67 lines
2.4 KiB
Elixir
67 lines
2.4 KiB
Elixir
defmodule Pinchflat.Utils.NumberUtilsTest do
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use Pinchflat.DataCase
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alias Pinchflat.Utils.NumberUtils
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describe "clamp/3" do
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test "returns the minimum when the number is less than the minimum" do
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assert NumberUtils.clamp(1, 2, 3) == 2
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end
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test "returns the maximum when the number is greater than the maximum" do
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assert NumberUtils.clamp(4, 2, 3) == 3
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end
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test "returns the number when it is between the minimum and maximum" do
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assert NumberUtils.clamp(2, 1, 3) == 2
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end
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end
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describe "human_byte_size/1" do
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test "converts byte size to human readable format" do
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assert NumberUtils.human_byte_size(1024) == {1, "KB"}
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assert NumberUtils.human_byte_size(1024 * 1024) == {1, "MB"}
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assert NumberUtils.human_byte_size(1024 * 1024 * 1024) == {1, "GB"}
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assert NumberUtils.human_byte_size(1024 * 1024 * 1024 * 1024) == {1, "TB"}
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assert NumberUtils.human_byte_size(1024 * 1024 * 1024 * 1024 * 1024) == {1, "PB"}
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assert NumberUtils.human_byte_size(1024 * 1024 * 1024 * 1024 * 1024 * 1024) == {1, "EB"}
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assert NumberUtils.human_byte_size(1024 * 1024 * 1024 * 1024 * 1024 * 1024 * 1024) == {1, "ZB"}
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assert NumberUtils.human_byte_size(1024 * 1024 * 1024 * 1024 * 1024 * 1024 * 1024 * 1024) == {1, "YB"}
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end
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test "returns the number when it is less than 1024" do
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assert NumberUtils.human_byte_size(512) == {512, "B"}
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end
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test "optionally takes a precision" do
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assert NumberUtils.human_byte_size(1234 * 1024, precision: 0) == {1, "MB"}
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assert NumberUtils.human_byte_size(1234 * 1024, precision: 1) == {1.2, "MB"}
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assert NumberUtils.human_byte_size(1234 * 1024, precision: 2) == {1.21, "MB"}
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end
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test "handles 0's well" do
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assert NumberUtils.human_byte_size(0) == {0, "B"}
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end
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test "handles nil well" do
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assert NumberUtils.human_byte_size(nil) == {0, "B"}
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end
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end
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describe "add_jitter/2" do
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test "returns 0 when the number is less than or equal to 0" do
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assert NumberUtils.add_jitter(0) == 0
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assert NumberUtils.add_jitter(-1) == 0
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end
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test "returns the number with jitter added" do
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assert NumberUtils.add_jitter(100) in 100..150
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end
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test "optionally takes a jitter percentage" do
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assert NumberUtils.add_jitter(100, 0.1) in 90..110
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assert NumberUtils.add_jitter(100, 0.5) in 50..150
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assert NumberUtils.add_jitter(100, 1) in 0..200
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end
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end
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end
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