75 lines
2.4 KiB
Elixir
75 lines
2.4 KiB
Elixir
# original source: https://github.com/nikolaostoji/elixir-lru-cache/blob/47742fe1f49a75a08ef4a4146373d762348b6546/test/lru_cache_test.exs
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defmodule LruCacheTest do
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use ExUnit.Case
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doctest Floof.LruCache
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setup_all do
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{:ok, server_pid} = Floof.LruCache.create(3, :LruCache)
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{:ok, server: server_pid}
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end
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setup do
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Floof.LruCache.clear(:LruCache)
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:ok
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end
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test "tests put() returns true when adding element" do
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assert Floof.LruCache.put(:LruCache, "abc", "123") == true
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end
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test "tests get() returns ok if key is in cache" do
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Floof.LruCache.put(:LruCache, "abc", "123")
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assert Floof.LruCache.get(:LruCache, "abc") == "123"
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end
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test "tests get() returns nil if key DNE in cache" do
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assert Floof.LruCache.get(:LruCache, "abc") == nil
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end
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test "tests delete() removes element" do
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Floof.LruCache.put(:LruCache, "abc", "123")
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assert Floof.LruCache.get(:LruCache, "abc") == "123"
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Floof.LruCache.delete(:LruCache, "abc")
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assert Floof.LruCache.get(:LruCache, "abc") == nil
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end
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test "tests adding when at capacity will remove item that was lru" do
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Floof.LruCache.put(:LruCache, "a", "1")
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Floof.LruCache.put(:LruCache, "b", "2")
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Floof.LruCache.put(:LruCache, "c", "3")
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Floof.LruCache.put(:LruCache, "d", "4")
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assert Floof.LruCache.get(:LruCache, "a") == nil
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assert Floof.LruCache.get(:LruCache, "b") == "2"
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assert Floof.LruCache.get(:LruCache, "c") == "3"
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assert Floof.LruCache.get(:LruCache, "d") == "4"
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end
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test "tests fetching an item will reset its position" do
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Floof.LruCache.put(:LruCache, "a", "1")
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Floof.LruCache.put(:LruCache, "b", "2")
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Floof.LruCache.put(:LruCache, "c", "3")
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Floof.LruCache.get(:LruCache, "a")
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Floof.LruCache.put(:LruCache, "d", "4")
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assert Floof.LruCache.get(:LruCache, "a") == "1"
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assert Floof.LruCache.get(:LruCache, "b") == nil
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assert Floof.LruCache.get(:LruCache, "c") == "3"
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assert Floof.LruCache.get(:LruCache, "d") == "4"
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end
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test "tests deleting an item frees up room" do
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Floof.LruCache.put(:LruCache, "a", "1")
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Floof.LruCache.put(:LruCache, "b", "2")
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Floof.LruCache.put(:LruCache, "c", "3")
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Floof.LruCache.delete(:LruCache, "c")
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Floof.LruCache.put(:LruCache, "d", "4")
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assert Floof.LruCache.get(:LruCache, "a") == "1"
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assert Floof.LruCache.get(:LruCache, "b") == "2"
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assert Floof.LruCache.get(:LruCache, "c") == nil
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assert Floof.LruCache.get(:LruCache, "d") == "4"
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end
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end
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