117 lines
2.8 KiB
Elixir
117 lines
2.8 KiB
Elixir
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defmodule LanguageListTest do
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use ExUnit.Case
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describe "new/0" do
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@tag task_id: 1
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test "new list" do
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assert LanguageList.new() == []
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end
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end
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describe "add/2" do
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@tag task_id: 2
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test "add a language to a list" do
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language = "Elixir"
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list = [language]
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assert LanguageList.new() |> LanguageList.add(language) == list
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end
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@tag task_id: 2
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test "add several languages to a list" do
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list =
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LanguageList.new()
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|> LanguageList.add("Clojure")
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|> LanguageList.add("Haskell")
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|> LanguageList.add("Erlang")
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|> LanguageList.add("F#")
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|> LanguageList.add("Elixir")
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assert list == ["Elixir", "F#", "Erlang", "Haskell", "Clojure"]
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end
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end
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describe "remove/1" do
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@tag task_id: 3
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test "add then remove results in empty list" do
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list =
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LanguageList.new()
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|> LanguageList.add("Elixir")
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|> LanguageList.remove()
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assert list == []
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end
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@tag task_id: 3
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test "adding two languages, when removed, removes first item" do
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list =
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LanguageList.new()
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|> LanguageList.add("F#")
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|> LanguageList.add("Elixir")
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|> LanguageList.remove()
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assert list == ["F#"]
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end
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end
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describe "first/1" do
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@tag task_id: 4
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test "add one language, then get the first" do
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assert LanguageList.new() |> LanguageList.add("Elixir") |> LanguageList.first() == "Elixir"
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end
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@tag task_id: 4
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test "add a few languages, then get the first" do
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first =
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LanguageList.new()
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|> LanguageList.add("Elixir")
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|> LanguageList.add("Prolog")
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|> LanguageList.add("F#")
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|> LanguageList.first()
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assert first == "F#"
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end
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end
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describe "count/1" do
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@tag task_id: 5
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test "the count of a new list is 0" do
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assert LanguageList.new() |> LanguageList.count() == 0
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end
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@tag task_id: 5
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test "the count of a one-language list is 1" do
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count =
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LanguageList.new()
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|> LanguageList.add("Elixir")
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|> LanguageList.count()
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assert count == 1
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end
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@tag task_id: 5
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test "the count of a multiple-item list is equal to its length" do
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count =
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LanguageList.new()
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|> LanguageList.add("Elixir")
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|> LanguageList.add("Prolog")
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|> LanguageList.add("F#")
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|> LanguageList.count()
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assert count == 3
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end
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end
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describe "functional_list?/1" do
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@tag task_id: 6
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test "a functional language list" do
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assert LanguageList.functional_list?(["Clojure", "Haskell", "Erlang", "F#", "Elixir"])
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end
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@tag task_id: 6
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test "not a functional language list" do
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refute LanguageList.functional_list?(["Java", "C", "JavaScript"])
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end
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end
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end
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