mock 例子

mock:

1. for system.
TEST(CCareaTest, CCareaTest_system_failed)
{
    int rc= 0;
    char execute_file[80];
   mock().expectOneCall("system").andReturnValue(-1);

    memset(execute_file, '\0', 80);
    rc= execute_sys(execute_file);---in there, invoke system which is using mock defination for the interface in .cpp.
    CHECK(rc == -1);
}

As system is in stdlib.h, only have the statement for this interface.

2. for conf_create_r.
TEST(Logcreate, Logcreatet_init_success)
{
 
 mock().expectOneCall("conf_create_r").andReturnValue(0);
 log_create_init();
 mock().checkExpectations();
}

in log_create_init, it invokes conf_create_r,
conf_create_r is defined mock acutal call procedure in xx.cpp. and it doesn't have statement for this.

tst/ut/mock/util.cpp:

int conf_create_r(char   *name)
{
    MockFunctionCall &thisCall = mock().actualCall("conf_create_r");

    if (thisCall.hasReturnValue())
    {
     return thisCall.returnValue().getIntValue();
    }
   
    return 0;
}

So might it is a library funciton. through link to the production code.
Thus, this is example for library mocking.

 

extra example:

    #include "CppUTestExt/MockSupport_c.h"

    mock_c()->expectOneCall("foo")->withIntParamaters("integer", 10)->andReturnDoubleValue(1.11);
    mock_c()->actualCall("foo")->withIntParamaters("integer", 10)->returnValue().value.doubleValue;