diff --git a/services/inputflinger/tests/CursorInputMapper_test.cpp b/services/inputflinger/tests/CursorInputMapper_test.cpp
index 6d6b7d8..cfce6e7 100644
--- a/services/inputflinger/tests/CursorInputMapper_test.cpp
+++ b/services/inputflinger/tests/CursorInputMapper_test.cpp
@@ -57,6 +57,7 @@
 protected:
     void SetUp() override {
         InputMapperUnitTest::SetUp();
+        createDevice();
 
         // Current scan code state - all keys are UP by default
         setScanCodeState(KeyState::UP,
diff --git a/services/inputflinger/tests/InputMapperTest.cpp b/services/inputflinger/tests/InputMapperTest.cpp
index 36be684..b9d7f4a 100644
--- a/services/inputflinger/tests/InputMapperTest.cpp
+++ b/services/inputflinger/tests/InputMapperTest.cpp
@@ -19,6 +19,7 @@
 #include <InputReaderBase.h>
 #include <gtest/gtest.h>
 #include <ui/Rotation.h>
+#include <utils/Timers.h>
 
 namespace android {
 
@@ -36,15 +37,21 @@
     EXPECT_CALL(mMockInputReaderContext, getPolicy()).WillRepeatedly(Return(mFakePolicy.get()));
 
     EXPECT_CALL(mMockInputReaderContext, getEventHub()).WillRepeatedly(Return(&mMockEventHub));
-    InputDeviceIdentifier identifier;
-    identifier.name = "device";
-    identifier.location = "USB1";
-    identifier.bus = 0;
 
-    EXPECT_CALL(mMockEventHub, getDeviceIdentifier(EVENTHUB_ID)).WillRepeatedly(Return(identifier));
+    mIdentifier.name = "device";
+    mIdentifier.location = "USB1";
+    mIdentifier.bus = 0;
+    EXPECT_CALL(mMockEventHub, getDeviceIdentifier(EVENTHUB_ID))
+            .WillRepeatedly(Return(mIdentifier));
+}
+
+void InputMapperUnitTest::createDevice() {
     mDevice = std::make_unique<InputDevice>(&mMockInputReaderContext, DEVICE_ID,
-                                            /*generation=*/2, identifier);
+                                            /*generation=*/2, mIdentifier);
+    mDevice->addEmptyEventHubDevice(EVENTHUB_ID);
     mDeviceContext = std::make_unique<InputDeviceContext>(*mDevice, EVENTHUB_ID);
+    std::list<NotifyArgs> _ =
+            mDevice->configure(systemTime(), mReaderConfiguration, /*changes=*/{});
 }
 
 void InputMapperUnitTest::setupAxis(int axis, bool valid, int32_t min, int32_t max,
diff --git a/services/inputflinger/tests/InputMapperTest.h b/services/inputflinger/tests/InputMapperTest.h
index 05b0e97..995909b 100644
--- a/services/inputflinger/tests/InputMapperTest.h
+++ b/services/inputflinger/tests/InputMapperTest.h
@@ -43,6 +43,13 @@
     static constexpr float INITIAL_CURSOR_Y = 240;
     virtual void SetUp() override;
 
+    /**
+     * Initializes mDevice and mDeviceContext. When this happens, mDevice takes a copy of
+     * mPropertyMap, so tests that need to set configuration properties should do so before calling
+     * this. Others will most likely want to call it in their SetUp method.
+     */
+    void createDevice();
+
     void setupAxis(int axis, bool valid, int32_t min, int32_t max, int32_t resolution);
 
     void expectScanCodes(bool present, std::set<int> scanCodes);
@@ -54,6 +61,7 @@
     std::list<NotifyArgs> process(int32_t type, int32_t code, int32_t value);
     std::list<NotifyArgs> process(nsecs_t when, int32_t type, int32_t code, int32_t value);
 
+    InputDeviceIdentifier mIdentifier;
     MockEventHubInterface mMockEventHub;
     sp<FakeInputReaderPolicy> mFakePolicy;
     std::shared_ptr<FakePointerController> mFakePointerController;
diff --git a/services/inputflinger/tests/KeyboardInputMapper_test.cpp b/services/inputflinger/tests/KeyboardInputMapper_test.cpp
index 2ef7999..b44529b 100644
--- a/services/inputflinger/tests/KeyboardInputMapper_test.cpp
+++ b/services/inputflinger/tests/KeyboardInputMapper_test.cpp
@@ -55,6 +55,7 @@
 
     void SetUp() override {
         InputMapperUnitTest::SetUp();
+        createDevice();
 
         // set key-codes expected in tests
         for (const auto& [scanCode, outKeycode] : mKeyCodeMap) {
diff --git a/services/inputflinger/tests/MultiTouchMotionAccumulator_test.cpp b/services/inputflinger/tests/MultiTouchMotionAccumulator_test.cpp
index 9fa6cdd..5e67506 100644
--- a/services/inputflinger/tests/MultiTouchMotionAccumulator_test.cpp
+++ b/services/inputflinger/tests/MultiTouchMotionAccumulator_test.cpp
@@ -23,6 +23,11 @@
 protected:
     static constexpr size_t SLOT_COUNT = 8;
 
+    void SetUp() override {
+        InputMapperUnitTest::SetUp();
+        createDevice();
+    }
+
     MultiTouchMotionAccumulator mMotionAccumulator;
 
     void processMotionEvent(int32_t type, int32_t code, int32_t value) {
diff --git a/services/inputflinger/tests/TouchpadInputMapper_test.cpp b/services/inputflinger/tests/TouchpadInputMapper_test.cpp
index 8cf738c..91958e8 100644
--- a/services/inputflinger/tests/TouchpadInputMapper_test.cpp
+++ b/services/inputflinger/tests/TouchpadInputMapper_test.cpp
@@ -107,6 +107,7 @@
                     *outValue = 0;
                     return OK;
                 });
+        createDevice();
         mMapper = createInputMapper<TouchpadInputMapper>(*mDeviceContext, mReaderConfiguration);
     }
 };