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社区首页 >问答首页 >如何解决gmock EXPECT_CALL故障,当变量传递给函数时,这并不重要

如何解决gmock EXPECT_CALL故障,当变量传递给函数时,这并不重要
EN

Stack Overflow用户
提问于 2015-11-17 11:38:13
回答 2查看 2.9K关注 0票数 1

我让EXPECT_CALL通过了我的测试,直到我添加了一个标题来包装我正在测试的unsigned char *。我知道测试正在下降,因为它与预期的unsigned char *不同。我只是不知道如何重新设计我的测试,所以分配给unsigned char *的测试会通过。

我的测试(忽略了变量的初始化):

代码语言:javascript
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EXPECT_CALL(networkConnectionMock, Transmit(packetData, dataSize));

packetManager.Update(0.01f);
packetManager.Send(packetData, dataSize);

所测试的功能:

代码语言:javascript
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void PacketManager::Send(unsigned char *packetData, int packetSize)
{
    if(this->secondSinceLastUpdate <= 1.0f)
        packetsSent++;
    else
    {
        packetsSent = 0;
        this->secondSinceLastUpdate = 0.0f;
    }

    std::stringstream convert;
    convert << htonl((uint32_t)packetSize);
    Header *header = new Header;
    header->name = "PKT_" + convert.str();
    header->packetSize = packetSize;
    header->packetData = packetData;
    unsigned char * pktHeader = new unsigned char[sizeof(Header)];
    pktHeader = (unsigned char*)header;
    PKT_Header = pktHeader; // tried assigning to public variable, 
                           // but would be assigned to after EXPECT_CALL is setup.
    int totalPacketSize = packetSize; // rewrite to loop through que
    if(header->packetSize <= 800 && totalPacketSize <= 1024 && packetsSent <= 30)
        networkConnection->Transmit(pktHeader, packetSize);
}

gmock输出:

代码语言:javascript
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[==========] Running 1 test from 1 test case.
[----------] Global test environment set-up.
[----------] 1 test from PacketManager
[ RUN      ] PacketManager.SendsPacketsUnder1024
unknown file: Failure

Unexpected mock function call - returning directly.
    Function call: Transmit(0x2096c10, 100)
Google Mock tried the following 1 expectation, but it didn't match:

/home/zerophase/ClionProjects/PacketManager/tests/basic_tests/basic_check.cpp:20: EXPECT_CALL(networkConnectionMock, Transmit(packetData, dataSize))...
  Expected arg #0: is equal to 0x2096560
           Actual: 0x2096c10
         Expected: to be called once
           Actual: never called - unsatisfied and active
/home/zerophase/ClionProjects/PacketManager/tests/basic_tests/basic_check.cpp:20: Failure
Actual function call count doesn't match EXPECT_CALL(networkConnectionMock, Transmit(packetData, dataSize))...
         Expected: to be called once
           Actual: never called - unsatisfied and active
[  FAILED  ] PacketManager.SendsPacketsUnder1024 (0 ms)
[----------] 1 test from PacketManager (0 ms total)

[----------] Global test environment tear-down
[==========] 1 test from 1 test case ran. (0 ms total)
[  PASSED  ] 0 tests.
[  FAILED  ] 1 test, listed below:
[  FAILED  ] PacketManager.SendsPacketsUnder1024

EXPECT_CALL是否仍然是我想用来测试被调用的Transmit的工具?

EN

回答 2

Stack Overflow用户

回答已采纳

发布于 2015-11-17 12:02:06

如果您并不真正关心传递给Transmit的确切参数,那么可以使用_关键字。

代码语言:javascript
运行
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EXPECT_CALL(networkConnectionMock, Transmit(_, dataSize));

如果您确实关心确切的参数,那么我会稍微重新排列我的代码,这样我就可以创建一个简单的类来完成您在unsigned char*中所做的工作,并让该类负责返回一个unsigned char*,而不是将一个原始的unsigned char*传递给Send

这样,您就可以将模拟对象传递到Send方法中,这使您能够更好地控制哪些参数被传递到Trasmit中。

票数 2
EN

Stack Overflow用户

发布于 2015-11-17 12:00:13

您正在尝试将对Transmit的调用与packetData作为第一个参数进行匹配,但是在PacketManager::Send中进行的调用是针对pktHeader的,这是一个(泄漏)局部变量。模拟正确地报告不匹配的函数调用,并且还必须报告对无趣函数调用的警告。

票数 0
EN
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接:

https://stackoverflow.com/questions/33755976

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