51 lines
1.1 KiB
Elixir
51 lines
1.1 KiB
Elixir
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defmodule GrainsTest do
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use ExUnit.Case
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test "square 1" do
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assert Grains.square(1) === {:ok, 1}
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end
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test "square 2" do
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assert Grains.square(2) === {:ok, 2}
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end
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test "square 3" do
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assert Grains.square(3) === {:ok, 4}
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end
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test "square 4" do
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assert Grains.square(4) === {:ok, 8}
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end
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test "square 16" do
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assert Grains.square(16) === {:ok, 32768}
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end
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test "square 32" do
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assert Grains.square(32) === {:ok, 2_147_483_648}
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end
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test "square 64" do
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assert Grains.square(64) === {:ok, 9_223_372_036_854_775_808}
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end
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test "total grains" do
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assert Grains.total() === {:ok, 18_446_744_073_709_551_615}
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end
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test "square greater than 64 returns an error" do
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assert Grains.square(65) ===
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{:error, "The requested square must be between 1 and 64 (inclusive)"}
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end
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test "negative square returns an error" do
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assert Grains.square(-1) ===
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{:error, "The requested square must be between 1 and 64 (inclusive)"}
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end
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test "square 0 returns an error" do
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assert Grains.square(0) ===
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{:error, "The requested square must be between 1 and 64 (inclusive)"}
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end
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end
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