Googleモック！テストでエラーが発生しました。通話はデフォルトで呼び出されます。

Question

私はGoogleテストとGoogleモックでテストを書いています。私はコードをテスト可能にするためにリファクタリングしました。私はメインからこのコードにClientオブジェクトを渡しています。このようにして、クライアントオブジェクトは、メインが実行されているときは本当のものになり、テストが実行されているときは偽のものになることがあります。私は、Connectionクラスがクライアントオブジェクトをどのように使用するかをテストしようとしています。私はエラーが発生しています。前もって感謝します！ myClient.hppの

40e2a3063be74cc42703dfa1fc09ec37c198d530

#include "gtest/gtest.h" 
#include "gmock/gmock.h" 
#include "myClient.hpp" 
#include "myConcreteConnection.hpp" 

using ::testing::A; 
using ::testing::AtLeast; 
using ::testing::Invoke; 
using ::testing::InvokeWithoutArgs; 
using ::testing::Matcher; 
using ::testing::Return; 
using ::testing::StrEq; 
using ::testing::_; 

class MockMyClient: public MyClient { 
public: 
    MOCK_METHOD2(connect, int(uint16_t port, const char *host)); 
    MOCK_METHOD1(print, size_t(const char[])); 
    MOCK_METHOD0(connected, uint8_t()); 
    MOCK_METHOD0(read, int()); 
    MOCK_METHOD0(stop, void()); 
}; 

TEST(downloadData, basic) { 
    int port = 80; 
    const char *host = "api.coindesk.com"; 
    const char *path = "v1/bpi/currentprice.json"; 
    MockMyClient client; // connection happens through client 
    MyConcreteConnection connection(&client, host, path); // connection prints text to client and reads from client 
    std::string str = makeGetRequest(host, path); // the text that connection will print to client 
    std::string json = "one two three {four five six}"; 
    EXPECT_CALL(client, print(Matcher<const char*>(StrEq(str.c_str())))).Times(1); // the client's print should be called with str 
    ON_CALL(client, read()).WillByDefault(Return(InvokeWithoutArgs([&json]()->int { // when the connection calls the clients read, it should 
     static auto it = json.begin(); 
     return (int)(*(it++)); // return the text in json 
    }))); 
    std::string data = connection.read(); 
} 

TEST(sanity, one) { 
    ASSERT_EQ(1,1); 
} 

コンテンツmyConcreteConnection.hpp

の

#ifndef PROJECT_WIFICLIENTADAPTER_HPP 
#define PROJECT_WIFICLIENTADAPTER_HPP 

#include <cstddef> 
#include <cstdint> 

class MyClient { 
public: 
    virtual int connect(uint16_t port, const char *host) =0; 
    virtual size_t print(const char[]) =0; 
    virtual uint8_t connected() =0; 
    virtual int read() =0; 
    virtual void stop() =0; 
}; 

#endif //PROJECT_WIFICLIENTADAPTER_HPP 

コンテンツでmyConcreteConnectionTest.cppの

https://github.com/rgkirch/Hacker-HUD/blob/doesnt_work/test/myConcreteConnectionTest.cpp

内容

#ifndef MYCONNECTION_HPP 
#define MYCONNECTION_HPP 

#include <string> 
      #include "myConnection.hpp" 
      #include "myClient.hpp" 
      #include "makeGetRequest.hpp" 
      #include "globals.hpp" 

class MyConcreteConnection : MyConnection { 
public: 
    MyConcreteConnection(MyConcreteConnection& connection) : client(connection.client), port(connection.port), host(connection.host), path(connection.path) {}; 
    MyConcreteConnection(MyClient* c, const char *h, const char *p) : client(c), host(h), path(p) { 
     client->print(makeGetRequest(host.c_str(), path.c_str()).c_str()); 
    }; 
    ~MyConcreteConnection() { 
     client->stop(); 
    }; 
    size_t print(const char *cs) override { return client->print(cs); }; 
    std::string read() override { 
     std::string data; 
     for(int read = 0; (read = client->read()) > -1; data.push_back(static_cast<char>(read))); 
     auto i = data.find('{'); 
     if (i == data.npos) { 
      i = 0; 
     } 
     return data.substr(i); 
    }; 
private: 
    MyClient *client; 
    uint16_t port; 
    std::string host; 
    std::string path; 
}; 

#endif //MYCONNECTION_HPP 

エラーメッセージ

/home/richie/Downloads/JetBrains/clion-2017.1.2/bin/cmake/bin/cmake --build /home/richie/Documents/rgkirch/Hacker-HUD/cmake-build-debug --target hhTest -- -j 4 
-- Configuring done 
-- Generating done 
-- Build files have been written to: /home/richie/Documents/rgkirch/Hacker-HUD/cmake-build-debug 
Scanning dependencies of target gtest 
Scanning dependencies of target gmock 
[ 8%] Building CXX object test/googletest/googlemock/gtest/CMakeFiles/gtest.dir/src/gtest-all.cc.o 
[ 16%] Building CXX object test/googletest/googlemock/CMakeFiles/gmock.dir/__/googletest/src/gtest-all.cc.o 
[ 25%] Building CXX object test/googletest/googlemock/CMakeFiles/gmock.dir/src/gmock-all.cc.o 
[ 33%] Linking CXX static library libgmock.a 
[ 41%] Linking CXX static library libgtest.a 
/usr/bin/ar qc libgtest.a CMakeFiles/gtest.dir/src/gtest-all.cc.o 
/usr/bin/ar qc libgmock.a CMakeFiles/gmock.dir/__/googletest/src/gtest-all.cc.o CMakeFiles/gmock.dir/src/gmock-all.cc.o 
/usr/bin/ranlib libgtest.a 
/usr/bin/ranlib libgmock.a 
[ 41%] Built target gmock 
[ 41%] Built target gtest 
Scanning dependencies of target gtest_main 
[ 50%] Building CXX object test/googletest/googlemock/gtest/CMakeFiles/gtest_main.dir/src/gtest_main.cc.o 
[ 58%] Linking CXX static library libgtest_main.a 
/usr/bin/ar qc libgtest_main.a CMakeFiles/gtest_main.dir/src/gtest_main.cc.o 
/usr/bin/ranlib libgtest_main.a 
[ 58%] Built target gtest_main 
Scanning dependencies of target hhTest 
[ 66%] Building CXX object test/CMakeFiles/hhTest.dir/makeGetRequestTest.cpp.o 
[ 75%] Building CXX object test/CMakeFiles/hhTest.dir/myConcreteConnectionTest.cpp.o 
[ 83%] Building CXX object test/CMakeFiles/hhTest.dir/displayTest.cpp.o 
[ 91%] Building CXX object test/CMakeFiles/hhTest.dir/__/pio/src/makeGetRequest.cpp.o 
In file included from /home/richie/Documents/rgkirch/Hacker-HUD/test/googletest/googlemock/include/gmock/gmock.h:58:0, 
       from /home/richie/Documents/rgkirch/Hacker-HUD/test/myConcreteConnectionTest.cpp:2: 
/home/richie/Documents/rgkirch/Hacker-HUD/test/googletest/googlemock/include/gmock/gmock-actions.h: In instantiation of ‘testing::internal::ReturnAction<R>::Impl<R_, F>::Impl(const testing::internal::linked_ptr<T>&) [with R_ = testing::PolymorphicAction<testing::internal::InvokeWithoutArgsAction<downloadData_basic_Test::TestBody()::<lambda()> > >; F = int(); R = testing::PolymorphicAction<testing::internal::InvokeWithoutArgsAction<downloadData_basic_Test::TestBody()::<lambda()> > >]’: 
/home/richie/Documents/rgkirch/Hacker-HUD/test/googletest/googlemock/include/gmock/gmock-actions.h:557:44: required from ‘testing::internal::ReturnAction<R>::operator testing::Action<Func>() const [with F = int(); R = testing::PolymorphicAction<testing::internal::InvokeWithoutArgsAction<downloadData_basic_Test::TestBody()::<lambda()> > >]’ 
/home/richie/Documents/rgkirch/Hacker-HUD/test/myConcreteConnectionTest.cpp:38:8: required from here 
/home/richie/Documents/rgkirch/Hacker-HUD/test/googletest/googlemock/include/gmock/gmock-actions.h:577:39: error: no matching function for call to ‘ImplicitCast_(testing::PolymorphicAction<testing::internal::InvokeWithoutArgsAction<downloadData_basic_Test::TestBody()::<lambda()> > >&)’ 
      value_(ImplicitCast_<Result>(value_before_cast_)) {} 
            ^
In file included from /home/richie/Documents/rgkirch/Hacker-HUD/test/googletest/googletest/include/gtest/internal/gtest-internal.h:40:0, 
       from /home/richie/Documents/rgkirch/Hacker-HUD/test/googletest/googletest/include/gtest/gtest.h:58, 
       from /home/richie/Documents/rgkirch/Hacker-HUD/test/myConcreteConnectionTest.cpp:1: 
/home/richie/Documents/rgkirch/Hacker-HUD/test/googletest/googletest/include/gtest/internal/gtest-port.h:1377:11: note: candidate: template<class To> To testing::internal::ImplicitCast_(To) 
inline To ImplicitCast_(To x) { return x; } 
     ^
/home/richie/Documents/rgkirch/Hacker-HUD/test/googletest/googletest/include/gtest/internal/gtest-port.h:1377:11: note: template argument deduction/substitution failed: 
In file included from /home/richie/Documents/rgkirch/Hacker-HUD/test/googletest/googlemock/include/gmock/gmock.h:58:0, 
       from /home/richie/Documents/rgkirch/Hacker-HUD/test/myConcreteConnectionTest.cpp:2: 
/home/richie/Documents/rgkirch/Hacker-HUD/test/googletest/googlemock/include/gmock/gmock-actions.h:577:39: note: cannot convert ‘((testing::internal::ReturnAction<testing::PolymorphicAction<testing::internal::InvokeWithoutArgsAction<downloadData_basic_Test::TestBody()::<lambda()> > > >::Impl<testing::PolymorphicAction<testing::internal::InvokeWithoutArgsAction<downloadData_basic_Test::TestBody()::<lambda()> > >, int()>*)this)->testing::internal::ReturnAction<testing::PolymorphicAction<testing::internal::InvokeWithoutArgsAction<downloadData_basic_Test::TestBody()::<lambda()> > > >::Impl<testing::PolymorphicAction<testing::internal::InvokeWithoutArgsAction<downloadData_basic_Test::TestBody()::<lambda()> > >, int()>::value_before_cast_’ (type ‘testing::PolymorphicAction<testing::internal::InvokeWithoutArgsAction<downloadData_basic_Test::TestBody()::<lambda()> > >’) to type ‘int’ 
      value_(ImplicitCast_<Result>(value_before_cast_)) {} 
            ^
test/CMakeFiles/hhTest.dir/build.make:137: recipe for target 'test/CMakeFiles/hhTest.dir/myConcreteConnectionTest.cpp.o' failed 
make[3]: *** [test/CMakeFiles/hhTest.dir/myConcreteConnectionTest.cpp.o] Error 1 
make[3]: *** Waiting for unfinished jobs.... 
CMakeFiles/Makefile2:456: recipe for target 'test/CMakeFiles/hhTest.dir/all' failed 
make[2]: *** [test/CMakeFiles/hhTest.dir/all] Error 2 
CMakeFiles/Makefile2:468: recipe for target 'test/CMakeFiles/hhTest.dir/rule' failed 
make[1]: *** [test/CMakeFiles/hhTest.dir/rule] Error 2 
Makefile:279: recipe for target 'hhTest' failed 
make: *** [hhTest] Error 2 

Answer 1

私はReturn()を削除した後、それは構築します。 今では "-j4" 削除し、ビルドをやり直すことで、これをクリーンアップしてください

ON_CALL(client, read()).WillByDefault(InvokeWithoutArgs([&json]()->int { // when the connection calls the clients read, it should 
static auto it = json.begin(); 
return (int)(*(it++)); // return the text in json 
})); 

https://github.com/google/googletest/blob/master/googlemock/docs/CheatSheet.md