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https://github.com/TheRealOwenRees/chess-endgame-trainer.git
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owenrees
7717278561
* create endgame play section * add cache tests * normalise FENs - trim and fuill move to 1 on addition * remove svg on root and allow navbar to exist across all pages * update nav items
63 lines
2.0 KiB
Elixir
63 lines
2.0 KiB
Elixir
defmodule Chesstrainer.FENTest do
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use ExUnit.Case, async: true
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alias Chesstrainer.FEN
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describe "color_from_fen/1" do
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test "extracts white from the active-color field" do
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assert FEN.color_from_fen("8/8/3k4/8/8/3K1R2/8/8 w - - 0 1") == :white
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end
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test "extracts black from the active-color field" do
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assert FEN.color_from_fen("6k1/5p2/6p1/8/7p/8/6PP/6K1 b - - 0 1") == :black
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end
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test "returns nil when the active-color field is missing" do
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assert FEN.color_from_fen("8/8/8/8/8/8/8/8") == nil
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end
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end
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describe "normalize/1" do
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test "trims surrounding whitespace" do
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fen = "8/8/3k4/8/8/3K1R2/8/8 w - - 0 1"
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assert FEN.normalize(" \n" <> fen <> "\t\n") == fen
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end
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test "rewrites fullmove 0 to 1" do
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fen = "6k1/5p2/6p1/8/7p/8/6PP/6K1 b - - 0 0"
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assert FEN.normalize(fen) == "6k1/5p2/6p1/8/7p/8/6PP/6K1 b - - 0 1"
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end
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test "rewrites fullmove 0 even when the FEN has surrounding whitespace" do
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fen = "\n 6k1/5p2/6p1/8/7p/8/6PP/6K1 b - - 0 0 \t"
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assert FEN.normalize(fen) == "6k1/5p2/6p1/8/7p/8/6PP/6K1 b - - 0 1"
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end
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test "leaves a non-zero fullmove untouched" do
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fen = "8/8/3k4/8/8/3K1R2/8/8 w - - 0 5"
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assert FEN.normalize(fen) == fen
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end
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test "leaves a standard starting position untouched" do
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fen = "rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1"
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assert FEN.normalize(fen) == fen
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end
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test "passes through a non-FEN string unchanged" do
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assert FEN.normalize("not a fen") == "not a fen"
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end
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test "passes through a partial FEN (fewer than 6 fields) unchanged" do
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fen = "8/8/3k4/8/8/3K1R2/8/8 w - -"
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assert FEN.normalize(fen) == fen
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end
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test "passes through a FEN with a leading-zero fullmove unchanged" do
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# Fullmove 0 only matches the literal "0"; leading zeros stay so the
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# validator can surface them rather than silently masking the typo.
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fen = "8/8/3k4/8/8/3K1R2/8/8 w - - 0 00"
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assert FEN.normalize(fen) == fen
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end
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end
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end
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