单元测试-黑和测试-等价测试用例 示意
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定义一个简单的功能要求,判断三角形是等边/等腰/一般三角形,要求边长在(1,100)范围;
准备测试代码
1 require_once("./triangle.class.php"); 2 3 function runTest($a, $b, $c){ 4 $triangle = new triangle($a, $b, $c); 5 echo $triangle->getSahpe() . ‘</br>‘; 6 }
准备黑盒等价测试用例
同测试结果图
开发功能代码
1 <?php 2 3 class triangle { 4 5 protected $a; 6 protected $b; 7 protected $c; 8 protected $errArray = array( 9 100 => ‘不能为空‘, 10 101 => ‘必须是数字‘, 11 102 => ‘必须大于1‘, 12 103 => ‘必须小于100‘, 13 104 => ‘2边之和必须大于第三边‘ 14 ); 15 protected $shapes = array( 16 ‘s101‘ => ‘等边三角形‘, 17 ‘s102‘ => ‘等腰三角形‘, 18 ‘s103‘ => ‘一般三角形‘, 19 ); 20 protected $return = null; 21 22 public function __construct($a, $b, $c) { 23 $this->a = $a; 24 $this->b = $b; 25 $this->c = $c; 26 27 $this->_checkEdge($a, ‘a‘); 28 if(!$this->return){ 29 $this->_checkEdge($b, ‘b‘); 30 } 31 if(!$this->return){ 32 $this->_checkEdge($c, ‘c‘); 33 } 34 if(!$this->return){ 35 $this->_checkEdges($a, $b, $c); 36 } 37 38 if(!$this->return){ 39 $this->_getShape(); 40 } 41 } 42 43 //检查三遍长度是否合法 44 protected function _checkEdge($param, $edge) { 45 if (empty($param)) { 46 $this->return = ‘边长‘ . $edge . $this->errArray[100]; 47 } elseif (!is_numeric($param)) { 48 $this->return = ‘边长‘ . $edge . $this->errArray[101]; 49 } elseif ($param <= 1) { 50 $this->return = ‘边长‘ . $edge . $this->errArray[102]; 51 } elseif ($param >= 100) { 52 $this->return = ‘边长‘ . $edge . $this->errArray[103]; 53 } 54 55 return true; 56 } 57 58 //检查三边之和 59 protected function _checkEdges($param1, $param2, $param3) { 60 $d1 = $param1 + $param2; 61 $d2 = $param1 + $param3; 62 $d3 = $param3 + $param2; 63 64 if (($d1 <= $param3) || ($d2 <= $param2) || ($d3 <= $param1)) { 65 $this->return = $this->errArray[104]; 66 } 67 68 return true; 69 } 70 71 //判断形状 72 protected function _getShape() { 73 if (($this->a == $this->b) && ($this->b == $this->c)) { 74 $this->return = $this->shapes[‘s101‘]; 75 } elseif (($this->a == $this->b) || ($this->a == $this->c) || ($this->c == $this->b)) { 76 $this->return = $this->shapes[‘s102‘]; 77 } else { 78 $this->return = $this->shapes[‘s103‘]; 79 } 80 } 81 82 //获取判断 83 public function getSahpe() { 84 return $this->return; 85 } 86 87 }
测试结果
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