#include <gtest/gtest.h>

#include <autoopt/reactive.hpp>

TEST(Reactive, Simple) {
  using namespace autoopt;

  source<int> s1(0);
  source<int> s2(0);
  source<int> s3(0);
  transform<int, int, int> t1([](int x, int y) { return x + y; }, s1,s2);
  transform<int, int, int> t2([](int x, int y) { return x + y; }, s2,s3);

  ASSERT_EQ(t2.get(), 0);
  ASSERT_TRUE(s1.set(1));
  ASSERT_EQ(t2.get(), 1);
  s2.set(2);
  ASSERT_EQ(t2.get(), 3);
  s3.set(3);
  ASSERT_EQ(t2.get(), 6);
}