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  • 单元测试-黑和测试-等价测试用例 示意

    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 }
    View Code

    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 }
    View Code

    测试结果

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  • 原文地址:https://www.cnblogs.com/dennr/p/5274401.html
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