1 /* 2 * Copyright (C) 2012 Google Inc. 3 * Licensed to The Android Open Source Project. 4 * 5 * Licensed under the Apache License, Version 2.0 (the "License"); 6 * you may not use this file except in compliance with the License. 7 * You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18 package com.android.mail.ui; 19 20 import android.os.Bundle; 21 import android.test.AndroidTestCase; 22 import android.test.suitebuilder.annotation.SmallTest; 23 import android.test.suitebuilder.annotation.Smoke; 24 25 import com.android.mail.ui.ViewMode.ModeChangeListener; 26 27 @Smoke 28 public class ViewModeTests extends AndroidTestCase { 29 /** 30 * Saving and restoring a view mode work correctly. 31 */ 32 @SmallTest 33 public void testBundleSaveRestorePreserveState() { 34 Bundle state = new Bundle(); 35 ViewMode first = new ViewMode(); 36 // Set the state to something known. 37 first.enterConversationListMode(); 38 first.handleSaveInstanceState(state); 39 ViewMode second = new ViewMode(); 40 second.handleRestore(state); 41 assertEquals(ViewMode.CONVERSATION_LIST, second.getMode()); 42 } 43 44 /** 45 * Register a listener for mode changes. Change a mode, and verify that the listener was 46 * called. Then unregister the listener and change the mode again. Verify that the listener 47 * was NOT called. 48 */ 49 @SmallTest 50 public void testListenerCalledAfterRegistering() { 51 class Ears implements ModeChangeListener { 52 public int numCalls = 0; 53 @Override 54 public void onViewModeChanged(int mode) { 55 numCalls++; 56 } 57 } 58 59 ViewMode mode = new ViewMode(); 60 Ears ears = new Ears(); 61 mode.addListener(ears); 62 mode.enterConversationListMode(); 63 assertEquals(ears.numCalls, 1); 64 mode.removeListener(ears); 65 mode.enterConversationMode(); 66 assertEquals(ears.numCalls, 1); 67 } 68 69 /** 70 * The view mode can transition to a state only if it isn't already in that state. 71 */ 72 @SmallTest 73 public void testMultipleTransitionsFail() { 74 ViewMode first = new ViewMode(); 75 // Set the state to something known. 76 first.enterConversationListMode(); 77 assertEquals(ViewMode.CONVERSATION_LIST, first.getMode()); 78 // Cannot transition to Conversation List mode. I'm in it already. 79 first.enterConversationListMode(); 80 assertEquals(ViewMode.CONVERSATION_LIST, first.getMode()); 81 } 82 }