Alek Ratzloff
6d503089e4
For some reason there doesn't appear to be a binary search function in Elixir's standard library, so this implements that. Signed-off-by: Alek Ratzloff <alekratz@gmail.com>
33 lines
926 B
Elixir
33 lines
926 B
Elixir
alias Omnibot.Util
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defmodule Omnibot.UtilTest do
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use ExUnit.Case, async: true
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test "string_empty?" do
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assert Util.string_empty?("")
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assert !Util.string_empty?("asdf")
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end
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test "string_or_nil" do
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assert Util.string_or_nil("") == nil
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assert Util.string_or_nil("asdf") == "asdf"
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end
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test "binary_search" do
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indexes = 0..10 |> Enum.to_list()
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values = indexes |> Enum.map(&({&1, &1 * 2}))
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assert Enum.map(indexes, &(Util.binary_search(values, &1))) == values
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indexes = 0..101 |> Enum.to_list()
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values = indexes |> Enum.map(&({&1, &1 * 2}))
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assert Enum.map(indexes, &(Util.binary_search(values, &1))) == values
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values = [a: 15, b: 22, c: -1, d: 0]
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assert Util.binary_search(values, :a) == {0, 15}
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assert Util.binary_search(values, :b) == {1, 22}
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assert Util.binary_search(values, :c) == {2, -1}
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assert Util.binary_search(values, :d) == {3, 0}
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end
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end
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