chessboard

elixir/chessboard/test/chessboard_test.exs

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+defmodule ChessboardTest do
+  use ExUnit.Case
+
+  @tag task_id: 1
+  test "rank_range is a range from 1 to 8" do
+    assert Chessboard.rank_range() == 1..8
+  end
+
+  @tag task_id: 2
+  test "file_range is a range from ?A to ?H" do
+    assert Chessboard.file_range() == ?A..?H
+  end
+
+  @tag task_id: 3
+  test "ranks is a list of integers from 1 to 8" do
+    assert Chessboard.ranks() == [1, 2, 3, 4, 5, 6, 7, 8]
+  end
+
+  @tag task_id: 4
+  test "files is a list of letters (strings) from A to H" do
+    assert Chessboard.files() == ["A", "B", "C", "D", "E", "F", "G", "H"]
+  end
+end

elixir/chessboard/test/test_helper.exs

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+ExUnit.start()
+ExUnit.configure(exclude: :pending, trace: true, seed: 0)