GitHub - cpp-testing/gmock.py: 'Google Mock' mocks generator based on libclang

Google Mock mocks generator based on libclang

Requirements

python (tested with 2.7 and 3.3)
libclang (tested with 3.2 and 3.3)

Download

git clone --recursive git@github.com:krzysztof-jusiak/gmock.git

Usage

Usage: gmock.py [options] files...

Options:
  -h, --help                show this help message and exit
  -c FILE, --config=FILE    config FILE (default='gmock.conf')
  -d DIR, --dir=DIR         dir for generated mocks (default='.')
  -l LIMIT, --limit=LIMIT   limit to interfaces within declaration (default='')

Example

will create mocks files in current directory for all interfaces

./gmock.py -c "gmock.conf" -d "test/mocks" -l "namespace::class" file1.hpp file2.hpp

will create directory 'test/mocks' and mocks files within this directory for all interfaces (contains at least one pure virtual function) which will be within 'namespace::class' declaration

./gmock.py -d "test/mocks" file1.hpp file2.hpp -- -D PROJECT -Iproject/include

'--' separates arguments between script and compiler

Integration with the build system

find project -iname "*.h" -or -iname "*.hpp" | xargs "project/externals/gmock.py"   \
    -c "project/conf/gmock.conf"                                                    \
    -d "project/test/mocks"                                                         \
    -l "Project"                                                                    \
    --                                                                              \
    -D PROJECT                                                                      \
    -Iproject/include                                                               \

Features

it's reliable (based on clang compiler)
it's fast (tested on project ~200 kloc -> generation of mocs takes 3-5s on common laptop)
output file might be easily adopted to the project via configuration file
easy integration with the project build system -> generate mocks files for each interface from given files limited to the project (for example via project namespace)
able to generate cpp files with default constructors (to speed up compilation times)
generate pretty output (one mock per file)
mocking class templates
easy to extend (~300 lines of code)
handle c++ operators

    virtual int operator()(int, double) = 0;

    virtual int operator()(int arg0, double arg1) { return call_operator(arg0, arg1); }
    MOCK_METHOD2(call_operator, int(int, double));

Configuration file

#possible variables:
# file: interface file name
# dir: interface directory
# guard: header guard
# template: template parameters
# template_interface: template interface class
# interface: interface class
# mock_methods: generated gmock methods
# generated_dir: generated directory
# mock_file_hpp: mock header file
# mock_file_cpp: mock source file

mock_file_hpp = "%(interface)sMock.hpp"

file_template_hpp = """\
/*
 * file generated by gmock: %(mock_file_hpp)s
 */
#ifndef %(guard)s
#define %(guard)s

#include <gmock/gmock.h>
#include "%(dir)s/%(file)s"

%(namespaces_begin)s

%(template)sclass %(interface)sMock : public %(template_interface)s
{
public:
%(mock_methods)s
};

%(namespaces_end)s

#endif // %(guard)s

"""

mock_file_cpp = ""
file_template_cpp = ""

Example of generated output

/*
 * file generated by gmock: I2Mock.hpp
 */
#ifndef I2MOCK_HPP
#define I2MOCK_HPP

#include <gmock/gmock.h>
#include "I2.hpp"

namespace n {

class I2Mock : public I2
{
public:
    MOCK_CONST_METHOD0(f0, void());
    MOCK_METHOD1(f1, void(int));
    MOCK_METHOD1(f2, void(double));
    MOCK_METHOD2(f3, void(int, double));
    MOCK_METHOD3(f4, void(int, double, const std::string &));
    MOCK_METHOD1(f5, int(const std::string &));
    MOCK_CONST_METHOD1(f6, boost::shared_ptr<int>(const boost::shared_ptr<int> &));
    MOCK_CONST_METHOD0(f7, const int&());
    MOCK_METHOD0(f8, boost::function<void(int)>());
    MOCK_CONST_METHOD1(f9, boost::non_type<int,0>(const boost::non_type<int, 1> &));
    MOCK_METHOD0(f10, const int*const ());
    MOCK_METHOD0(f11, const void());
    virtual int operator()() { return function_call_or_cast_operator(); }
    MOCK_METHOD0(function_call_or_cast_operator, int());
};

} // namespace n

#endif // I2MOCK_HPP

/*
 * file generated by gmock: TMock.hpp
 */
#ifndef TMOCK_HPP
#define TMOCK_HPP

#include <gmock/gmock.h>
#include "T.hpp"

namespace n {

template<typename Elem>
class TMock : public T<Elem>
{
public:
    MOCK_CONST_METHOD0_T(GetSize, int());
    MOCK_METHOD1_T(Push, void(const Elem &));
};

} // namespace n

#endif // TMOCK_HPP

License

Distributed under the Boost Software License, Version 1.0.