1 package com.android.launcher3.util; 2 3 import android.test.suitebuilder.annotation.SmallTest; 4 5 import junit.framework.TestCase; 6 7 /** 8 * Unit tests for {@link GridOccupancy} 9 */ 10 @SmallTest 11 public class GridOccupancyTest extends TestCase { 12 13 public void testFindVacantCell() { 14 GridOccupancy grid = initGrid(4, 15 1, 1, 1, 0, 0, 16 0, 0, 1, 1, 0, 17 0, 0, 0, 0, 0, 18 1, 1, 0, 0, 0 19 ); 20 21 int[] vacant = new int[2]; 22 assertTrue(grid.findVacantCell(vacant, 2, 2)); 23 assertEquals(vacant[0], 0); 24 assertEquals(vacant[1], 1); 25 26 assertTrue(grid.findVacantCell(vacant, 3, 2)); 27 assertEquals(vacant[0], 2); 28 assertEquals(vacant[1], 2); 29 30 assertFalse(grid.findVacantCell(vacant, 3, 3)); 31 } 32 33 public void testIsRegionVacant() { 34 GridOccupancy grid = initGrid(4, 35 1, 1, 1, 0, 0, 36 0, 0, 1, 1, 0, 37 0, 0, 0, 0, 0, 38 1, 1, 0, 0, 0 39 ); 40 41 assertTrue(grid.isRegionVacant(4, 0, 1, 4)); 42 assertTrue(grid.isRegionVacant(0, 1, 2, 2)); 43 assertTrue(grid.isRegionVacant(2, 2, 3, 2)); 44 45 assertFalse(grid.isRegionVacant(3, 0, 2, 4)); 46 assertFalse(grid.isRegionVacant(0, 0, 2, 1)); 47 } 48 49 private GridOccupancy initGrid(int rows, int... cells) { 50 int cols = cells.length / rows; 51 int i = 0; 52 GridOccupancy grid = new GridOccupancy(cols, rows); 53 for (int y = 0; y < rows; y++) { 54 for (int x = 0; x < cols; x++) { 55 grid.cells[x][y] = cells[i] != 0; 56 i++; 57 } 58 } 59 return grid; 60 } 61 } 62
