Add rust_test and update TEST_MAPPING am: 991f72b477 am: 13bd94f696 am: 538b03250e am: cce8d3eb5f

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/rand_core/+/1365398

Change-Id: If50700f63ac758a907686192f4b7902b28e193c5
diff --git a/Android.bp b/Android.bp
index e78ff16..318aa5b 100644
--- a/Android.bp
+++ b/Android.bp
@@ -1,4 +1,4 @@
-// This file is generated by cargo2android.py --device --run --features=std --dependencies.
+// This file is generated by cargo2android.py --device --run --features=std --dependencies --tests.
 
 rust_library {
     name: "librand_core",
@@ -16,6 +16,34 @@
     ],
 }
 
+rust_defaults {
+    name: "rand_core_defaults",
+    crate_name: "rand_core",
+    test_suites: ["general-tests"],
+    auto_gen_config: true,
+    edition: "2018",
+    features: [
+        "alloc",
+        "getrandom",
+        "std",
+    ],
+    rustlibs: [
+        "libgetrandom",
+    ],
+}
+
+rust_test_host {
+    name: "rand_core_host_test_src_lib",
+    defaults: ["rand_core_defaults"],
+    srcs: ["src/lib.rs"],
+}
+
+rust_test {
+    name: "rand_core_device_test_src_lib",
+    defaults: ["rand_core_defaults"],
+    srcs: ["src/lib.rs"],
+}
+
 // dependent_library ["feature_list"]
 //   cfg-if-0.1.10
 //   getrandom-0.1.14 "std"
diff --git a/TEST_MAPPING b/TEST_MAPPING
new file mode 100644
index 0000000..d13b08f
--- /dev/null
+++ b/TEST_MAPPING
@@ -0,0 +1,12 @@
+// Generated by cargo2android.py for tests in Android.bp
+{
+  "presubmit": [
+    {
+      "name": "rand_core_host_test_src_lib",
+      "host": true
+    },
+    {
+      "name": "rand_core_device_test_src_lib"
+    }
+  ]
+}