Add test.cpp to test C++ API

Makefile

@@ -1,16 +1,20 @@
 prefix = /usr/local
 bindir = $(prefix)/bin
 CFLAGS = -std=c99 -Wall -Wextra -pedantic
+CXXFLAGS = -std=c++20 -Wall -Wextra -pedantic
 
 .DEFAULT_GOAL := test
 
 
 clean:
-	rm -f test
+	rm -f test testcpp
 
 test: test.c
 	$(CC) test.c -g $(CFLAGS) -o test
 
+testcpp: test.cpp
+	$(CXX) test.cpp -g $(CXXFLAGS) -o testcpp
+
 check: test
 	./test.sh
 

test.cpp

@@ -0,0 +1,80 @@
+#include "exile.hpp"
+#include "assert.h"
+#include <map>
+
+std::string sandboxed_reverse(std::string str)
+{
+	std::reverse(str.begin(), str.end());
+	return str;
+}
+
+std::string deserialize_stdstring(const char *buf, size_t n)
+{
+	return std::string { buf, n };
+}
+
+size_t serialize_stdstring(const std::string &t, char *buf, size_t n)
+{
+	if(n < t.size())
+	{
+		return 0;
+	}
+	memcpy(buf, t.data(), t.size());
+	return t.size();
+}
+
+size_t stdstrlen(const std::string &str)
+{
+	return str.size();
+}
+
+int incrementer(int arg)
+{
+	return ++arg;
+}
+int test_exile_launch_trivial()
+{
+	int u = 22;
+	int result = exile_launch_trivial<int>(exile_init_policy(), &incrementer, u);
+	assert(result == 23);
+	return 0;
+}
+
+int test_exile_launch()
+{
+	std::string str = "abc123";
+	std::string reversed = exile_launch<std::string>(exile_init_policy(), &serialize_stdstring, &deserialize_stdstring, &sandboxed_reverse, str);
+
+	assert(reversed == "321cba");
+	return 0;
+}
+
+int main(int argc, char *argv[])
+{
+	if(argc < 2)
+	{
+		std::cerr << "Missing test" << std::endl;
+		return 1;
+	}
+	std::map<std::string, int (*)()> map = {
+		{ "launch-trivial-cpp", &test_exile_launch_trivial} ,
+		{ "launch-cpp", &test_exile_launch }
+	};
+
+	std::string test = argv[1];
+	if(test == "--dumptests")
+	{
+		for(auto &entry : map)
+		{
+			std::cout << entry.first << std::endl;
+		}
+		return 0;
+	}
+	int (*fn)() = map[test];
+	if(fn != nullptr)
+	{
+		return fn();
+	}
+	std::cerr << "Unknown test" << std::endl;
+	return 1;
+}