All Files
(98.19%
covered at
12.26
hits/line)
7 files in total.
166 relevant lines.
163 lines covered and
3 lines missed
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module BoardGame
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end
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require_relative 'boardgame/piece'
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require_relative 'boardgame/tile'
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require_relative 'boardgame/map'
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#._________. A simple board / map of tiles
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#| 0123 X | =============================
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#| 0.... | Example 4X2 map,
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#| 1..#. | with a piece
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#| Y | placed in (2, 1)
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#`---------'
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class BoardGame::Map
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attr_reader :tiles, :height, :width
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def initialize(height, width)
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@height, @width = height, width
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validate_height
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initialize_map_tiles
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end
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# Retrieves a tile for a given X/Y coord.
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def [](x, y)
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return @tiles[x][y] if within? x, y
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end
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# Sets a tile for a given X/Y coord.
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def []=(x, y, tile)
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validate_coords(x, y)
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raise 'needs to be a tile' unless tile.is_a? BoardGame::Tile
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@tiles[x][y] = tile.move_to(x, y, self)
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end
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# Determine if x and y values are within the limits of the map.
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def within?(x, y)
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(x >= 0) && (x < height) && (y >= 0) && (y < height)
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end
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def inspect
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buffer = "\n"
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0.upto(max_y) do |ht|
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0.upto(max_x) do |wd|
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buffer += self[wd, ht].inspect
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end
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buffer += "\n"
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end
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return buffer
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end
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def as_json(*args)
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tiles.as_json
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end
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private
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def initialize_map_tiles
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@tiles = []
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0.upto(max_x) do |wd|
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@tiles[wd] = []
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0.upto(max_y) do |ht|
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self[wd, ht] = BoardGame::Tile.new({})
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end
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end
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end
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def max_x
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width - 1
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end
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def max_y
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height - 1
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end
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def validate_coords(x, y)
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raise "Coords out of range for #{height}x#{width} map." unless within? x, y
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end
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def validate_height
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unless height.is_a?(Fixnum) && width.is_a?(Fixnum)
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raise 'Expected height and width to be Fixnums'
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end
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end
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end
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# A piece on the board.
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class BoardGame::Piece
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attr_accessor :tile
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def move_to(new_tile)
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raise 'that isnt a tile' unless new_tile.is_a? BoardGame::Tile
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@tile.remove self if @tile
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@tile = new_tile
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@tile << self
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self
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end
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def inspect
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"+"
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end
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def as_json(*args)
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{}
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end
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end
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# A single tile on the map/board.
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class BoardGame::Tile
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attr_accessor :content, :x, :y, :map
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def initialize(x: nil , y: nil, map: nil, content: [])
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@content, @x, @y, @map = content, x, y, map
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end
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def move_to(x, y, map = @map)
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if map.within? x, y
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@x, @y, @map = x, y, map
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else
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raise 'invalid move'
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end
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self
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end
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def inspect
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content.empty? ? "□" : content.last.inspect
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end
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def <<(piece)
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piece.tile = self
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@content << piece
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end
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def remove(piece)
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piece.tile = nil
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@content.delete piece
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end
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def as_json(*args)
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{x: @x,
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y: @y,
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content: @content}
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end
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end
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require_relative "test_helper"
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class TestMap < Minitest::Test
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def map
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@map ||= BoardGame::Map.new(4, 4)
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end
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def test_new
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assert map.tiles.is_a?(Array),
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"Expected new maps to have a tiles array."
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end
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def test_within
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assert map.within?(2, 2),
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"Within did not identify coords within bounds"
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assert map.within?(0, 0),
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"Within did not identify coords within bounds"
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refute map.within?(-1, 0),
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"Within did not identify coords within bounds"
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refute map.within?(4, 4),
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"Within did not identify coords outside bounds"
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refute map.within?(5, 5),
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"Within did not identify coords outside bounds"
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end
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def test_set_tile
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map[1, 2] = BoardGame::Tile.new()
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assert map[1,2].is_a?(BoardGame::Tile),
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"Could not set tile on map."
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assert_raises RuntimeError do
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map[1, 2] = "Not a tile"
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end
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assert_raises RuntimeError do
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map[11, 4] = BoardGame::Tile.new
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end
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assert_raises RuntimeError do
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map[4, 11] = BoardGame::Tile.new
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end
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end
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def test_get_tile
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assert map[0, 1].is_a?(BoardGame::Tile),
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"Lookups of tiles should return Tile."
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map[1, 2] = BoardGame::Tile.new
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assert map[1,2].is_a?(BoardGame::Tile),
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"Could not set tile on map."
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assert_equal map[0,0].map, map,
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"Tile did not know where that it was owned by map `map`."
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end
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def test_inspect
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map[0, 0] = BoardGame::Tile.new
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map[3, 3] = BoardGame::Tile.new
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map[2, 1] << BoardGame::Piece.new
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expectation = "\n"\
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"□□□□\n"\
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"□□+□\n"\
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"□□□□\n"\
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"□□□□\n"
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assert_equal map.inspect, expectation,
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"Maps dont look right in console."
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end
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def test_validate_height
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assert_raises RuntimeError do
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BoardGame::Map.new "1", 1
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end
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end
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def test_serialization
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binding.pry
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end
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end
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require_relative "test_helper"
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class TestPiece < Minitest::Test
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def setup
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@map = BoardGame::Map.new(5, 5)
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@piece = BoardGame::Piece.new
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end
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def test_inspect
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assert @piece.inspect == "+"
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end
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def test_move_to
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assert_raises RuntimeError do
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@piece.move_to [2, 2]
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end
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result = @piece.move_to @map[2,2]
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assert @piece.tile == @map[2, 2]
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assert @map[2,2].content.first == @piece
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assert result == @piece
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@piece.move_to @map[2,2]
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assert @piece.tile == @map[2,2]
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end
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end
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require_relative "test_helper"
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class TestTile < Minitest::Test
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def test_new
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assert BoardGame::Tile.new.is_a?(BoardGame::Tile),
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"Expected new tile to be."
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end
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def test_insertion
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tile = BoardGame::Tile.new
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piece = BoardGame::Piece.new
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tile << piece
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assert tile.content.first == piece,
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"Did not put piece on tile."
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end
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def test_removal
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tile = BoardGame::Tile.new
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piece = BoardGame::Piece.new
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tile << piece
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assert tile.content.first == piece,
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"Did not put piece on tile."
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tile.remove(piece)
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assert tile.content.length == 0,
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"Unable to remove pieces from tiles."
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end
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def test_inspect
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tile = BoardGame::Tile.new
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assert tile.inspect == "□",
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"Expected empty tile to show □"
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piece = BoardGame::Piece.new
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tile << piece
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assert tile.inspect == piece.inspect,
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"Expected occupied tiles to show top piece when inspected."
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end
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def test_move_to
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map = BoardGame::Map.new(2, 2)
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tile = map[0, 0]
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piece = BoardGame::Piece.new
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tile << piece
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assert piece.tile == tile
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assert tile.x == 0
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assert tile.y == 0
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assert tile.map == map
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new_map = BoardGame::Map.new(2, 2)
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tile.move_to(1, 1, new_map)
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assert piece.tile == tile
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assert tile.x == 1
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assert tile.y == 1
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assert tile.map == new_map
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assert_raises RuntimeError do
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tile.move_to(2, 2)
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end
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end
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end
