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package com.android.launcher3.util;
import android.test.suitebuilder.annotation.SmallTest;
import junit.framework.TestCase;
/**
* Unit tests for {@link GridOccupancy}
*/
@SmallTest
public class GridOccupancyTest extends TestCase {
public void testFindVacantCell() {
GridOccupancy grid = initGrid(4,
1, 1, 1, 0, 0,
0, 0, 1, 1, 0,
0, 0, 0, 0, 0,
1, 1, 0, 0, 0
);
int[] vacant = new int[2];
assertTrue(grid.findVacantCell(vacant, 2, 2));
assertEquals(vacant[0], 0);
assertEquals(vacant[1], 1);
assertTrue(grid.findVacantCell(vacant, 3, 2));
assertEquals(vacant[0], 2);
assertEquals(vacant[1], 2);
assertFalse(grid.findVacantCell(vacant, 3, 3));
}
public void testIsRegionVacant() {
GridOccupancy grid = initGrid(4,
1, 1, 1, 0, 0,
0, 0, 1, 1, 0,
0, 0, 0, 0, 0,
1, 1, 0, 0, 0
);
assertTrue(grid.isRegionVacant(4, 0, 1, 4));
assertTrue(grid.isRegionVacant(0, 1, 2, 2));
assertTrue(grid.isRegionVacant(2, 2, 3, 2));
assertFalse(grid.isRegionVacant(3, 0, 2, 4));
assertFalse(grid.isRegionVacant(0, 0, 2, 1));
}
private GridOccupancy initGrid(int rows, int... cells) {
int cols = cells.length / rows;
int i = 0;
GridOccupancy grid = new GridOccupancy(cols, rows);
for (int y = 0; y < rows; y++) {
for (int x = 0; x < cols; x++) {
grid.cells[x][y] = cells[i] != 0;
i++;
}
}
return grid;
}
}
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