Refactor day1_solve_part_2 to accept input file path as an argument, …

…also add failing tests

lib/advent_of_code2023.ex

@@ -16,13 +16,14 @@ defmodule AdventOfCode2023 do
     Enum.sum(number_list)
   end
 
-  def day1_solve_part_2() do
-    string_list = Day1.parse_file("lib/day1/data/input.txt")
+  def day1_solve_part_2(input_file_path) do
+    string_list = Day1.parse_file(input_file_path)
 
     replaced_number_list =
       Enum.map(string_list, &Day1.convert_substrings_to_integer_strings/1)
 
     number_list = Enum.map(replaced_number_list, &Day1.combine_first_and_last_number/1)
+    IO.inspect(number_list)
     Enum.sum(number_list)
   end
 end

test/day1/day1_solves_test.exs

@@ -11,6 +11,6 @@ defmodule Day1SolvesTest do
   end
 
   test "solves the day 1 part II puzzle correctly" do
-    assert AdventOfsCode2023.day1_solve_part_2("./test/day1/mocks/part1-test-case.txt") == 281
+    assert AdventOfCode2023.day1_solve_part_2("./test/day1/mocks/part2-test-case.txt") == 281
   end
 end

test/day1/day1_test.exs

@@ -61,4 +61,15 @@ defmodule Day1Test do
            ) ==
              "0 1 2 3 4 5 6 7 8 9"
   end
+
+  test "should convert substrings according to a replacement map" do
+    translation_map = %{
+      "meow" => "woof",
+      "woof" => "meow"
+    }
+
+    test_string = "meow woof"
+
+    assert Day1.replace_substrings(test_string, translation_map) == "woof meow"
+  end
 end