187 lines
5.1 KiB
Elixir
187 lines
5.1 KiB
Elixir
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defmodule HighScoreTest do
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use ExUnit.Case
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# Trivia: Scores used in this test suite are based on lines of code
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# added to the elixir-lang/elixir github repository as of Apr 27, 2020.
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@tag task_id: 1
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test "new/1 result in empty score map" do
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assert HighScore.new() == %{}
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end
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describe "add_player/2" do
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@tag task_id: 2
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test "add player without score to empty score map" do
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scores = HighScore.new()
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assert HighScore.add_player(scores, "José Valim") == %{"José Valim" => 0}
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end
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@tag task_id: 2
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test "add two players without score to empty map" do
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scores =
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HighScore.new()
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|> HighScore.add_player("José Valim")
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|> HighScore.add_player("Chris McCord")
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assert scores == %{"Chris McCord" => 0, "José Valim" => 0}
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end
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@tag task_id: 2
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test "add player with score to empty score map" do
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scores =
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HighScore.new()
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|> HighScore.add_player("José Valim", 486_373)
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assert scores == %{"José Valim" => 486_373}
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end
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@tag task_id: 2
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test "add players with scores to empty score map" do
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scores =
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HighScore.new()
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|> HighScore.add_player("José Valim", 486_373)
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|> HighScore.add_player("Dave Thomas", 2_374)
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assert scores == %{"José Valim" => 486_373, "Dave Thomas" => 2_374}
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end
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end
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describe "remove_player/2" do
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@tag task_id: 3
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test "remove from empty score map results in empty score map" do
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scores =
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HighScore.new()
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|> HighScore.remove_player("José Valim")
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assert scores == %{}
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end
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@tag task_id: 3
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test "remove player after adding results in empty score map" do
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map =
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HighScore.new()
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|> HighScore.add_player("José Valim")
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|> HighScore.remove_player("José Valim")
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assert map == %{}
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end
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@tag task_id: 3
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test "remove first player after adding two results in map with remaining player" do
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scores =
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HighScore.new()
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|> HighScore.add_player("José Valim")
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|> HighScore.add_player("Chris McCord")
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|> HighScore.remove_player("José Valim")
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assert scores == %{"Chris McCord" => 0}
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end
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@tag task_id: 3
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test "remove second player after adding two results in map with remaining player" do
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scores =
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HighScore.new()
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|> HighScore.add_player("José Valim")
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|> HighScore.add_player("Chris McCord")
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|> HighScore.remove_player("Chris McCord")
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assert scores == %{"José Valim" => 0}
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end
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end
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describe "reset_score/2" do
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@tag task_id: 4
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test "resetting score for non-existent player sets player score to 0" do
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scores =
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HighScore.new()
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|> HighScore.reset_score("José Valim")
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assert scores == %{"José Valim" => 0}
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end
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@tag task_id: 4
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test "resetting score for existing player sets previous player score to 0" do
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scores =
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HighScore.new()
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|> HighScore.add_player("José Valim", 486_373)
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|> HighScore.reset_score("José Valim")
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assert scores == %{"José Valim" => 0}
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end
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end
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describe "update_score/3" do
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@tag task_id: 5
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test "update score for non existent player initializes value" do
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scores =
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HighScore.new()
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|> HighScore.update_score("José Valim", 486_373)
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assert scores == %{"José Valim" => 486_373}
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end
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@tag task_id: 5
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test "update score for existing player adds score to previous" do
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scores =
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HighScore.new()
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|> HighScore.add_player("José Valim")
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|> HighScore.update_score("José Valim", 486_373)
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assert scores == %{"José Valim" => 486_373}
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end
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@tag task_id: 5
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test "update score for existing player with non-zero score adds score to previous" do
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scores =
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HighScore.new()
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|> HighScore.add_player("José Valim")
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|> HighScore.update_score("José Valim", 1)
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|> HighScore.update_score("José Valim", 486_373)
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assert scores == %{"José Valim" => 486_374}
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end
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end
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describe "get_players/1" do
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@tag task_id: 6
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test "empty score map gives empty list" do
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scores_by_player =
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HighScore.new()
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|> HighScore.get_players()
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assert scores_by_player == []
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end
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@tag task_id: 6
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test "score map with one entry gives one result" do
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players =
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HighScore.new()
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|> HighScore.add_player("José Valim")
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|> HighScore.update_score("José Valim", 486_373)
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|> HighScore.get_players()
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assert players == ["José Valim"]
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end
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@tag task_id: 6
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test "score map with multiple entries gives results in unknown order" do
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players =
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HighScore.new()
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|> HighScore.add_player("José Valim", 486_373)
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|> HighScore.add_player("Dave Thomas", 2_374)
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|> HighScore.add_player("Chris McCord", 0)
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|> HighScore.add_player("Saša Jurić", 762)
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|> HighScore.get_players()
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|> Enum.sort()
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assert players == [
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"Chris McCord",
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"Dave Thomas",
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"José Valim",
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"Saša Jurić"
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]
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end
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end
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end
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