diff --git a/tests/expression/1.0/Android.bp b/tests/expression/1.0/Android.bp
index 6209549..61ca6ac 100644
--- a/tests/expression/1.0/Android.bp
+++ b/tests/expression/1.0/Android.bp
@@ -1,169 +1,15 @@
-// This file is autogenerated by hidl-gen. Do not edit manually.
+// This file is autogenerated by hidl-gen -Landroidbp.
 
-filegroup {
-    name: "android.hardware.tests.expression@1.0_hal",
+hidl_interface {
+    name: "android.hardware.tests.expression@1.0",
+    root: "android.hardware",
     srcs: [
         "IExpression.hal",
         "IExpressionExt.hal",
     ],
+    interfaces: [
+        "android.hidl.base@1.0",
+    ],
+    gen_java: true,
 }
 
-genrule {
-    name: "android.hardware.tests.expression@1.0_genc++",
-    tools: ["hidl-gen"],
-    cmd: "$(location hidl-gen) -o $(genDir) -Lc++-sources -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.tests.expression@1.0",
-    srcs: [
-        ":android.hardware.tests.expression@1.0_hal",
-    ],
-    out: [
-        "android/hardware/tests/expression/1.0/ExpressionAll.cpp",
-        "android/hardware/tests/expression/1.0/ExpressionExtAll.cpp",
-    ],
-}
-
-genrule {
-    name: "android.hardware.tests.expression@1.0_genc++_headers",
-    tools: ["hidl-gen"],
-    cmd: "$(location hidl-gen) -o $(genDir) -Lc++-headers -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.tests.expression@1.0",
-    srcs: [
-        ":android.hardware.tests.expression@1.0_hal",
-    ],
-    out: [
-        "android/hardware/tests/expression/1.0/IExpression.h",
-        "android/hardware/tests/expression/1.0/IHwExpression.h",
-        "android/hardware/tests/expression/1.0/BnHwExpression.h",
-        "android/hardware/tests/expression/1.0/BpHwExpression.h",
-        "android/hardware/tests/expression/1.0/BsExpression.h",
-        "android/hardware/tests/expression/1.0/IExpressionExt.h",
-        "android/hardware/tests/expression/1.0/IHwExpressionExt.h",
-        "android/hardware/tests/expression/1.0/BnHwExpressionExt.h",
-        "android/hardware/tests/expression/1.0/BpHwExpressionExt.h",
-        "android/hardware/tests/expression/1.0/BsExpressionExt.h",
-    ],
-}
-
-cc_library {
-    name: "android.hardware.tests.expression@1.0",
-    defaults: ["hidl-module-defaults"],
-    generated_sources: ["android.hardware.tests.expression@1.0_genc++"],
-    generated_headers: ["android.hardware.tests.expression@1.0_genc++_headers"],
-    export_generated_headers: ["android.hardware.tests.expression@1.0_genc++_headers"],
-    vendor_available: true,
-    shared_libs: [
-        "libhidlbase",
-        "libhidltransport",
-        "libhwbinder",
-        "liblog",
-        "libutils",
-        "libcutils",
-    ],
-    export_shared_lib_headers: [
-        "libhidlbase",
-        "libhidltransport",
-        "libhwbinder",
-        "libutils",
-    ],
-}
-
-genrule {
-    name: "android.hardware.tests.expression-V1.0-java_gen_java",
-    tools: ["hidl-gen"],
-    cmd: "$(location hidl-gen) -o $(genDir) -Ljava -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.tests.expression@1.0",
-    srcs: [
-        ":android.hardware.tests.expression@1.0_hal",
-    ],
-    out: [
-        "android/hardware/tests/expression/V1_0/IExpression.java",
-        "android/hardware/tests/expression/V1_0/IExpressionExt.java",
-    ],
-}
-
-java_library {
-    name: "android.hardware.tests.expression-V1.0-java",
-    no_framework_libs: true,
-    defaults: ["hidl-java-module-defaults"],
-    srcs: [":android.hardware.tests.expression-V1.0-java_gen_java"],
-    libs: [
-        "hwbinder",
-        "android.hidl.base-V1.0-java",
-    ]
-}
-
-// This package does not export any types. Not creating java constants export.
-
-
-genrule {
-    name: "android.hardware.tests.expression@1.0-adapter-helper_genc++",
-    tools: ["hidl-gen"],
-    cmd: "$(location hidl-gen) -o $(genDir) -Lc++-adapter-sources -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.tests.expression@1.0",
-    srcs: [
-        ":android.hardware.tests.expression@1.0_hal",
-    ],
-    out: [
-        "android/hardware/tests/expression/1.0/AExpression.cpp",
-        "android/hardware/tests/expression/1.0/AExpressionExt.cpp",
-    ],
-}
-
-genrule {
-    name: "android.hardware.tests.expression@1.0-adapter-helper_genc++_headers",
-    tools: ["hidl-gen"],
-    cmd: "$(location hidl-gen) -o $(genDir) -Lc++-adapter-headers -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.tests.expression@1.0",
-    srcs: [
-        ":android.hardware.tests.expression@1.0_hal",
-    ],
-    out: [
-        "android/hardware/tests/expression/1.0/AExpression.h",
-        "android/hardware/tests/expression/1.0/AExpressionExt.h",
-    ],
-}
-
-cc_library {
-    name: "android.hardware.tests.expression@1.0-adapter-helper",
-    defaults: ["hidl-module-defaults"],
-    generated_sources: ["android.hardware.tests.expression@1.0-adapter-helper_genc++"],
-    generated_headers: ["android.hardware.tests.expression@1.0-adapter-helper_genc++_headers"],
-    export_generated_headers: ["android.hardware.tests.expression@1.0-adapter-helper_genc++_headers"],
-    vendor_available: true,
-    shared_libs: [
-        "libhidlbase",
-        "libhidltransport",
-        "libhwbinder",
-        "liblog",
-        "libutils",
-        "libcutils",
-        "libhidladapter",
-        "android.hardware.tests.expression@1.0",
-        "android.hidl.base@1.0-adapter-helper",
-    ],
-    export_shared_lib_headers: [
-        "libhidlbase",
-        "libhidltransport",
-        "libhwbinder",
-        "libutils",
-        "libhidladapter",
-        "android.hardware.tests.expression@1.0",
-        "android.hidl.base@1.0-adapter-helper",
-    ],
-}
-
-genrule {
-    name: "android.hardware.tests.expression@1.0-adapter_genc++",
-    tools: ["hidl-gen"],
-    cmd: "$(location hidl-gen) -o $(genDir) -Lc++-adapter-main -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.tests.expression@1.0",
-    out: ["main.cpp"]
-}
-
-cc_test {
-    name: "android.hardware.tests.expression@1.0-adapter",
-    defaults: ["hidl-module-defaults"],
-    shared_libs: [
-        "libhidladapter",
-        "libhidlbase",
-        "libhidltransport",
-        "libutils",
-        "android.hardware.tests.expression@1.0",
-        "android.hardware.tests.expression@1.0-adapter-helper",
-    ],
-    generated_sources: ["android.hardware.tests.expression@1.0-adapter_genc++"],
-}