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/*
* Copyright (C) 2015 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.android.tv.common.ui.setup.leanback;
import android.test.AndroidTestCase;
import android.test.suitebuilder.annotation.SmallTest;
import com.android.tv.testing.Utils;
/**
* Tests for {@link PagingIndicator}.
*/
@SmallTest
public class PagingIndicatorTest extends AndroidTestCase {
private PagingIndicator mIndicator;
@Override
protected void setUp() throws Exception {
super.setUp();
Utils.runOnMainSync(new Runnable() {
@Override
public void run() {
mIndicator = new PagingIndicator(getContext());
}
});
}
public void testDotPosition() {
mIndicator.setPageCount(3);
assertDotPosition();
mIndicator.setPageCount(6);
assertDotPosition();
mIndicator.setPageCount(9);
assertDotPosition();
}
private void assertDotPosition() {
assertSymmetry();
assertDistance();
}
private void assertSymmetry() {
int pageCount = mIndicator.getPageCount();
int mid = pageCount / 2;
int[] selectedX = mIndicator.getDotSelectedX();
int sum = selectedX[0] + selectedX[pageCount - 1];
for (int i = 1; i <= mid; ++i) {
assertEquals("Selected dots are not symmetric", sum,
selectedX[i] + selectedX[pageCount - i - 1]);
}
int[] leftX = mIndicator.getDotSelectedLeftX();
int[] rightX = mIndicator.getDotSelectedRightX();
sum = leftX[0] + rightX[pageCount - 1];
for (int i = 1; i < pageCount - 1; ++i) {
assertEquals("Deselected dots are not symmetric", sum,
leftX[i] + rightX[pageCount - i - 1]);
}
}
private void assertDistance() {
int pageCount = mIndicator.getPageCount();
int[] selectedX = mIndicator.getDotSelectedX();
int[] leftX = mIndicator.getDotSelectedLeftX();
int[] rightX = mIndicator.getDotSelectedRightX();
int distance = selectedX[1] - selectedX[0];
for (int i = 2; i < pageCount; ++i) {
assertEquals("Gaps between selected dots are not even", distance,
selectedX[i] - selectedX[i - 1]);
}
distance = leftX[1] - leftX[0];
for (int i = 2; i < pageCount - 1; ++i) {
assertEquals("Gaps between left dots are not even", distance,
leftX[i] - leftX[i - 1]);
}
distance = rightX[2] - rightX[1];
for (int i = 3; i < pageCount; ++i) {
assertEquals("Gaps between right dots are not even", distance,
rightX[i] - rightX[i - 1]);
}
}
}
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