diff --git a/tests/hostside/AndroidTest.xml b/tests/hostside/AndroidTest.xml
index eda733a..889fc4e 100644
--- a/tests/hostside/AndroidTest.xml
+++ b/tests/hostside/AndroidTest.xml
@@ -22,6 +22,38 @@
       a test-only permission, run it without selinux -->
     <target_preparer class="com.android.tradefed.targetprep.DisableSELinuxTargetPreparer"/>
 
+    <!-- Prepare test directory for AuthFsTestCase. -->
+    <target_preparer class="com.android.tradefed.targetprep.RunCommandTargetPreparer">
+        <option name="throw-if-cmd-fail" value="true" />
+        <!-- Prepare test directory. -->
+        <option name="run-command" value="mkdir -p /data/local/tmp/authfs/mnt" />
+        <option name="teardown-command" value="rm -rf /data/local/tmp/authfs" />
+    </target_preparer>
+
+    <!-- Prepare files for AuthFsTestCase. -->
+    <target_preparer class="com.android.tradefed.targetprep.PushFilePreparer">
+        <option name="cleanup" value="true" />
+        <option name="abort-on-push-failure" value="true" />
+        <option name="push-file" key="cert.der" value="/data/local/tmp/authfs/cert.der" />
+        <option name="push-file" key="input.4m" value="/data/local/tmp/authfs/input.4m" />
+        <option name="push-file" key="input.4k1" value="/data/local/tmp/authfs/input.4k1" />
+        <option name="push-file" key="input.4k" value="/data/local/tmp/authfs/input.4k" />
+        <option name="push-file" key="input.4m.fsv_sig"
+            value="/data/local/tmp/authfs/input.4m.fsv_sig" />
+        <option name="push-file" key="input.4k1.fsv_sig"
+            value="/data/local/tmp/authfs/input.4k1.fsv_sig" />
+        <option name="push-file" key="input.4k.fsv_sig"
+            value="/data/local/tmp/authfs/input.4k.fsv_sig" />
+        <option name="push-file" key="input.4m.merkle_dump"
+            value="/data/local/tmp/authfs/input.4m.merkle_dump" />
+        <option name="push-file" key="input.4m.merkle_dump.bad"
+            value="/data/local/tmp/authfs/input.4m.merkle_dump.bad" />
+        <option name="push-file" key="input.4k1.merkle_dump"
+            value="/data/local/tmp/authfs/input.4k1.merkle_dump" />
+        <option name="push-file" key="input.4k.merkle_dump"
+            value="/data/local/tmp/authfs/input.4k.merkle_dump" />
+    </target_preparer>
+
     <test class="com.android.compatibility.common.tradefed.testtype.JarHostTest" >
         <option name="jar" value="MicrodroidHostTestCases.jar" />
     </test>