diff --git a/tests/bar/1.0/Android.bp b/tests/bar/1.0/Android.bp
index 6ef8ac2..e4c79fa 100644
--- a/tests/bar/1.0/Android.bp
+++ b/tests/bar/1.0/Android.bp
@@ -6,10 +6,12 @@
     cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.tests.bar@1.0",
     srcs: [
         "IBar.hal",
+        "IComplicated.hal",
         "IImportTypes.hal",
     ],
     out: [
         "android/hardware/tests/bar/1.0/BarAll.cpp",
+        "android/hardware/tests/bar/1.0/ComplicatedAll.cpp",
         "android/hardware/tests/bar/1.0/ImportTypesAll.cpp",
     ],
 }
@@ -20,6 +22,7 @@
     cmd: "$(location hidl-gen) -o $(genDir) -Lc++ -randroid.hardware:hardware/interfaces -randroid.hidl:system/libhidl/transport android.hardware.tests.bar@1.0",
     srcs: [
         "IBar.hal",
+        "IComplicated.hal",
         "IImportTypes.hal",
     ],
     out: [
@@ -28,6 +31,11 @@
         "android/hardware/tests/bar/1.0/BnBar.h",
         "android/hardware/tests/bar/1.0/BpBar.h",
         "android/hardware/tests/bar/1.0/BsBar.h",
+        "android/hardware/tests/bar/1.0/IComplicated.h",
+        "android/hardware/tests/bar/1.0/IHwComplicated.h",
+        "android/hardware/tests/bar/1.0/BnComplicated.h",
+        "android/hardware/tests/bar/1.0/BpComplicated.h",
+        "android/hardware/tests/bar/1.0/BsComplicated.h",
         "android/hardware/tests/bar/1.0/IImportTypes.h",
         "android/hardware/tests/bar/1.0/IHwImportTypes.h",
         "android/hardware/tests/bar/1.0/BnImportTypes.h",
diff --git a/tests/bar/1.0/IBar.hal b/tests/bar/1.0/IBar.hal
index 21c3473..5f94d07 100644
--- a/tests/bar/1.0/IBar.hal
+++ b/tests/bar/1.0/IBar.hal
@@ -17,9 +17,12 @@
 package android.hardware.tests.bar@1.0;
 
 import android.hardware.tests.foo@1.0::IFoo;
+import android.hardware.tests.foo@1.0::ISimple;
 import android.hardware.tests.foo@1.0::Abc;
 import android.hardware.tests.foo@1.0::Unrelated;
 
+import IComplicated;
+
 interface IBar extends android.hardware.tests.foo@1.0::IFoo {
 
     typedef android.hardware.tests.foo@1.0::IFoo FunkyAlias;
@@ -33,4 +36,6 @@
     expectNullHandle(handle h, Abc xyz) generates (bool hIsNull, bool xyzHasNull);
     takeAMask(BitField bf, bitfield<BitField> first, MyMask second, Mask third)
             generates (BitField bf, uint8_t first, uint8_t second, uint8_t third);
+
+    haveAInterface(ISimple i) generates (ISimple i);
 };
diff --git a/tests/bar/1.0/IComplicated.hal b/tests/bar/1.0/IComplicated.hal
new file mode 100644
index 0000000..deaef8d
--- /dev/null
+++ b/tests/bar/1.0/IComplicated.hal
@@ -0,0 +1,22 @@
+/*
+ * Copyright (C) 2016 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.bar@1.0;
+
+import android.hardware.tests.foo@1.0::ISimple;
+
+interface IComplicated extends ISimple {
+};
diff --git a/tests/bar/1.0/default/Bar.cpp b/tests/bar/1.0/default/Bar.cpp
index a750fe4..4152bb9 100644
--- a/tests/bar/1.0/default/Bar.cpp
+++ b/tests/bar/1.0/default/Bar.cpp
@@ -165,6 +165,13 @@
     return Void();
 }
 
+Return<void> Bar::haveAInterface(const sp<ISimple> &in,
+            haveAInterface_cb _hidl_cb) {
+    _hidl_cb(in);
+    return Void();
+}
+
+
 IBar* HIDL_FETCH_IBar(const char* /* name */) {
     return new Bar();
 }
diff --git a/tests/bar/1.0/default/Bar.h b/tests/bar/1.0/default/Bar.h
index 71737fe..70bffe7 100644
--- a/tests/bar/1.0/default/Bar.h
+++ b/tests/bar/1.0/default/Bar.h
@@ -71,6 +71,8 @@
 
     Return<void> takeAMask(BitField bf, uint8_t first, const MyMask& second, uint8_t third,
             takeAMask_cb _hidl_cb) override;
+    Return<void> haveAInterface(const sp<ISimple> &in,
+            haveAInterface_cb _hidl_cb) override;
 
 private:
     sp<IFoo> mFoo;
diff --git a/tests/foo/1.0/ISimple.hal b/tests/foo/1.0/ISimple.hal
index 92e9d95..0d45835 100644
--- a/tests/foo/1.0/ISimple.hal
+++ b/tests/foo/1.0/ISimple.hal
@@ -18,4 +18,8 @@
 
 interface ISimple {
     getCookie() generates (int32_t cookie);
+    customVecInt() generates (vec<int32_t> chain);
+    customVecStr() generates (vec<string> chain);
+    mystr() generates (string str);
+    myhandle() generates (handle str);
 };