diff --git a/tests/Android.bp b/tests/Android.bp
index 4467994..7276a0b 100644
--- a/tests/Android.bp
+++ b/tests/Android.bp
@@ -8,6 +8,8 @@
     "foo/1.0",
     "foo/1.0/default",
     "foo/1.0/default/lib",
+    "hash/1.0",
+    "hash/1.0/default",
     "inheritance/1.0",
     "inheritance/1.0/default",
     "libhwbinder/1.0",
diff --git a/tests/hash/1.0/Android.bp b/tests/hash/1.0/Android.bp
new file mode 100644
index 0000000..c217e5c
--- /dev/null
+++ b/tests/hash/1.0/Android.bp
@@ -0,0 +1,59 @@
+// This file is autogenerated by hidl-gen. Do not edit manually.
+
+filegroup {
+    name: "android.hardware.tests.hash@1.0_hal",
+    srcs: [
+        "IHash.hal",
+    ],
+}
+
+genrule {
+    name: "android.hardware.tests.hash@1.0_genc++",
+    tools: ["hidl-gen"],
+    cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.tests.hash@1.0",
+    srcs: [
+        ":android.hardware.tests.hash@1.0_hal",
+    ],
+    out: [
+        "android/hardware/tests/hash/1.0/HashAll.cpp",
+    ],
+}
+
+genrule {
+    name: "android.hardware.tests.hash@1.0_genc++_headers",
+    tools: ["hidl-gen"],
+    cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.tests.hash@1.0",
+    srcs: [
+        ":android.hardware.tests.hash@1.0_hal",
+    ],
+    out: [
+        "android/hardware/tests/hash/1.0/IHash.h",
+        "android/hardware/tests/hash/1.0/IHwHash.h",
+        "android/hardware/tests/hash/1.0/BnHwHash.h",
+        "android/hardware/tests/hash/1.0/BpHwHash.h",
+        "android/hardware/tests/hash/1.0/BsHash.h",
+    ],
+}
+
+cc_library_shared {
+    name: "android.hardware.tests.hash@1.0",
+    generated_sources: ["android.hardware.tests.hash@1.0_genc++"],
+    generated_headers: ["android.hardware.tests.hash@1.0_genc++_headers"],
+    export_generated_headers: ["android.hardware.tests.hash@1.0_genc++_headers"],
+    shared_libs: [
+        "libhidlbase",
+        "libhidltransport",
+        "libhwbinder",
+        "liblog",
+        "libutils",
+        "libcutils",
+        "android.hidl.base@1.0",
+    ],
+    export_shared_lib_headers: [
+        "libhidlbase",
+        "libhidltransport",
+        "libhwbinder",
+        "libutils",
+        "android.hidl.base@1.0",
+    ],
+}
diff --git a/tests/hash/1.0/Android.mk b/tests/hash/1.0/Android.mk
new file mode 100644
index 0000000..15428b4
--- /dev/null
+++ b/tests/hash/1.0/Android.mk
@@ -0,0 +1,76 @@
+# This file is autogenerated by hidl-gen. Do not edit manually.
+
+LOCAL_PATH := $(call my-dir)
+
+################################################################################
+
+include $(CLEAR_VARS)
+LOCAL_MODULE := android.hardware.tests.hash@1.0-java
+LOCAL_MODULE_CLASS := JAVA_LIBRARIES
+
+intermediates := $(call local-generated-sources-dir, COMMON)
+
+HIDL := $(HOST_OUT_EXECUTABLES)/hidl-gen$(HOST_EXECUTABLE_SUFFIX)
+
+LOCAL_JAVA_LIBRARIES := \
+    android.hidl.base@1.0-java \
+
+
+#
+# Build IHash.hal
+#
+GEN := $(intermediates)/android/hardware/tests/hash/V1_0/IHash.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/IHash.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava \
+        -randroid.hardware:hardware/interfaces \
+        -randroid.hidl:system/libhidl/transport \
+        android.hardware.tests.hash@1.0::IHash
+
+$(GEN): $(LOCAL_PATH)/IHash.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+include $(BUILD_JAVA_LIBRARY)
+
+
+################################################################################
+
+include $(CLEAR_VARS)
+LOCAL_MODULE := android.hardware.tests.hash@1.0-java-static
+LOCAL_MODULE_CLASS := JAVA_LIBRARIES
+
+intermediates := $(call local-generated-sources-dir, COMMON)
+
+HIDL := $(HOST_OUT_EXECUTABLES)/hidl-gen$(HOST_EXECUTABLE_SUFFIX)
+
+LOCAL_STATIC_JAVA_LIBRARIES := \
+    android.hidl.base@1.0-java-static \
+
+
+#
+# Build IHash.hal
+#
+GEN := $(intermediates)/android/hardware/tests/hash/V1_0/IHash.java
+$(GEN): $(HIDL)
+$(GEN): PRIVATE_HIDL := $(HIDL)
+$(GEN): PRIVATE_DEPS := $(LOCAL_PATH)/IHash.hal
+$(GEN): PRIVATE_OUTPUT_DIR := $(intermediates)
+$(GEN): PRIVATE_CUSTOM_TOOL = \
+        $(PRIVATE_HIDL) -o $(PRIVATE_OUTPUT_DIR) \
+        -Ljava \
+        -randroid.hardware:hardware/interfaces \
+        -randroid.hidl:system/libhidl/transport \
+        android.hardware.tests.hash@1.0::IHash
+
+$(GEN): $(LOCAL_PATH)/IHash.hal
+	$(transform-generated-source)
+LOCAL_GENERATED_SOURCES += $(GEN)
+include $(BUILD_STATIC_JAVA_LIBRARY)
+
+
+
+include $(call all-makefiles-under,$(LOCAL_PATH))
diff --git a/tests/hash/1.0/IHash.hal b/tests/hash/1.0/IHash.hal
new file mode 100644
index 0000000..ba48384
--- /dev/null
+++ b/tests/hash/1.0/IHash.hal
@@ -0,0 +1,32 @@
+/*
+ * Copyright (C) 2017 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.
+ */
+
+package android.hardware.tests.hash@1.0;
+
+/**
+ * Test interface for hashing HAL files.
+ * This file is FREEZED to ensure its hash doesn't change.
+ */
+interface IHash {
+    /**
+     * Dummy.
+     */
+    dummy();
+    /**
+     * Dummy.
+     */
+    functions();
+};
diff --git a/tests/hash/1.0/default/Android.bp b/tests/hash/1.0/default/Android.bp
new file mode 100644
index 0000000..e798a66
--- /dev/null
+++ b/tests/hash/1.0/default/Android.bp
@@ -0,0 +1,15 @@
+cc_library_shared {
+    name: "android.hardware.tests.hash@1.0-impl",
+    relative_install_path: "hw",
+    proprietary: true,
+    srcs: [
+        "Hash.cpp",
+    ],
+    shared_libs: [
+        "libhidlbase",
+        "libhidltransport",
+        "libutils",
+        "android.hardware.tests.hash@1.0",
+        "android.hidl.base@1.0",
+    ],
+}
diff --git a/tests/hash/1.0/default/Hash.cpp b/tests/hash/1.0/default/Hash.cpp
new file mode 100644
index 0000000..caed721
--- /dev/null
+++ b/tests/hash/1.0/default/Hash.cpp
@@ -0,0 +1,30 @@
+#include "Hash.h"
+
+namespace android {
+namespace hardware {
+namespace tests {
+namespace hash {
+namespace V1_0 {
+namespace implementation {
+
+// Methods from ::android::hardware::tests::hash::V1_0::IHash follow.
+Return<void> Hash::dummy() {
+    return Void();
+}
+
+Return<void> Hash::functions() {
+    return Void();
+}
+
+// Methods from ::android::hidl::base::V1_0::IBase follow.
+
+IHash* HIDL_FETCH_IHash(const char* /* name */) {
+    return new Hash();
+}
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace hash
+}  // namespace tests
+}  // namespace hardware
+}  // namespace android
diff --git a/tests/hash/1.0/default/Hash.h b/tests/hash/1.0/default/Hash.h
new file mode 100644
index 0000000..dd1678f
--- /dev/null
+++ b/tests/hash/1.0/default/Hash.h
@@ -0,0 +1,43 @@
+#ifndef ANDROID_HARDWARE_TESTS_HASH_V1_0_HASH_H
+#define ANDROID_HARDWARE_TESTS_HASH_V1_0_HASH_H
+
+#include <android/hardware/tests/hash/1.0/IHash.h>
+#include <hidl/MQDescriptor.h>
+#include <hidl/Status.h>
+
+namespace android {
+namespace hardware {
+namespace tests {
+namespace hash {
+namespace V1_0 {
+namespace implementation {
+
+using ::android::hardware::tests::hash::V1_0::IHash;
+using ::android::hidl::base::V1_0::DebugInfo;
+using ::android::hidl::base::V1_0::IBase;
+using ::android::hardware::hidl_array;
+using ::android::hardware::hidl_memory;
+using ::android::hardware::hidl_string;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::sp;
+
+struct Hash : public IHash {
+    // Methods from ::android::hardware::tests::hash::V1_0::IHash follow.
+    Return<void> dummy() override;
+    Return<void> functions() override;
+
+    // Methods from ::android::hidl::base::V1_0::IBase follow.
+};
+
+extern "C" IHash* HIDL_FETCH_IHash(const char* name);
+
+}  // namespace implementation
+}  // namespace V1_0
+}  // namespace hash
+}  // namespace tests
+}  // namespace hardware
+}  // namespace android
+
+#endif  // ANDROID_HARDWARE_TESTS_HASH_V1_0_HASH_H