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test_runner.h
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test_runner.h
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#pragma once
#include <iostream>
#include <map>
#include <set>
#include <sstream>
#include <stdexcept>
#include <string>
#include <unordered_map>
#include <vector>
namespace TestRunnerPrivate {
template <typename K, typename V, template <typename, typename> class Map>
std::ostream& PrintMap(std::ostream& os, const Map<K, V>& m) {
os << "{";
bool first = true;
for (const auto& kv : m) {
if (!first) {
os << ", ";
}
first = false;
os << kv.first << ": " << kv.second;
}
return os << "}";
}
}
template <class T>
std::ostream& operator<<(std::ostream& os, const std::vector<T>& s) {
os << "{";
bool first = true;
for (const auto& x : s) {
if (!first) {
os << ", ";
}
first = false;
os << x;
}
return os << "}";
}
template <class T>
std::ostream& operator<<(std::ostream& os, const std::set<T>& s) {
os << "{";
bool first = true;
for (const auto& x : s) {
if (!first) {
os << ", ";
}
first = false;
os << x;
}
return os << "}";
}
template <class K, class V>
std::ostream& operator<<(std::ostream& os, const std::map<K, V>& m) {
return TestRunnerPrivate::PrintMap(os, m);
}
template <class K, class V>
std::ostream& operator<<(std::ostream& os, const std::unordered_map<K, V>& m) {
return TestRunnerPrivate::PrintMap(os, m);
}
template <class T, class U>
void AssertEqual(const T& t, const U& u, const std::string& hint = {}) {
if (!(t == u)) {
std::ostringstream os;
os << "Assertion failed: " << t << " != " << u;
if (!hint.empty()) {
os << " hint: " << hint;
}
throw std::runtime_error(os.str());
}
}
inline void Assert(bool b, const std::string& hint) {
AssertEqual(b, true, hint);
}
class TestRunner {
public:
template <class TestFunc>
void RunTest(TestFunc func, const std::string& test_name) {
try {
func();
std::cerr << test_name << " OK" << std::endl;
} catch (std::exception& e) {
++fail_count;
std::cerr << test_name << " fail: " << e.what() << std::endl;
} catch (...) {
++fail_count;
std::cerr << "Unknown exception caught" << std::endl;
}
}
~TestRunner() {
std::cerr.flush();
if (fail_count > 0) {
std::cerr << fail_count << " unit tests failed. Terminate" << std::endl;
exit(1);
}
}
private:
int fail_count = 0;
};
#ifndef FILE_NAME
#define FILE_NAME __FILE__
#endif
#define ASSERT_EQUAL(x, y) \
{ \
std::ostringstream __assert_equal_private_os; \
__assert_equal_private_os << #x << " != " << #y << ", " << FILE_NAME \
<< ":" << __LINE__; \
AssertEqual(x, y, __assert_equal_private_os.str()); \
}
#define ASSERT(x) \
{ \
std::ostringstream __assert_private_os; \
__assert_private_os << #x << " is false, " << FILE_NAME << ":" \
<< __LINE__; \
Assert(x, __assert_private_os.str()); \
}
#define RUN_TEST(tr, func) tr.RunTest(func, #func)