Minimal C++ TestSuite

testsuite.cc

#include <iostream>
#include <string>
#include <vector>

// Test suite controls test execution
class TestSuite {
public:
  // Abstract test case
  class TestCase {
  public:
    TestCase() {};
    TestCase(const char* n, const char* d)
      : name(n), description(d) {
        TestSuite::add(this);
    };  
    virtual bool test() = 0;
    std::string name;
    std::string description;
  };

  static TestSuite& get() {
    static TestSuite testSuite;
    return testSuite;
  }
  static void add(TestCase* test) {
    get().tests.push_back(test);
  }
  static bool run() {
    bool allResults = true;
    for (auto t : get().tests) {
      bool result = t->test();
      std::cout << "[TestSuite::run] " << t->description << " : " << (result ? "PASS" : "FAIL") << std::endl;
      allResults = allResults && result;
    }
    return allResults;
  }
private:
  std::vector<TestCase*> tests;
};

// TEST macro to use when defining tests
#define TEST(name, description)                         \
class TEST_##name##_Test : public TestSuite::TestCase { \
public:                                                 \
  TEST_##name##_Test(const char* n, const char* d)      \
    : TestSuite::TestCase(n, d) {}                      \
  bool test();                                          \
} TEST_##name##_Test_instance(#name, description);      \
bool TEST_##name##_Test::test()


// Example:
TEST(TEST1, "Test aaa") {
  std::cout << "[TEST1] Zzzz..." << std::endl;
  return true;
}

TEST(TEST2, "Test bbb") {
  std::cout << "[TEST2] Hmmm..." << std::endl;
  return true;
}

// Cusomized test case
class TEST3 : public TestSuite::TestCase {
public:
  TEST3(const char* n, const char* d)
    : TestSuite::TestCase(n, d) {
    std::cout << "[TEST3] Custom constructor" << std::endl;
  }
  ~TEST3() {
    std::cout << "[TEST3] Custom destructor" << std::endl;
  }
  bool test() {
    std::cout << "[TEST3] No macro" << std::endl;
    return true;
  };
} TEST3_instance("TEST3", "Test ccc");

int main(void) {
  bool result = TestSuite::run();
  std::cout << "[main] Result: " << (result ? "PASS" : "FAIL") << std::endl;
  return (result ? 0 : 1);
}