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 android.aidl.tests; 18 19 import android.aidl.tests.TestFailException; 20 import android.os.IBinder; 21 import java.util.ArrayList; 22 import java.util.List; 23 24 class NullableTests { 25 private static final String TAG = "TestServiceClient"; 26 private ITestService mService; 27 private TestLogger mLog; 28 29 public NullableTests(ITestService service, TestLogger logger) { 30 mService = service; 31 mLog = logger; 32 } 33 34 public void checkNullHandling() throws TestFailException { 35 mLog.log("Checking that sending null strings reports an error..."); 36 try { 37 String response = mService.RepeatString(null); 38 mLog.logAndThrow("Expected to fail on null string input!"); 39 } catch (NullPointerException ex) { 40 mLog.log("Caught an exception on null string parameter (expected)"); 41 mLog.log("null strings behave as expected"); 42 return; 43 } catch (Exception ex) { 44 mLog.logAndThrow("Expected to receive NullPointerException on " + 45 "null parameter, but got " + ex.toString()); 46 } 47 mLog.logAndThrow("Expected to receive NullPointerException on " + 48 "null parameter, but nothing was thrown??"); 49 } 50 51 public void checkNullBinderDetection() throws TestFailException { 52 mLog.log("Checking that service handles @nullable IBinder..."); 53 try { 54 mService.TakesAnIBinder(null); 55 mLog.logAndThrow("Expected to fail on null Binder!"); 56 } catch (NullPointerException ex) { 57 mLog.log("Caught an exception on null Binder parameter (expected)"); 58 return; 59 } catch (Exception ex) { 60 mLog.logAndThrow("Expected to receive NullPointerException," + 61 "but got " + ex.toString()); 62 } 63 mLog.logAndThrow("Expected to receive NullPointerException on " + 64 "null parameter, but nothing was thrown??"); 65 } 66 67 public void checkNullBinderInListDetection() throws TestFailException { 68 List<IBinder> listWithNulls = new ArrayList<IBinder>(); 69 listWithNulls.add(null); 70 try { 71 mService.TakesAnIBinderList(listWithNulls); 72 mLog.logAndThrow("Expected to fail on list with null Binder!"); 73 } catch (NullPointerException ex) { 74 mLog.log("Caught an exception on list with null Binder (expected)"); 75 return; 76 } catch (Exception ex) { 77 mLog.logAndThrow("Expected to receive NullPointerException," + 78 "but got " + ex.toString()); 79 } 80 mLog.logAndThrow("Expected to receive NullPointerException on " + 81 "null parameter, but nothing was thrown??"); 82 } 83 84 public void checkNullInterfaceHandling() throws TestFailException { 85 mLog.log("Checking @nullable IInterface handling..."); 86 try { 87 INamedCallback callback = mService.GetCallback(false); 88 if (callback == null) { 89 mLog.logAndThrow("Expected to get non-null INamedCallback."); 90 } 91 callback = mService.GetCallback(true); 92 if (callback != null) { 93 mLog.logAndThrow("Expected to get null INamedCallback."); 94 } 95 } catch (Exception ex) { 96 mLog.logAndThrow("Unexpected exception during @nullable IInterface test: " + 97 ex.toString()); 98 } 99 mLog.log("@nullable IInterface handling works as expected."); 100 } 101 102 public void runTests() throws TestFailException { 103 checkNullHandling(); 104 checkNullBinderDetection(); 105 checkNullBinderInListDetection(); 106 checkNullInterfaceHandling(); 107 } 108 } 109
