/*
 * Copyright (C) 2014 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.
 */

package androidx.test.annotation;

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

/**
 * Methods annotated with this annotation will be executed on the application's UI thread (or main
 * thread).
 *
 * <p>This annotation will only take effect for {@link org.junit.Test}, {@link org.junit.Before} or
 * {@link org.junit.After} methods.
 *
 * @see androidx.test.rule.ActivityTestRule#runOnUiThread(Runnable) if you need to switch in
 *     and out of the UI thread within your method.
 */
@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
public @interface UiThreadTest {}

/*
 * Copyright (C) 2014 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.
 */

package androidx.test.annotation;

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

/**
 * Methods annotated with this annotation will be executed on the application's UI thread (or main
 * thread).
 *
 * <p>This annotation will only take effect for {@link org.junit.Test}, {@link org.junit.Before} or
 * {@link org.junit.After} methods.
 *
 * <p>Use {@link android.app.Instrumentation#runOnMainSync(Runnable)} if you need to switch in and
 * out of the UI thread within your method.
 */
@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
public @interface UiThreadTest {}

Switch reference from about-to-be-deprecated ActivityTestRule to Instrumentation#runOnMainSync, and fix formatting.