Add tests

Map tests into presubmit.

Test: atest lock_api_host_test_src_lib
      atest lock_api_device_test_src_lib
Change-Id: Iedd0e3892d88399949c2f569c8ec8ca19f171298
diff --git a/Android.bp b/Android.bp
index 9d2a0ae..e2e9c98 100644
--- a/Android.bp
+++ b/Android.bp
@@ -1,4 +1,4 @@
-// This file is generated by cargo2android.py --run --device --dependencies.
+// This file is generated by cargo2android.py --run --device --dependencies --tests.
 
 rust_library {
     name: "liblock_api",
@@ -11,5 +11,27 @@
     ],
 }
 
+rust_defaults {
+    name: "lock_api_defaults",
+    crate_name: "lock_api",
+    srcs: ["src/lib.rs"],
+    test_suites: ["general-tests"],
+    auto_gen_config: true,
+    edition: "2018",
+    rustlibs: [
+        "libscopeguard",
+    ],
+}
+
+rust_test_host {
+    name: "lock_api_host_test_src_lib",
+    defaults: ["lock_api_defaults"],
+}
+
+rust_test {
+    name: "lock_api_device_test_src_lib",
+    defaults: ["lock_api_defaults"],
+}
+
 // dependent_library ["feature_list"]
 //   scopeguard-1.1.0
diff --git a/TEST_MAPPING b/TEST_MAPPING
new file mode 100644
index 0000000..11bb723
--- /dev/null
+++ b/TEST_MAPPING
@@ -0,0 +1,12 @@
+// Generated by cargo2android.py for tests in Android.bp
+{
+  "presubmit": [
+    {
+      "name": "lock_api_host_test_src_lib",
+      "host": true
+    },
+    {
+      "name": "lock_api_device_test_src_lib"
+    }
+  ]
+}