1 /* 2 * Copyright (C) 2013 DroidDriver committers 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 io.appium.droiddriver.helpers; 18 19 import android.app.Activity; 20 import android.test.ActivityInstrumentationTestCase2; 21 import android.test.ActivityTestCase; 22 23 import java.lang.reflect.Field; 24 import java.lang.reflect.Modifier; 25 26 /** 27 * Fixes bugs in {@link ActivityInstrumentationTestCase2}. 28 */ 29 public abstract class D2ActivityInstrumentationTestCase2<T extends Activity> extends 30 ActivityInstrumentationTestCase2<T> { 31 protected D2ActivityInstrumentationTestCase2(Class<T> activityClass) { 32 super(activityClass); 33 } 34 35 /** 36 * Fixes a bug in {@link ActivityTestCase#scrubClass} that causes 37 * NullPointerException if your leaf-level test class declares static fields. 38 * This is <a href="https://code.google.com/p/android/issues/detail?id=4244">a 39 * known bug</a> that has been fixed in ICS Android release. But it still 40 * exists on devices older than ICS. If your test class extends this class, it 41 * can work on older devices. 42 * <p> 43 * In addition to the official fix in ICS and beyond, which skips 44 * {@code final} fields, the fix below also skips {@code static} fields, which 45 * should be the expectation of Java programmers. 46 * </p> 47 */ 48 @Override 49 protected void scrubClass(final Class<?> testCaseClass) throws IllegalAccessException { 50 final Field[] fields = getClass().getDeclaredFields(); 51 for (Field field : fields) { 52 final Class<?> fieldClass = field.getDeclaringClass(); 53 if (testCaseClass.isAssignableFrom(fieldClass) && !field.getType().isPrimitive() 54 && !Modifier.isFinal(field.getModifiers()) && !Modifier.isStatic(field.getModifiers())) { 55 try { 56 field.setAccessible(true); 57 field.set(this, null); 58 } catch (Exception e) { 59 android.util.Log.d("TestCase", "Error: Could not nullify field!"); 60 } 61 62 if (field.get(this) != null) { 63 android.util.Log.d("TestCase", "Error: Could not nullify field!"); 64 } 65 } 66 } 67 } 68 } 69
