流程控制

Testing Is Documentation

tests/Flow/FlowControlTest.php流程控制 - 图1

QueryPHP 为流程控制类统一抽象了一个基础流程控制类 \Leevel\Flow\FlowControl，流程控制类可以轻松接入。

系统一些关键服务，比如说数据库查询条件、HTTP 响应等流程控制类均接入了统一的抽象层。

Uses

  1. <?php
  3. use Leevel\Flow\FlowControl;

基础使用方法

fixture 定义

Tests\Flow\Test1

  1. namespace Tests\Flow;
  3. class Test1
  4. {
  5.     use FlowControl;
  7.     protected $value = [];
  9.     public function __call(string $method, array $args)
  10.     {
  11.     }
  13.     public function value()
  14.     {
  15.         return implode(' ', $this->value);
  16.     }
  18.     public function condition1()
  19.     {
  20.         if ($this->checkFlowControl()) {
  21.             return $this;
  22.         }
  24.         $this->value[] = 'condition1';
  26.         return $this;
  27.     }
  29.     public function condition2()
  30.     {
  31.         if ($this->checkFlowControl()) {
  32.             return $this;
  33.         }
  35.         $this->value[] = 'condition2';
  37.         return $this;
  38.     }
  40.     public function condition3()
  41.     {
  42.         if ($this->checkFlowControl()) {
  43.             return $this;
  44.         }
  46.         $this->value[] = 'condition3';
  48.         return $this;
  49.     }
  51.     public function condition4()
  52.     {
  53.         if ($this->checkFlowControl()) {
  54.             return $this;
  55.         }
  57.         $this->value[] = 'condition4';
  59.         return $this;
  60.     }
  62.     public function condition5()
  63.     {
  64.         if ($this->checkFlowControl()) {
  65.             return $this;
  66.         }
  68.         $this->value[] = 'condition5';
  70.         return $this;
  71.     }
  72. }
  1. public function testBaseUse(): void
  2. {
  3.     $test = new Test1();
  5.     $this->assertSame('', $test->value());
  7.     $condition1 = 1;
  9.     $value = $test
  10.         ->if($condition1)
  11.         ->condition1()
  12.         ->else()
  13.         ->condition2()
  14.         ->fi()
  15.         ->value();
  17.     $this->assertSame('condition1', $value);
  18. }

else 条件语句

  1. public function testElse(): void
  2. {
  3.     $test = new Test1();
  5.     $condition1 = 0;
  7.     $value = $test
  8.         ->if($condition1)
  9.         ->condition1()
  10.         ->else()
  11.         ->condition2()
  12.         ->fi()
  13.         ->value();
  15.     $this->assertSame('condition2', $value);
  16. }

else 条件语句例子

测试例子

  1. # Tests\Flow\FlowControlTest::getElseData
  2. public function getElseData()
  3. {
  4.     return [
  5.         [0, 'condition1 condition5'],
  6.         [1, 'condition2 condition5'],
  7.         [2, 'condition3 condition5'],
  8.         [3, 'condition4'], // else 仅能根据上一次的 elif 或 if 来做判断，这里为 elif(3 === $condition)
  9.         [4, 'condition5'],
  10.         [5, 'condition5'],
  11.         [6, 'condition5'],
  12.     ];
  13. }
  1. public function testElseMulti(int $condition, string $result): void
  2. {
  3.     $test = new Test1();
  5.     $value = $test
  6.         ->if(0 === $condition)
  7.         ->condition1()
  8.         ->elif(1 === $condition)
  9.         ->condition2()
  10.         ->elif(2 === $condition)
  11.         ->condition3()
  12.         ->elif(3 === $condition)
  13.         ->condition4()
  14.         ->else() // else 仅能根据上一次的 elif 或 if 来做判断，这里为 elif(3 === $condition)
  15.         ->condition5()
  16.         ->fi()
  17.         ->value();
  19.     $this->assertSame($result, $value);
  20. }

elif 条件语句

  1. public function testElseIfs(): void
  2. {
  3.     $test = new Test1();
  5.     $condition1 = 1;
  7.     $value = $test
  8.         ->if(0 === $condition1)
  9.         ->condition1()
  10.         ->elif(1 === $condition1)
  11.         ->condition2()
  12.         ->fi()
  13.         ->value();
  15.     $this->assertSame('condition2', $value);
  16. }