Junit的擴展測試用例來測試孩子

Question

我有類和測試用例FormTest其測試Form

public class Form { 
    public doSomething() {} 
} 

public class GreenForm extends Form { 
    @Override 
    public doSomething() {} 
} 

public class YellowForm extends Form { 
} 

public class FormTest { 
    Form form = new Form(); 

    @Test 
    public void doSomethingTest() { getForm().doSomething() } 

    public Form getForm() { return form; } 
} 

正在擴大FormTest是propper方式來測試GreenForm和覆蓋方法？例如：

public class GreenFormTest extends FormTest { 
    Form form = new GreenForm(); 

    @Override 
    public Form getForm() { return form; } 
} 

Answer 1

我同意你如何測試這個概念，並定期做這個。我遵循的模式是這樣的：

public class FormTest{ 
    private Form form; 

    @Before 
    public void setup(){ 
     // any other needed setup 
     form = getForm(); 
     // any other needed setup 
    } 

    protected Form getForm(){ 
     return new Form(); 
    } 

    @Test 
    // do tests of Form class 
} 

public class GreenTest{ 
    private GreenForm form; 

    @Before 
    public void setup(){ 
     form = getForm(); 
     // any other needed setup 
     super.setup(); 
     // any other needed setup 
    } 

    @Override 
    protected Form getForm(){ 
     return new GreenForm(); 
    } 

    @Test 
    // do tests of how GreenForm is different from Form 
    // you might also need to override specific tests if behavior of the method 
    // under test is different 
} 

Answer 2

可以使用的TestCase的setUp（）方法爲。

public class Form 
{ 
    public void doSomething(){} 
} 

public class GreenForm extends Form 
{ 
    @Override 
    public void doSomething(){} 
} 

隨着測試：

public class FormTest extends TestCase 
{ 
    protected Form f; 

    @Before 
    public void setUp() 
    { 
     f = new Form(); 
    } 

    @Test 
    public void testForm() 
    { 
     // do something with f 
    } 
} 

public class GreenFormTest extends FormTest 
{ 
    @Before 
    @Override 
    public void setUp() 
    { 
     f = new GreenForm(); 
    } 
}