chore: make language folders snake_case

8 files changed, 281 insertions, 0 deletions

diff --git a/2024/ocaml/test/day_01_part_01.ml b/2024/ocaml/test/day_01_part_01.ml
new file mode 100644
index 0000000..824c95b
--- /dev/null
+++ b/2024/ocaml/test/day_01_part_01.ml
@@ -0,0 +1,27 @@
+open OUnit2
+open AoC_2024.Day_01.Part_01
+
+let tests =
+  "test suite for day 01 part 01"
+  >::: [
+         ("empty list is 0" >:: fun _ -> assert_equal 0 (solve [] []));
+         ( "distance between 0 and 1 is 1" >:: fun _ ->
+           assert_equal 1 (solve [ 0 ] [ 1 ]) );
+         ( "distance between 1 and 0 is 1" >:: fun _ ->
+           assert_equal 1 (solve [ 1 ] [ 0 ]) );
+         ( "smallest are paired, then next smallest, ..." >:: fun _ ->
+           assert_equal 0 (solve [ 1; 2; 3 ] [ 3; 2; 1 ]) );
+         (* See https://adventofcode.com/2024/day/1 *)
+         ( "solves example correctly" >:: fun _ ->
+           assert_equal 11 (solve [ 3; 4; 2; 1; 3; 3 ] [ 4; 3; 5; 3; 9; 3 ]) );
+         ( "same number is 0 distance apart" >:: fun _ ->
+           assert_equal 0 (calculate_distance 0 0) );
+         ( "same number is 0 distance apart" >:: fun _ ->
+           assert_equal 0 (calculate_distance 1 1) );
+         ( "distance is equal to abs(x - y)" >:: fun _ ->
+           assert_equal 1 (calculate_distance 0 1) );
+         ( "order of inputs doesn't matter" >:: fun _ ->
+           assert_equal 1 (calculate_distance 1 0) );
+       ]
+
+let _ = run_test_tt_main tests
diff --git a/2024/ocaml/test/day_01_part_02.ml b/2024/ocaml/test/day_01_part_02.ml
new file mode 100644
index 0000000..f7340df
--- /dev/null
+++ b/2024/ocaml/test/day_01_part_02.ml
@@ -0,0 +1,17 @@
+open OUnit2
+open AoC_2024.Day_01.Part_02
+
+let test_solve =
+  "test suite for day 01 part 02"
+  >::: [
+         ("empty list is 0" >:: fun _ -> assert_equal 0 (solve [] []));
+         ( "ten x zero occurrances of ten" >:: fun _ ->
+           assert_equal 0 (solve [ 10 ] [ 1; 2; 3 ]) );
+         ( "two x three occurrances of two" >:: fun _ ->
+           assert_equal 6 (solve [ 2 ] [ 2; 2; 2 ]) );
+         (* See https://adventofcode.com/2024/day/1#part2 *)
+         ( "solves example correctly" >:: fun _ ->
+           assert_equal 31 (solve [ 3; 4; 2; 1; 3; 3 ] [ 4; 3; 5; 3; 9; 3 ]) );
+       ]
+
+let _ = run_test_tt_main test_solve
diff --git a/2024/ocaml/test/day_02_part_01.ml b/2024/ocaml/test/day_02_part_01.ml
new file mode 100644
index 0000000..36af248
--- /dev/null
+++ b/2024/ocaml/test/day_02_part_01.ml
@@ -0,0 +1,38 @@
+open OUnit2
+open AoC_2024.Day_02.Part_01
+
+let tests =
+  "test suite for day 2 part 1"
+  >::: [
+         ( "empty list should have no valid reports" >:: fun _ ->
+           assert_equal 0 (solve []) );
+         ( "valid report should count as one" >:: fun _ ->
+           assert_equal 1 (solve [ [ 7; 6; 4; 2; 1 ] ]) );
+         ( "example correct" >:: fun _ ->
+           assert_equal 2
+             (solve
+                [
+                  [ 7; 6; 4; 2; 1 ];
+                  [ 1; 2; 7; 8; 9 ];
+                  [ 9; 7; 6; 2; 1 ];
+                  [ 1; 3; 2; 4; 5 ];
+                  [ 8; 6; 4; 4; 1 ];
+                  [ 1; 3; 6; 7; 9 ];
+                ]) );
+         ( "all increasing" >:: fun _ ->
+           assert_equal true (check_report_safety [ 1; 2; 3 ]) );
+         ( "all decreasing" >:: fun _ ->
+           assert_equal true (check_report_safety [ 3; 2; 1 ]) );
+         ( "increasing and decreasing" >:: fun _ ->
+           assert_equal false (check_report_safety [ 1; 3; 2 ]) );
+         ( "change of at least one" >:: fun _ ->
+           assert_equal true (check_report_safety [ 1; 2; 3 ]) );
+         ( "no change" >:: fun _ ->
+           assert_equal false (check_report_safety [ 1; 1; 2 ]) );
+         ( "change of at most three" >:: fun _ ->
+           assert_equal true (check_report_safety [ 1; 2; 4; 7 ]) );
+         ( "change of at more than three" >:: fun _ ->
+           assert_equal false (check_report_safety [ 1; 5 ]) );
+       ]
+
+let _ = run_test_tt_main tests
diff --git a/2024/ocaml/test/day_03_part_01.ml b/2024/ocaml/test/day_03_part_01.ml
new file mode 100644
index 0000000..0db039a
--- /dev/null
+++ b/2024/ocaml/test/day_03_part_01.ml
@@ -0,0 +1,29 @@
+open OUnit2
+open AoC_2024.Day_03.Part_01
+
+let example_input =
+  "xmul(2,4)%&mul[3,7]!@^do_not_mul(5,5)+mul(32,64]then(mul(11,8)mul(8,5))"
+
+let test_find_mul _ =
+  assert_equal
+    [ "mul(2,4)"; "mul(5,5)"; "mul(11,8)"; "mul(8,5)" ]
+    (let result = find_mul example_input in
+     List.map (fun x -> Re2.Match.get_exn x ~sub:(`Index 0)) result)
+
+let test_extract_pairs _ =
+  assert_equal
+    [ (2, 4); (5, 5); (11, 8); (8, 5) ]
+    (let matches = find_mul example_input in
+     extract_pairs matches)
+
+let test_solve _ = assert_equal ~printer:string_of_int 161 (solve example_input)
+
+let tests =
+  "test suite for day 3 part 1"
+  >::: [
+         "muls extracted from example correctly" >:: test_find_mul;
+         "pairs extracted from matches" >:: test_extract_pairs;
+         "example correctly solved" >:: test_solve;
+       ]
+
+let _ = run_test_tt_main tests
diff --git a/2024/ocaml/test/day_04_part_01.ml b/2024/ocaml/test/day_04_part_01.ml
new file mode 100644
index 0000000..9550e5b
--- /dev/null
+++ b/2024/ocaml/test/day_04_part_01.ml
@@ -0,0 +1,151 @@
+open OUnit2
+open AoC_2024.Day_04.Part_01
+
+let example_input =
+  [
+    "MMMSXXMASM";
+    "MSAMXMSMSA";
+    "AMXSXMAAMM";
+    "MSAMASMSMX";
+    "XMASAMXAMM";
+    "XXAMMXXAMA";
+    "SMSMSASXSS";
+    "SAXAMASAAA";
+    "MAMMMXMMMM";
+    "MXMXAXMASX";
+  ]
+
+let is_in_bounds_tests =
+  let test_is_in_bounds expected length index _ =
+    let actual = is_in_bounds length index in
+    assert_equal ~printer:string_of_bool expected actual
+  in
+  [
+    "not in bounds if below 0" >:: test_is_in_bounds false 1 (-1);
+    "in bounds if gte 0 and lt length" >:: test_is_in_bounds true 1 0;
+    "not in bounds if eq length" >:: test_is_in_bounds false 1 1;
+    "not in bounds if gt length" >:: test_is_in_bounds false 1 2;
+  ]
+
+let calculate_num_of_matches_tests =
+  let test_calculate_num_of_matches expected line row_offset character _ =
+    let actual = calculate_num_of_matches line row_offset character in
+    assert_equal ~printer:string_of_int expected actual
+  in
+  [
+    "is 0 when no matches present"
+    >:: test_calculate_num_of_matches 0 "SMMX" 1 { index = 3; character = 'X' };
+    "is 1 when only one match present - top to bottom"
+    >::
+    (*
+      |.|X|.|
+      |.|M|.|
+      |.|A|.|
+      |.|S|.|
+    *)
+    test_calculate_num_of_matches 1 ".X..M..A..S." 3
+      { index = 1; character = 'X' };
+    "is 1 when only one match present - top to bottom edge"
+    >::
+    (*
+      |X|.|.|
+      |M|.|.|
+      |A|.|.|
+      |S|.|.|
+    *)
+    test_calculate_num_of_matches 1 "X..M..A..S.." 3
+      { index = 0; character = 'X' };
+    "is 1 when only one match present - bottom to top"
+    >::
+    (*
+      |.|S|.|
+      |.|A|.|
+      |.|M|.|
+      |.|X|.|
+    *)
+    test_calculate_num_of_matches 1 ".S..A..M..X." 3
+      { index = 10; character = 'X' };
+    "is 1 when only one match present - left to right"
+    >::
+    (*
+      |X|M|A|S|
+    *)
+    test_calculate_num_of_matches 1 "XMAS" 4 { index = 0; character = 'X' };
+    "is 1 when only one match present - right to left"
+    >::
+    (*
+      |S|A|M|X|
+    *)
+    test_calculate_num_of_matches 1 "SAMX" 4 { index = 3; character = 'X' };
+    "is 1 when only one match present - bottom right to top left"
+    >::
+    (*
+      |S|.|.|.|
+      |.|A|.|.|
+      |.|.|M|.|
+      |.|.|.|X|
+    *)
+    test_calculate_num_of_matches 1 "S....A....M....X" 4
+      { index = 15; character = 'X' };
+    "is 1 when only one match present - top left to bottom right"
+    >::
+    (*
+      |X|.|.|.|
+      |.|M|.|.|
+      |.|.|A|.|
+      |.|.|.|S|
+    *)
+    test_calculate_num_of_matches 1 "X....M....A....S" 4
+      { index = 0; character = 'X' };
+    "is 1 when only one match present - bottom left to top right"
+    >::
+    (*
+      |.|.|.|S|
+      |.|.|A|.|
+      |.|M|.|.|
+      |X|.|.|.|
+    *)
+    test_calculate_num_of_matches 1 "...S..A..M..X..." 4
+      { index = 12; character = 'X' };
+    "is 1 when only one match present - top right to bottom left"
+    >::
+    (*
+      |.|.|.|X|
+      |.|.|M|.|
+      |.|A|.|.|
+      |S|.|.|.|
+    *)
+    test_calculate_num_of_matches 1 "...X..M..A..S..." 4
+      { index = 3; character = 'X' };
+    "is 8 when matches present in all possible directions"
+    >::
+    (*
+            |S|.|.|S|.|.|S|
+            |.|A|.|A|.|A|.|
+            |.|.|M|M|M|.|.|
+            |S|A|M|X|M|A|S|
+            |.|.|M|M|M|.|.|
+            |.|A|.|A|.|A|.|
+            |S|.|.|S|.|.|S|
+    *)
+    test_calculate_num_of_matches 8
+      "S..S..S.A.A.A...MMM..SAMXMAS..MMM...A.A.A.S..S..S" 7
+      { index = 24; character = 'X' };
+  ]
+
+let solve_tests =
+  let test_solve expected lines _ =
+    let actual = solve lines in
+    assert_equal ~printer:string_of_int expected actual
+  in
+  [
+    "example is solved correctly" >:: test_solve 18 example_input;
+    "minimal example is solved correctly"
+    >:: test_solve 4 [ "..X..."; ".SAMX."; ".A..A."; "XMAS.S"; ".X...." ];
+  ]
+
+let tests =
+  "test suite for day 4 part 1"
+  >::: is_in_bounds_tests @ calculate_num_of_matches_tests @ solve_tests
+
+let _ = run_test_tt_main tests
diff --git a/2024/ocaml/test/day_05_part_01.ml b/2024/ocaml/test/day_05_part_01.ml
new file mode 100644
index 0000000..0f50476
--- /dev/null
+++ b/2024/ocaml/test/day_05_part_01.ml
@@ -0,0 +1,4 @@
+open OUnit2
+
+let tests = "test suite for day n part 1" >::: []
+let _ = run_test_tt_main tests
diff --git a/2024/ocaml/test/dune b/2024/ocaml/test/dune
new file mode 100644
index 0000000..e19cbe9
--- /dev/null
+++ b/2024/ocaml/test/dune
@@ -0,0 +1,10 @@
+(tests
+ (names
+  day_01_part_01
+  day_01_part_02
+  day_02_part_01
+  day_03_part_01
+  day_04_part_01
+  grid)
+ (modes byte exe)
+ (libraries AoC_2024 ounit2))
diff --git a/2024/ocaml/test/grid.ml b/2024/ocaml/test/grid.ml
new file mode 100644
index 0000000..bd384cd
--- /dev/null
+++ b/2024/ocaml/test/grid.ml
@@ -0,0 +1,5 @@
+open OUnit2
+open AoC_2024.Grid
+
+let tests = "" >::: []
+let _ = run_test_tt_main tests