cpp-lazy-stream/test/fold_test.cxx

//
//  fold_test.cxx
//  stream-test
//
//  Created by Sam Jaffe on 4/5/23.
//

#include "stream/algorithm/fold.h"

#include "stream_helpers.h"
#include "stream_matchers.h"

TEST(FoldLeft, DifferentInitMakesDifferentResult) {
  std::vector<int> const input{1, 2, 3, 4, 5};

  EXPECT_THAT(ranges::fold_left(input, 0, std::multiplies<>()), 0);
  EXPECT_THAT(ranges::fold_left(input, 1, std::multiplies<>()), 120);
}