1 /* 2 * Copyright (C) 2016 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.documentsui.testing; 18 19 import static junit.framework.Assert.assertFalse; 20 import static org.junit.Assert.assertEquals; 21 import static org.junit.Assert.assertTrue; 22 23 import com.android.documentsui.base.EventHandler; 24 25 import javax.annotation.Nullable; 26 27 /** 28 * Test {@link EventHandler} that can be used to spy on, control responses from, 29 * and make assertions against values tested. 30 */ 31 public class TestEventHandler<T> implements EventHandler<T> { 32 33 private @Nullable T lastValue; 34 private boolean nextReturnValue; 35 private boolean called; 36 37 @Override 38 public boolean accept(T event) { 39 called = true; 40 lastValue = event; 41 return nextReturnValue; 42 } 43 44 public void assertLastArgument(@Nullable T expected) { 45 assertEquals(expected, lastValue); 46 } 47 48 public void assertCalled() { 49 assertTrue(called); 50 } 51 52 public void assertNotCalled() { 53 assertFalse(called); 54 } 55 56 public void nextReturn(boolean value) { 57 nextReturnValue = value; 58 } 59 60 public @Nullable T getLastValue() { 61 return lastValue; 62 } 63 64 public void reset() { 65 called = false; 66 lastValue = null; 67 nextReturnValue = false; 68 } 69 } 70
