#include "s0017_letter_combinations_of_a_phone_number.hpp"

#include <gtest/gtest.h>

TEST(Problem17, Case1) {
  string i{"23"};
  vector<string> o{"ad", "bd", "cd", "ae", "be", "ce", "af", "bf", "cf"};
  S0017 solution;
  EXPECT_EQ(solution.letterCombinations(i), o);
}

TEST(Problem17, Case2) {
  string i{""};
  vector<string> o{};
  S0017 solution;
  EXPECT_EQ(solution.letterCombinations(i), o);
}

TEST(Problem17, Case3) {
  string i{"2"};
  vector<string> o{"a", "b", "c"};
  S0017 solution;
  EXPECT_EQ(solution.letterCombinations(i), o);
}