diff --git a/audio_streams/Android.bp b/audio_streams/Android.bp
index 95b816b..cbb6743 100644
--- a/audio_streams/Android.bp
+++ b/audio_streams/Android.bp
@@ -1,7 +1,18 @@
+// This file is generated by cargo2android.py, added defaults.
+
+rust_test_host {
+    name: "audio_streams_tests_audio_streams",
+    defaults: ["crosvm_defaults"],
+    crate_name: "audio_streams",
+    srcs: ["src/audio_streams.rs"],
+    relative_install_path: "audio_streams_tests",
+    test_suites: ["general-tests"],
+    auto_gen_config: true,
+}
+
 rust_library_host_rlib {
     name: "libaudio_streams",
     defaults: ["crosvm_defaults"],
-    deny_warnings: false,
     crate_name: "audio_streams",
     srcs: ["src/audio_streams.rs"],
 }
diff --git a/audio_streams/TEST_MAPPING b/audio_streams/TEST_MAPPING
new file mode 100644
index 0000000..ce60830
--- /dev/null
+++ b/audio_streams/TEST_MAPPING
@@ -0,0 +1,8 @@
+{
+  "presubmit": [
+    {
+      "name": "audio_streams_tests_audio_streams",
+      "host": true
+    }
+  ]
+}
diff --git a/cras/client/cras-sys/Android.bp b/cras/client/cras-sys/Android.bp
index 46ed7b8..2a90f8f 100644
--- a/cras/client/cras-sys/Android.bp
+++ b/cras/client/cras-sys/Android.bp
@@ -1,9 +1,26 @@
+// This file is generated by cargo2android.py, added defaults.
+
+rust_test_host {
+    name: "cras-sys_tests_cras_sys",
+    defaults: ["crosvm_defaults"],
+    crate_name: "cras_sys",
+    srcs: ["src/lib.rs"],
+    relative_install_path: "cras-sys_tests",
+    test_suites: ["general-tests"],
+    auto_gen_config: true,
+    edition: "2015",
+    rlibs: [
+        "libdata_model",
+    ],
+}
+
 rust_library_host_rlib {
     name: "libcras_sys",
     defaults: ["crosvm_defaults"],
-    deny_warnings: false,
     crate_name: "cras_sys",
-    edition: "2015",
-    rlibs: ["libdata_model"],
     srcs: ["src/lib.rs"],
+    edition: "2015",
+    rlibs: [
+        "libdata_model",
+    ],
 }
diff --git a/cras/client/cras-sys/TEST_MAPPING b/cras/client/cras-sys/TEST_MAPPING
new file mode 100644
index 0000000..3c63a45
--- /dev/null
+++ b/cras/client/cras-sys/TEST_MAPPING
@@ -0,0 +1,8 @@
+{
+  "presubmit": [
+    {
+      "name": "cras-sys_tests_cras_sys",
+      "host": true
+    }
+  ]
+}
diff --git a/cras/client/libcras/Android.bp b/cras/client/libcras/Android.bp
index f397191..33c4ddb 100644
--- a/cras/client/libcras/Android.bp
+++ b/cras/client/libcras/Android.bp
@@ -1,3 +1,23 @@
+// This file is generated by cargo2android.py, added defaults.
+
+rust_test_host {
+    name: "libcras_tests_libcras",
+    defaults: ["crosvm_defaults"],
+    deny_warnings: false,
+    crate_name: "libcras",
+    srcs: ["src/libcras.rs"],
+    relative_install_path: "libcras_tests",
+    test_suites: ["general-tests"],
+    auto_gen_config: true,
+    rlibs: [
+        "libaudio_streams",
+        "libcras_sys",
+        "libdata_model",
+        "liblibc",
+        "libsys_util",
+    ],
+}
+
 rust_library_host_rlib {
     name: "liblibcras",
     defaults: ["crosvm_defaults"],
@@ -5,10 +25,10 @@
     crate_name: "libcras",
     srcs: ["src/libcras.rs"],
     rlibs: [
-        "liblibc",
         "libaudio_streams",
         "libcras_sys",
         "libdata_model",
+        "liblibc",
         "libsys_util",
     ],
 }
diff --git a/cras/client/libcras/TEST_MAPPING b/cras/client/libcras/TEST_MAPPING
new file mode 100644
index 0000000..ecddeeb
--- /dev/null
+++ b/cras/client/libcras/TEST_MAPPING
@@ -0,0 +1,8 @@
+{
+  "presubmit": [
+    {
+      "name": "libcras_tests_libcras",
+      "host": true
+    }
+  ]
+}