/*
* Copyright (C) 2008 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 com.example.android.apis.view;
import com.example.android.apis.R;
import android.content.Context;
import android.test.AndroidTestCase;
import android.test.suitebuilder.annotation.SmallTest;
import android.view.FocusFinder;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
/**
* This exercises the same logic as {@link Focus2ActivityTest} but in a lighter
* weight manner; it doesn't need to launch the activity, and it can test the
* focus behavior by calling {@link FocusFinder} methods directly.
*
* {@link Focus2ActivityTest} is still useful to verify that, at an end to end
* level, key events actually translate to focus transitioning in the way we expect.
* A good complementary way to use both types of tests might be to have more exhaustive
* coverage in the lighter weight test case, and a few end to end scenarios in the
* functional {@link android.test.ActivityInstrumentationTestCase}. This would provide reasonable
* assurance that the end to end system is working, while avoiding the overhead of
* having every corner case exercised in the slower, heavier weight way.
*
* Even as a lighter weight test, this test still needs access to a {@link Context}
* to inflate the file, which is why it extends {@link AndroidTestCase}.
*
* If you ever need a context to do your work in tests, you can extend
* {@link AndroidTestCase}, and when run via an {@link android.test.InstrumentationTestRunner},
* the context will be injected for you.
*
* See {@link com.example.android.apis.app.ForwardingTest} for an example of an Activity unit test.
*
* See {@link com.example.android.apis.AllTests} for documentation on running
* all tests and individual tests in this application.
*/
public class Focus2AndroidTest extends AndroidTestCase {
private FocusFinder mFocusFinder;
private ViewGroup mRoot;
private Button mLeftButton;
private Button mCenterButton;
private Button mRightButton;
@Override
protected void setUp() throws Exception {
super.setUp();
mFocusFinder = FocusFinder.getInstance();
// inflate the layout
final Context context = getContext();
final LayoutInflater inflater = LayoutInflater.from(context);
mRoot = (ViewGroup) inflater.inflate(R.layout.focus_2, null);
// manually measure it, and lay it out
mRoot.measure(500, 500);
mRoot.layout(0, 0, 500, 500);
mLeftButton = (Button) mRoot.findViewById(R.id.leftButton);
mCenterButton = (Button) mRoot.findViewById(R.id.centerButton);
mRightButton = (Button) mRoot.findViewById(R.id.rightButton);
}
/**
* The name 'test preconditions' is a convention to signal that if this
* test doesn't pass, the test case was not set up properly and it might
* explain any and all failures in other tests. This is not guaranteed
* to run before other tests, as junit uses reflection to find the tests.
*/
@SmallTest
public void testPreconditions() {
assertNotNull(mLeftButton);
assertTrue("center button should be right of left button",
mLeftButton.getRight() < mCenterButton.getLeft());
assertTrue("right button should be right of center button",
mCenterButton.getRight() < mRightButton.getLeft());
}
@SmallTest
public void testGoingRightFromLeftButtonJumpsOverCenterToRight() {
assertEquals("right should be next focus from left",
mRightButton,
mFocusFinder.findNextFocus(mRoot, mLeftButton, View.FOCUS_RIGHT));
}
@SmallTest
public void testGoingLeftFromRightButtonGoesToCenter() {
assertEquals("center should be next focus from right",
mCenterButton,
mFocusFinder.findNextFocus(mRoot, mRightButton, View.FOCUS_LEFT));
}
}