Add target for ThemePicker instrumented tests

Bug: 249505965
Test: TreeHugger, manually compiled and ran picker
Change-Id: I94db497048a849545a73c8f8314707b3277216f8
diff --git a/tests/Android.bp b/tests/Android.bp
new file mode 100644
index 0000000..9fed740
--- /dev/null
+++ b/tests/Android.bp
@@ -0,0 +1,47 @@
+// Copyright (C) 2022 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.
+//
+
+//
+// Build rule for WallpaperPicker2 tests
+//
+package {
+    default_applicable_licenses: ["Android-Apache-2.0"],
+}
+
+android_test {
+    name: "ThemePickerTests",
+
+    defaults: ["ThemePicker_defaults"],
+    srcs: [
+        "src/**/*.java",
+        "src/**/*.kt",
+    ],
+    static_libs: [
+        "WallpaperPicker2TestLib",
+        "androidx.test.rules",
+        "junit",
+        "kotlinx_coroutines_test",
+        "truth-prebuilt",
+    ],
+    libs: [
+        "android.test.runner",
+        "android.test.base",
+        "android.test.mock",
+    ],
+
+    kotlincflags: ["-Xjvm-default=enable"],
+    platform_apis: true,
+    test_suites: ["device-tests"],
+}