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// Copyright (c) 2020 Johannes Stoelp
#pragma once
#include <cstring>
#include <exception>
#include <functional>
#include <vector>
#include <iostream>
// Extremely trivial helper, just to get some tests out.
struct TestFailed : std::exception {};
// Value based ASSERT_* helper.
//
// Requirements:
// T1: comparable + printable (stream operator)
// T2: comparable + printable (stream operator)
template<typename T1, typename T2>
void ASSERT_EQ(T1 expected, T2 have) {
if (expected != have) {
std::cerr << "ASSERT_EQ failed:\n"
<< " expected: " << expected << '\n'
<< " have : " << have << '\n'
<< std::flush;
throw TestFailed{};
}
}
// Char string based ASSERT_* helper.
template<>
void ASSERT_EQ(const char* expected, const char* have) {
if (std::strcmp(expected, have) != 0) {
std::cerr << "ASSERT_EQ failed:\n"
<< " expected: " << expected << '\n'
<< " have : " << have << '\n'
<< std::flush;
throw TestFailed{};
}
}
template<>
void ASSERT_EQ(const char* expected, char* have) {
ASSERT_EQ(expected, static_cast<const char*>(have));
}
template<>
void ASSERT_EQ(char* expected, const char* have) {
ASSERT_EQ(static_cast<const char*>(expected), have);
}
template<>
void ASSERT_EQ(char* expected, char* have) {
ASSERT_EQ(static_cast<const char*>(expected), static_cast<const char*>(have));
}
// Simple test runner abstraction.
struct Runner {
void addTest(const char* name, std::function<void()> fn) { mTests.push_back(Test{name, fn}); }
int runTests() {
unsigned fail_cnt = 0;
for (auto test : mTests) {
try {
test.fn();
std::cerr << "SUCCESS " << test.name << std::endl;
} catch (TestFailed&) {
++fail_cnt;
std::cerr << "FAIL " << test.name << std::endl;
} catch (...) {
++fail_cnt;
std::cerr << "FAIL " << test.name << "(caught unspecified exception)" << std::endl;
}
}
return fail_cnt;
}
private:
struct Test {
const char* name;
std::function<void()> fn;
};
std::vector<Test> mTests{};
};
#define TEST_INIT Runner r;
#define TEST_ADD(fn) r.addTest(#fn, fn);
#define TEST_RUN r.runTests();
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