test.cpp
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/**
* Test suite for Redox using GTest.
*/
#include <iostream>
#include "../src/redox.hpp"
#include "gtest/gtest.h"
namespace {
using namespace redox;
using namespace std;
// ------------------------------------------
// The fixture for testing class Redox.
// ------------------------------------------
class RedoxTest : public ::testing::Test {
protected:
Redox rdx = {"localhost", 6379};
RedoxTest() {
rdx.start();
}
virtual ~RedoxTest() {
rdx.block();
}
// CV and counter to wait for async commands to complete
atomic_int cmd_count = {0};
condition_variable cmd_waiter;
mutex cmd_waiter_lock;
// To make the callback code nicer
template <class ReplyT>
using Callback = std::function<void(const std::string&, const ReplyT&)>;
/**
* Helper function that returns a command callback to print out the
* command/reply and to test the reply against the provided value.
*/
template<class ReplyT>
Callback<ReplyT> check(const ReplyT& value) {
cmd_count++;
return [this, value](const string& cmd, const ReplyT& reply) {
EXPECT_EQ(reply, value);
cmd_count--;
cmd_waiter.notify_all();
};
}
/**
* Wrapper for the callback that also prints out the command.
*/
template<class ReplyT>
Callback<ReplyT> print(Callback<ReplyT> callback) {
return [callback](const string& cmd, const ReplyT& reply) {
cout << cmd << ": " << reply << endl;
callback(cmd, reply);
};
}
/**
* Combination of print and check for simplicity.
*/
template<class ReplyT>
Callback<ReplyT> print_and_check(const ReplyT& value) {
return print(check<ReplyT>(value));
}
/**
* Wait until all async commands that used check() as a callback
* complete.
*/
void wait_and_stop() {
unique_lock<mutex> ul(cmd_waiter_lock);
cmd_waiter.wait(ul, [this] { return (cmd_count == 0); });
rdx.stop_signal();
};
};
// -------------------------------------------
// Unit tests - asynchronous
// -------------------------------------------
TEST_F(RedoxTest, GetSet) {
rdx.command<string>("SET redox_test:a apple", print_and_check<string>("OK"));
rdx.command<string>("GET redox_test:a", print_and_check<string>("apple"));
wait_and_stop();
}
TEST_F(RedoxTest, Delete) {
rdx.command<string>("SET redox_test:b banana", print_and_check<string>("OK"));
rdx.command<int>("DEL redox_test:b", print_and_check(1));
rdx.command<nullptr_t>("GET redox_test:b", check(nullptr));
wait_and_stop();
}
// -------------------------------------------
// End tests
// -------------------------------------------
} // namespace
int main(int argc, char **argv) {
::testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}