Add tests.

Bug: 256582545
Test: unit-test & local build gallery
Change-Id: Icd7ce7e2256f6f79953e48d52f436ddecb915fe2
diff --git a/packages/SettingsLib/Spa/tests/Android.bp b/packages/SettingsLib/Spa/tests/Android.bp
index 69740058..f9e64ae 100644
--- a/packages/SettingsLib/Spa/tests/Android.bp
+++ b/packages/SettingsLib/Spa/tests/Android.bp
@@ -22,7 +22,10 @@
     name: "SpaLibTests",
     test_suites: ["device-tests"],
 
-    srcs: ["src/**/*.kt"],
+    srcs: [
+        ":SpaLib_srcs",
+        "src/**/*.kt",
+    ],
 
     static_libs: [
         "SpaLib",