void onNonPrimaryDisplayConfigChanged(ConnectionHandle handle, PhysicalDisplayId displayId,
+                                          HwcConfigIndexType configId, nsecs_t vsyncPeriod) {
+        return Scheduler::onNonPrimaryDisplayConfigChanged(handle, displayId, configId,
+                                                           vsyncPeriod);
+    }
+
     ~TestableScheduler() {
         // All these pointer and container clears help ensure that GMock does
         // not report a leaked object, since the Scheduler instance may