64 lines
2 KiB
Elixir
64 lines
2 KiB
Elixir
defmodule Microwaveprop.Rover.ProminenceTest do
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use ExUnit.Case, async: true
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alias Microwaveprop.Rover.Prominence
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describe "prominence_map/2" do
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test "returns map keyed by {lat, lon}" do
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cells = [%{lat: 33.0, lon: -97.0}, %{lat: 33.1, lon: -97.1}]
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elev_lookup = fn points ->
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Map.new(points, fn p -> {p, 200} end)
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end
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result = Prominence.prominence_map(cells, elev_lookup: elev_lookup)
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assert is_map(result)
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assert Map.has_key?(result, {33.0, -97.0})
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assert Map.has_key?(result, {33.1, -97.1})
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end
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test "cell sitting above neighbours has positive prominence" do
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elev_lookup = fn points ->
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Map.new(points, fn
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{33.0, -97.0} -> {{33.0, -97.0}, 300}
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p -> {p, 100}
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end)
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end
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result = Prominence.prominence_map([%{lat: 33.0, lon: -97.0}], elev_lookup: elev_lookup)
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assert result[{33.0, -97.0}] > 0
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end
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test "cell at same elevation as neighbours has zero prominence" do
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elev_lookup = fn points ->
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Map.new(points, fn p -> {p, 150} end)
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end
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result = Prominence.prominence_map([%{lat: 33.0, lon: -97.0}], elev_lookup: elev_lookup)
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assert result[{33.0, -97.0}] == 0
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end
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test "neighbours with nil elevations are excluded from ring average" do
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elev_lookup = fn points ->
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Map.new(points, fn
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{33.0, -97.0} -> {{33.0, -97.0}, 200}
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p -> {p, nil}
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end)
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end
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result = Prominence.prominence_map([%{lat: 33.0, lon: -97.0}], elev_lookup: elev_lookup)
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assert result[{33.0, -97.0}] == nil
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end
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test "single cell returns nil prominence (no neighbours to compare)" do
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elev_lookup = fn _points -> %{{45.0, -120.0} => 500} end
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result = Prominence.prominence_map([%{lat: 45.0, lon: -120.0}], elev_lookup: elev_lookup)
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assert result[{45.0, -120.0}] == nil
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end
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test "empty cells list returns empty map" do
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assert Prominence.prominence_map([]) == %{}
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end
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end
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end
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