我目前正在进行单元测试,我正在尝试创建一个测试以测试单个功能的不同情况的测试。例如,我具有以下功能:
public static String foo(Object arg0, Object arg1) {
String returnValue = null;
if(arg0.getName() != null && arg0.getId() != null) {
returnValue = "Value 1";
} else if (arg1.getName() != null && arg1.getId() != null ) {
returnValue = "Value 2";
}
return returnValue;
}
我要测试以下情况:
arg0.getName() == null
和arg1.getName() == null
arg0.getName() != null
和arg0.getId() != null
和arg1.getName() == null
arg0.getName() == null
和arg1.getName() != null
和arg1.getId() != null
等...
我当前的测试看起来像这样:
public void testFoo() {
/** Setting up my mocks**/
Obj arg0 = createMock(Obj.class);
Obj arg1 = createMock(Obj.class);
/** Setting my mocks behaviors **/
// Case 1
EasyMock.expect(arg0.getName()).andReturn(null);
EasyMock.expect(arg1.getName()).andReturn(null);
// Case 2
EasyMock.expect(arg0.getName()).andReturn("Jack");
EasyMock.expect(arg0.getId()).andReturn(1);
EasyMock.expect(arg1.getName()).andReturn(null);
// Case 3
EasyMock.expect(arg0.getName()).andReturn(null);
EasyMock.expect(arg1.getName()).andReturn("Paul");
EasyMock.expect(arg1.getId()).andReturn(2);
//End Cases
EasyMock.replay(arg0, arg1);
/** Testing **/
// Case 1
String expectedValue = null;
String output = foo(arg0, arg1);
assertEquals(expectedValue, output);
// Case 2
expectedValue = "Value 1";
output = foo(arg0, arg1);
assertEquals(expectedValue, output);
// Case 3
expectedValue = "Value 2";
output = foo(arg0, arg1);
assertEquals(expectedValue, output);
}
此测试的问题在于,即使我为每个测试用例设置了模拟,似乎设置也没有遵循我选择的顺序。我试图添加.once()
,atLeastOnce()
,但即使这样,它也失败了。
您对这种测试有什么解决方案吗?也许我应该为每种情况编写不同的测试?
编辑由于@swayamraina的解决方案和对代码的一些修改,我找到了一个解决方案。这不是最有效的答案,但可以做到。这是我编辑的代码:
public void testFoo() {
/** Setting my mocks behaviors **/
// Case 1
Obj arg0_case1 = createMock(Obj.class);
Obj arg1_case1 = createMock(Obj.class);
EasyMock.expect(arg0_case1.getName()).andReturn(null).anyTimes();
EasyMock.expect(arg1_case1.getName()).andReturn(null).anyTimes();
// Case 2
Obj arg0_case2 = createMock(Obj.class);
Obj arg1_case2 = createMock(Obj.class);
EasyMock.expect(arg0_case2.getName()).andReturn("Jack").anyTimes();
EasyMock.expect(arg0_case2.getId()).andReturn(1).anyTimes();
EasyMock.expect(arg1_case2.getName()).andReturn(null).anyTimes();
// Case 3
Obj arg0_case3 = createMock(Obj.class);
Obj arg1_case3 = createMock(Obj.class);
EasyMock.expect(arg0_case3.getName()).andReturn(null).anyTimes();
EasyMock.expect(arg1_case3.getName()).andReturn("Paul").anyTimes();
EasyMock.expect(arg1_case3.getId()).andReturn(2).anyTimes();
//End Cases
EasyMock.replay(arg0, arg1);
/** Testing **/
// Case 1
String expectedValue = null;
String output = foo(arg0_case1, arg1_case1);
assertEquals(expectedValue, output);
// Case 2
expectedValue = "Value 1";
output = foo(arg0_case2, arg1_case2);
assertEquals(expectedValue, output);
// Case 3
expectedValue = "Value 2";
output = foo(arg0_case3, arg1_case3);
assertEquals(expectedValue, output);
[就像@swayamraina在其答案中建议的那样,我为每个案例测试创建了不同的模拟,并在每个.anyTimes()
之后添加了一个EasyMock.expect().andReturn()
,并且效果很好。我将继续发布有关可能实施的改进的最新信息。
下面是更新的测试用例
@Test
public void test() {
A arg0, arg1;
// Case 1
arg0 = EasyMock.createMock(A.class);
arg1 = EasyMock.createMock(A.class);
// expectations
EasyMock.expect(arg0.getName()).andReturn(null).once();
EasyMock.expect(arg1.getName()).andReturn(null).once();
EasyMock.replay(arg0, arg1);
// actuals
String expectedValue = null;
String output = foo(arg0, arg1);
// assertions
Assert.assertEquals(expectedValue, output);
// Case 2
arg0 = EasyMock.createMock(A.class);
arg1 = EasyMock.createMock(A.class);
// expectations
EasyMock.expect(arg0.getName()).andReturn("Jack").once();
EasyMock.expect(arg0.getId()).andReturn(1).once();
EasyMock.expect(arg1.getName()).andReturn(null).once();
EasyMock.replay(arg0, arg1);
// actuals
expectedValue = "Value 1";
output = foo(arg0, arg1);
// assertions
Assert.assertEquals(expectedValue, output);
// Case 3
arg0 = EasyMock.createMock(A.class);
arg1 = EasyMock.createMock(A.class);
// expectations
EasyMock.expect(arg0.getName()).andReturn(null).once();
EasyMock.expect(arg1.getName()).andReturn("Paul").once();
EasyMock.expect(arg1.getId()).andReturn(2).once();
EasyMock.replay(arg0, arg1);
// actuals
expectedValue = "Value 2";
output = foo(arg0, arg1);
// assertions
Assert.assertEquals(expectedValue, output);
}
使用的测试类:
class A {
String name; public String getName() {return name;}
Integer id; public Integer getId(){return id;}
}
注意:您只能重播一次模拟。您需要为每个测试用例创建新的测试对象。在这里,我们首先创建模拟,然后设定期望并重播模拟。最后根据实际值断言。
作为一般过程,我想使用来为每个单元(实际功能)创建1个测试功能。每个描述多个测试用例。同样,每个测试用例都遵循以下模式