1 /* 2 * Copyright (C) 2023 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.testutils; 18 19 import android.annotation.NonNull; 20 21 /** 22 * Utilities to help Kotlin test to verify java @NonNull code 23 */ 24 public class NonNullTestUtils { 25 /** 26 * This method allows Kotlin to pass nullable to @NonNull java code for testing. 27 * For Foo(@NonNull arg) java method, Kotlin can pass nullable variable by 28 * Foo(NonNullTestUtils.nullUnsafe(nullableVar)). 29 */ nullUnsafe(T v)30 @NonNull public static <T> T nullUnsafe(T v) { 31 return v; 32 } 33 } 34