如何在google mock测试中将一个值设置为一个mock方法的void *参数? [英] How to set a value to void * argument of a mock method in google mock testing?
问题描述
我想将字符串Device Name传递给方法的 void *
指针参数,并稍后将其检索到字符数组。
这里我创建了一个动作来实现这一点。
ACTION_P(SetArg2ToChar,value){* static_cast< char *>(arg2)= * value; }
被调用/模拟的实际方法
bool getDictItem(WORD wIndex,BYTE bSubIndex,void * pObjData,DWORD dwLength,CSdo& sdo)
我的mock方法
MOCK_METHOD5(getDictItem,
bool(WORD wIndex, BYTE bSubIndex,void * pObjData,DWORD dwLength,CSdo& sdo));
在代码中调用
if(!can.getDictItem(wIndex,bSubIndex,pObjData,dwLength,tSdo))
b $ b
我想向这个 pObjData
(列表中的第三个参数)传递一个字符串。
在我的google测试中,我这样做。
char szDeviceName [30] = {0}
snprintf(szDeviceName,sizeof(szDeviceName),%s,Device Name);
EXPECT_CALL(mockCan,getDictItem(_,_,_,_,_))
.WillOnce(DoAll(SetArg2ToChar(szDeviceName),
Return(true)))
.RetiresOnSaturation();
/ *调用一个真正的方法来调用这个mock方法* /
如果我尝试直接使用SetArgPointee <2>设置此参数(pObjData),我得到以下错误。
strong> 错误:'void '不是指向对象类型的指针*
因此,我尝试使用 ACTION_P
现在有了这个实现,我只得到 szDeviceName
变量(到这个 pObjData
),即,D,后面是在这个mock对象后的实际代码流中的29 0叫做。
我想获得设置为 void *
的完整字符串名称。
我指的是这个问题,并且能够取得进展。但我不能传递完整的字符串。 如何设置,在google mock中,一组值的void *参数?
有关这方面的任何信息都是有帮助的。
<
ACTION_P
方法基本上是正常的。但是当你处理一个C字符串时,你不能使用赋值操作(只是复制第一个字符),而应该使用一个字符串复制函数,如 ACTION_P(SetArg2ToCharWithSizeArg3,value){ strcpy_s(static_cast< char *>(arg2),arg3,value); }
(我无法抗拒轻微重命名操作)。 I want to pass a string "Device Name" to a void *
pointer argument of a method and retrieve it to a character array later.
For this I've done as shown below.
Here I have created an action to achieve this.
ACTION_P(SetArg2ToChar, value) {*static_cast<char*>(arg2) = *value; }
Actual method to be called/mocked
bool getDictItem(WORD wIndex, BYTE bSubIndex, void * pObjData, DWORD dwLength, CSdo& sdo)
My mock method
MOCK_METHOD5(getDictItem,
bool(WORD wIndex, BYTE bSubIndex, void * pObjData, DWORD dwLength, CSdo& sdo));
in code it is called as
if( !can.getDictItem(wIndex, bSubIndex, pObjData, dwLength, tSdo) )
I want to pass a string to this pObjData
(3rd argument in the list).
In my google tests, I'm doing like this.
char szDeviceName[30]= {0};
snprintf(szDeviceName, sizeof(szDeviceName), "%s", "Device Name" );
EXPECT_CALL( mockCan, getDictItem(_,_,_,_,_) )
.WillOnce(DoAll(SetArg2ToChar(szDeviceName),
Return(true)))
.RetiresOnSaturation();
/* Call a real method within which this mock method is called */
If I try to set this argument(pObjData) using "SetArgPointee<2>" directly, I get the below error.
error: 'void' is not a pointer-to-object type*
Hence I'm trying with ACTION_P
Now with this implementation, I only get the first letter of the szDeviceName
variable (into this pObjData
) i.e., "D" followed by 29 0's in the real code flow after this mock object is called.
I want to get the full string name set into this void *
arguement.
I refered to this below question and was able progress this far. But I'm not able to pass the full string. How to set, in google mock, a void* argument to a set of values?
Any information regarding this will be helpful.
The ACTION_P
approach is basically OK. But as you are dealing with a C string, you can't just use the assignment operation (which just copies the first character) but instead you should use a string copy function like ACTION_P(SetArg2ToCharWithSizeArg3, value) { strcpy_s(static_cast<char*>(arg2), arg3, value); }
(I couldn't resist to slightly rename the action).
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