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/*
* Copyright (C) 2013 DroidDriver committers
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package io.appium.droiddriver.helpers;
import android.app.Activity;
import android.test.ActivityInstrumentationTestCase2;
import android.test.ActivityTestCase;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
/**
* Fixes bugs in {@link ActivityInstrumentationTestCase2}.
*/
public abstract class D2ActivityInstrumentationTestCase2<T extends Activity> extends
ActivityInstrumentationTestCase2<T> {
protected D2ActivityInstrumentationTestCase2(Class<T> activityClass) {
super(activityClass);
}
/**
* Fixes a bug in {@link ActivityTestCase#scrubClass} that causes
* NullPointerException if your leaf-level test class declares static fields.
* This is <a href="https://code.google.com/p/android/issues/detail?id=4244">a
* known bug</a> that has been fixed in ICS Android release. But it still
* exists on devices older than ICS. If your test class extends this class, it
* can work on older devices.
* <p>
* In addition to the official fix in ICS and beyond, which skips
* {@code final} fields, the fix below also skips {@code static} fields, which
* should be the expectation of Java programmers.
* </p>
*/
@Override
protected void scrubClass(final Class<?> testCaseClass) throws IllegalAccessException {
final Field[] fields = getClass().getDeclaredFields();
for (Field field : fields) {
final Class<?> fieldClass = field.getDeclaringClass();
if (testCaseClass.isAssignableFrom(fieldClass) && !field.getType().isPrimitive()
&& !Modifier.isFinal(field.getModifiers()) && !Modifier.isStatic(field.getModifiers())) {
try {
field.setAccessible(true);
field.set(this, null);
} catch (Exception e) {
android.util.Log.d("TestCase", "Error: Could not nullify field!");
}
if (field.get(this) != null) {
android.util.Log.d("TestCase", "Error: Could not nullify field!");
}
}
}
}
}
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