glibcmock是使用Google Test模拟 libc 函数的解决方案。例如:
#include "got_hook.h"
#include "gmock/gmock.h"
#include "gtest/gtest.h"
#include <sys/socket.h>
#include <mutex>
#include <memory>
struct MockBind {
MOCK_METHOD3(Bind, int(int, const struct sockaddr*, socklen_t));
};
static MockBind *g_mock{nullptr};
static int Bind(int sockfd, const struct sockaddr *addr, socklen_t addrlen) {
return g_mock->Bind(sockfd, addr, addrlen);
}
static std::mutex g_test_mutex;
TEST(BindTest, MockSample) {
std::lock_guard<std::mutex> lock(g_test_mutex);
std::unique_ptr<MockBind> mock(g_mock = new MockBind());
testing::GotHook got_hook;
ASSERT_NO_FATAL_FAILURE(got_hook.MockFunction("bind", (void*)&Bind));
// ... do your test here, for example:
struct sockaddr* addr = nullptr;
EXPECT_CALL(*g_mock, Bind(1, addr, 20)).WillOnce(testing::Return(0));
EXPECT_EQ(0, bind(1, addr, 20));
}