Configure existing WPP2 Robolectric tests to run with atest.

Also moves Robolectric tests into directory under tests/ for similar
structure to other test code in the wider codebase.

Bug: 260777356
Test: this is the test
Change-Id: Ie3190ccb9875cda80f5b576bf999bf71d8a25d53
Merged-In: Ie3190ccb9875cda80f5b576bf999bf71d8a25d53
diff --git a/robolectric_tests/Android.mk b/robolectric_tests/Android.mk
deleted file mode 100644
index 666c08d..0000000
--- a/robolectric_tests/Android.mk
+++ /dev/null
@@ -1,59 +0,0 @@
-# Copyright (C) 2019 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.
-
-#############################################
-# WallPaperPicker2 Robolectric test target. #
-#############################################
-LOCAL_PATH := $(call my-dir)
-include $(CLEAR_VARS)
-
-LOCAL_MODULE := WallPaperPicker2RoboTests
-LOCAL_LICENSE_KINDS := SPDX-license-identifier-Apache-2.0
-LOCAL_LICENSE_CONDITIONS := notice
-LOCAL_SDK_VERSION := current
-LOCAL_SRC_FILES := $(call all-java-files-under, src)
-LOCAL_STATIC_JAVA_LIBRARIES := \
-    androidx.test.runner \
-    androidx.test.rules \
-    mockito-robolectric-prebuilt \
-    truth-prebuilt
-LOCAL_JAVA_LIBRARIES := \
-    platform-robolectric-3.6.2-prebuilt
-
-LOCAL_JAVA_RESOURCE_DIRS := config
-
-LOCAL_INSTRUMENTATION_FOR := WallpaperPicker2
-LOCAL_MODULE_TAGS := optional
-
-include $(BUILD_STATIC_JAVA_LIBRARY)
-
-############################################
-# Target to run the previous target.       #
-############################################
-include $(CLEAR_VARS)
-
-LOCAL_MODULE := RunWallPaperPicker2RoboTests
-LOCAL_LICENSE_KINDS := SPDX-license-identifier-Apache-2.0
-LOCAL_LICENSE_CONDITIONS := notice
-LOCAL_SDK_VERSION := current
-LOCAL_JAVA_LIBRARIES := \
-    WallPaperPicker2RoboTests
-
-LOCAL_TEST_PACKAGE := WallpaperPicker2
-
-LOCAL_INSTRUMENT_SOURCE_DIRS := packages/apps/WallpaperPicker2/src \
-
-LOCAL_ROBOTEST_TIMEOUT := 36000
-
-include prebuilts/misc/common/robolectric/3.6.2/run_robotests.mk
diff --git a/robolectric_tests/config/robolectric.properties b/robolectric_tests/config/robolectric.properties
deleted file mode 100644
index c222b11..0000000
--- a/robolectric_tests/config/robolectric.properties
+++ /dev/null
@@ -1,2 +0,0 @@
-manifest=packages/apps/WallpaperPicker2/AndroidManifest.xml
-sdk=27
diff --git a/robolectric_tests/robolectric_gradle_config/robolectric.properties b/robolectric_tests/robolectric_gradle_config/robolectric.properties
deleted file mode 100644
index 2916ca9..0000000
--- a/robolectric_tests/robolectric_gradle_config/robolectric.properties
+++ /dev/null
@@ -1,3 +0,0 @@
-# Do not include the manifest definition in this version
-# as it is specified directly in the gradle file
-sdk=31
\ No newline at end of file
diff --git a/tests/robotests/Android.bp b/tests/robotests/Android.bp
new file mode 100644
index 0000000..37fb21a
--- /dev/null
+++ b/tests/robotests/Android.bp
@@ -0,0 +1,22 @@
+package {
+    default_applicable_licenses: ["Android-Apache-2.0"],
+}
+
+android_robolectric_test {
+    enabled: true,
+
+    name: "WallpaperPicker2RoboTests",
+
+    srcs: [
+        "src/**/*.java",
+    ],
+
+    java_resource_dirs: ["config"],
+
+    libs: [
+        "androidx.test.core",
+        "androidx.test.runner",
+    ],
+
+    instrumentation_for: "WallpaperPicker2",
+}
diff --git a/tests/robotests/AndroidManifest.xml b/tests/robotests/AndroidManifest.xml
new file mode 100644
index 0000000..0909593
--- /dev/null
+++ b/tests/robotests/AndroidManifest.xml
@@ -0,0 +1,6 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.android.wallpaper">
+
+    <application/>
+
+</manifest>
diff --git a/tests/robotests/config/robolectric.properties b/tests/robotests/config/robolectric.properties
new file mode 100644
index 0000000..fab7251
--- /dev/null
+++ b/tests/robotests/config/robolectric.properties
@@ -0,0 +1 @@
+sdk=NEWEST_SDK
diff --git a/robolectric_tests/src/com/android/wallpaper/picker/BaseActivityTest.java b/tests/robotests/src/com/android/wallpaper/picker/BaseActivityTest.java
similarity index 100%
rename from robolectric_tests/src/com/android/wallpaper/picker/BaseActivityTest.java
rename to tests/robotests/src/com/android/wallpaper/picker/BaseActivityTest.java