用PHPUnit测试抽象类的方法 [英] Test methods of Abstract Class with PHPUnit
问题描述
我有一个抽象类,其中包含要测试的通用方法,因此不必在扩展该类的每个类中继续对其进行测试.
I have an abstract class that has common methods in it, that I wish to test, so I do not have to keep testing them in each class that extends this class.
abstract class Class1 implements iClass1
{
const VALUE = 'A';
private $Return;
public function __construct($Field = NULL)
{
if( ! is_null($Field) )
$this->SetField($Field);
}
public function GetField()
{
return $this->Return;
}
public function SetField($Field)
{
if (strlen($Field) != 3)
throw new CLASS1_EXCEPTION('Field "' . $Field . '" must be 3 digits.');
$this->Return = $FieldCode;
}
abstract function CalculateData();
}
我想创建一个基本的测试用例,然后将对构造函数,GetField和其他函数进行测试,然后我的其他测试文件就可以对抽象函数进行测试了.
I want to create the basic test case then that will test the constructor, and the GetField and other functions, then my other test files can test the abstract functions.
我希望能够测试const没有改变,该字段引发异常等...
I want to be able to test the const has not changed, the field throws the exception etc...
测试:
class TEST_CLASS1 extends PHPUnit_Framework_TestCase
{
protected function setUp()
{
require_once('CLASS1.php');
}
public function testConstants()
{
$this->assertEquals(CLASS1, 'A');
}
/* @expectedException CLASS1_EXCEPTION
public function testLargeFieldException()
{
$class1 = new CLASS1('ABCD');
$class1 = new CLASS1();
$class1->SetField('ABCD');
}
}
由于无法创建CLASS1对象,因为它是一个抽象类,该如何创建测试?
How do I create the tests since I can not create the CLASS1 object as it is an abstract class?
推荐答案
一种选择是创建
TestableClass1 extends Class1 {
public function CalculateData() {}
}
并使用该类进行测试.
另一个选择是做几乎相同的事情,但是使用phpunit提供的API:
The other option is to do pretty much the same but use an API phpunit provides you with:
为此,请参见示例示例10.13:测试phpunit documentation
:
For this see the sample Example 10.13: Testing the concrete methods of an abstract class of the phpunit documentation
:
abstract class AbstractClass
{
public function concreteMethod()
{
return 5;
}
public abstract function abstractMethod();
}
class AbstractClassTest extends PHPUnit_Framework_TestCase
{
public function testConcreteMethod()
{
$sut = $this->getMockForAbstractClass('AbstractClass');
$this->assertSame(5, $sut->concreteMethod());
}
}
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