/*
* Copyright (C) 2007 The Android Open Source Project
*
* 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 android.view;
import com.android.frameworks.coretests.R;
import android.view.ViewGroupChildren;
import android.test.ActivityInstrumentationTestCase;
import android.test.suitebuilder.annotation.MediumTest;
import android.test.ViewAsserts;
import android.test.UiThreadTest;
import android.view.View;
import android.view.ViewGroup;
import android.widget.LinearLayout;
import android.widget.TextView;
/**
* Exercises {@link android.view.ViewGroup}'s ability to add/remove children.
*/
public class ViewGroupChildrenTest extends ActivityInstrumentationTestCase<ViewGroupChildren> {
private ViewGroup mGroup;
public ViewGroupChildrenTest() {
super("com.android.frameworks.coretests", ViewGroupChildren.class);
}
@Override
public void setUp() throws Exception {
super.setUp();
final ViewGroupChildren a = getActivity();
mGroup = (ViewGroup) a.findViewById(R.id.group);
}
@MediumTest
public void testSetUpConditions() throws Exception {
assertNotNull(mGroup);
}
@MediumTest
public void testStartsEmpty() throws Exception {
assertEquals("A ViewGroup should have no child by default", 0, mGroup.getChildCount());
}
@UiThreadTest
@MediumTest
public void testAddChild() throws Exception {
View view = createView("1");
mGroup.addView(view);
assertEquals(1, mGroup.getChildCount());
ViewAsserts.assertGroupIntegrity(mGroup);
ViewAsserts.assertGroupContains(mGroup, view);
}
@UiThreadTest
@MediumTest
public void testAddChildAtFront() throws Exception {
// 24 should be greater than ViewGroup.ARRAY_CAPACITY_INCREMENT
for (int i = 0; i < 24; i++) {
View view = createView(String.valueOf(i + 1));
mGroup.addView(view);
}
View view = createView("X");
mGroup.addView(view, 0);
assertEquals(25, mGroup.getChildCount());
ViewAsserts.assertGroupIntegrity(mGroup);
ViewAsserts.assertGroupContains(mGroup, view);
assertSame(view, mGroup.getChildAt(0));
}
@UiThreadTest
@MediumTest
public void testAddChildInMiddle() throws Exception {
// 24 should be greater than ViewGroup.ARRAY_CAPACITY_INCREMENT
for (int i = 0; i < 24; i++) {
View view = createView(String.valueOf(i + 1));
mGroup.addView(view);
}
View view = createView("X");
mGroup.addView(view, 12);
assertEquals(25, mGroup.getChildCount());
ViewAsserts.assertGroupIntegrity(mGroup);
ViewAsserts.assertGroupContains(mGroup, view);
assertSame(view, mGroup.getChildAt(12));
}
@UiThreadTest
@MediumTest
public void testAddChildren() throws Exception {
// 24 should be greater than ViewGroup.ARRAY_CAPACITY_INCREMENT
for (int i = 0; i < 24; i++) {
View view = createView(String.valueOf(i + 1));
mGroup.addView(view);
ViewAsserts.assertGroupContains(mGroup, view);
}
assertEquals(24, mGroup.getChildCount());
}
@UiThreadTest
@MediumTest
public void testRemoveChild() throws Exception {
View view = createView("1");
mGroup.addView(view);
ViewAsserts.assertGroupIntegrity(mGroup);
mGroup.removeView(view);
ViewAsserts.assertGroupIntegrity(mGroup);
ViewAsserts.assertGroupNotContains(mGroup, view);
assertEquals(0, mGroup.getChildCount());
assertNull(view.getParent());
}
@UiThreadTest
@MediumTest
public void testRemoveChildren() throws Exception {
// 24 should be greater than ViewGroup.ARRAY_CAPACITY_INCREMENT
final View[] views = new View[24];
for (int i = 0; i < views.length; i++) {
views[i] = createView(String.valueOf(i + 1));
mGroup.addView(views[i]);
}
for (int i = views.length - 1; i >= 0; i--) {
mGroup.removeViewAt(i);
ViewAsserts.assertGroupIntegrity(mGroup);
ViewAsserts.assertGroupNotContains(mGroup, views[i]);
assertNull(views[i].getParent());
}
assertEquals(0, mGroup.getChildCount());
}
@UiThreadTest
@MediumTest
public void testRemoveChildrenBulk() throws Exception {
// 24 should be greater than ViewGroup.ARRAY_CAPACITY_INCREMENT
final View[] views = new View[24];
for (int i = 0; i < views.length; i++) {
views[i] = createView(String.valueOf(i + 1));
mGroup.addView(views[i]);
}
mGroup.removeViews(6, 7);
ViewAsserts.assertGroupIntegrity(mGroup);
for (int i = 6; i < 13; i++) {
ViewAsserts.assertGroupNotContains(mGroup, views[i]);
assertNull(views[i].getParent());
}
assertEquals(17, mGroup.getChildCount());
}
@UiThreadTest
@MediumTest
public void testRemoveChildrenBulkAtFront() throws Exception {
// 24 should be greater than ViewGroup.ARRAY_CAPACITY_INCREMENT
final View[] views = new View[24];
for (int i = 0; i < views.length; i++) {
views[i] = createView(String.valueOf(i + 1));
mGroup.addView(views[i]);
}
mGroup.removeViews(0, 7);
ViewAsserts.assertGroupIntegrity(mGroup);
for (int i = 0; i < 7; i++) {
ViewAsserts.assertGroupNotContains(mGroup, views[i]);
assertNull(views[i].getParent());
}
assertEquals("8", ((TextView) mGroup.getChildAt(0)).getText());
assertEquals(17, mGroup.getChildCount());
}
@UiThreadTest
@MediumTest
public void testRemoveChildrenBulkAtEnd() throws Exception {
// 24 should be greater than ViewGroup.ARRAY_CAPACITY_INCREMENT
final View[] views = new View[24];
for (int i = 0; i < views.length; i++) {
views[i] = createView(String.valueOf(i + 1));
mGroup.addView(views[i]);
}
mGroup.removeViews(17, 7);
ViewAsserts.assertGroupIntegrity(mGroup);
for (int i = 17; i < 24; i++) {
ViewAsserts.assertGroupNotContains(mGroup, views[i]);
assertNull(views[i].getParent());
}
assertEquals("17", ((TextView) mGroup.getChildAt(mGroup.getChildCount() - 1)).getText());
assertEquals(17, mGroup.getChildCount());
}
@UiThreadTest
@MediumTest
public void testRemoveChildAtFront() throws Exception {
// 24 should be greater than ViewGroup.ARRAY_CAPACITY_INCREMENT
final View[] views = new View[24];
for (int i = 0; i < views.length; i++) {
views[i] = createView(String.valueOf(i + 1));
mGroup.addView(views[i]);
}
mGroup.removeViewAt(0);
ViewAsserts.assertGroupIntegrity(mGroup);
ViewAsserts.assertGroupNotContains(mGroup, views[0]);
assertNull(views[0].getParent());
assertEquals(views.length - 1, mGroup.getChildCount());
}
@UiThreadTest
@MediumTest
public void testRemoveChildInMiddle() throws Exception {
// 24 should be greater than ViewGroup.ARRAY_CAPACITY_INCREMENT
final View[] views = new View[24];
for (int i = 0; i < views.length; i++) {
views[i] = createView(String.valueOf(i + 1));
mGroup.addView(views[i]);
}
mGroup.removeViewAt(12);
ViewAsserts.assertGroupIntegrity(mGroup);
ViewAsserts.assertGroupNotContains(mGroup, views[12]);
assertNull(views[12].getParent());
assertEquals(views.length - 1, mGroup.getChildCount());
}
private TextView createView(String text) {
TextView view = new TextView(getActivity());
view.setText(text);
view.setLayoutParams(new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.MATCH_PARENT,
LinearLayout.LayoutParams.WRAP_CONTENT
));
return view;
}
}
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