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space_spec.rb
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space_spec.rb
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require 'rspec'
require File.dirname(__FILE__) + '/../lib/space'
module TicTacToe
describe Space do
let(:board) do
Board.new([
[ "_", "_", "_"],
[ "X", "O", "_"],
[ "X", "_", "_"]
])
end
describe "#corner?" do
it "has 4 corners" do
corners = board.spaces.select { |space| space.corner? }
corners.should have(4).corners
end
it "includes 0, 0" do
board.find_space(0, 0).should be_corner
end
it "includes 0, 2" do
board.find_space(0, 2).should be_corner
end
it "includes 2, 0" do
board.find_space(2, 0).should be_corner
end
it "includes 2, 2" do
board.find_space(2, 2).should be_corner
end
end
describe "#edge?" do
it "has 4 edges" do
edges = board.spaces.select { |space| space.edge? }
edges.should have(4).edges
end
it "includes 0,1" do
board.find_space(0, 1).should be_edge
end
it "includes 1,0" do
board.find_space(1, 0).should be_edge
end
it "includes 1,2" do
board.find_space(1, 2).should be_edge
end
it "includes 2,1" do
board.find_space(2, 1).should be_edge
end
end
describe "#board" do
it "knows the board it is on" do
space = Space.new("_", 0, board)
space.board.should eql board
end
end
describe "#row" do
context "first row" do
it "contains the first space" do
space = Space.new("_", 0, board)
space.row.should eql 0
end
it "contains the second space" do
space = Space.new("_", 1, board)
space.row.should eql 0
end
it "contains the third space" do
space = Space.new("_", 2, board)
space.row.should eql 0
end
end
context "second row" do
it "contains the fourth space" do
space = Space.new("_", 3, board)
space.row.should eql 1
end
it "contains the fifth space" do
space = Space.new("_", 4, board)
space.row.should eql 1
end
it "contains the sixth space" do
space = Space.new("_", 5, board)
space.row.should eql 1
end
end
context "third row" do
it "contains the seventh space" do
space = Space.new("_", 6, board)
space.row.should eql 2
end
it "contains the eighth space" do
space = Space.new("_", 7, board)
space.row.should eql 2
end
it "contains the nineth space" do
space = Space.new("_", 8, board)
space.row.should eql 2
end
end
end
describe "#column" do
context "first column" do
it "contains the first space" do
space = Space.new("_", 0, board)
space.column.should eql 0
end
it "contains the fourth space" do
space = Space.new("_", 3, board)
space.column.should eql 0
end
it "contains the seventh space" do
space = Space.new("_", 6, board)
space.column.should eql 0
end
end
context "second column" do
it "contains the second space" do
space = Space.new("_", 1, board)
space.column.should eql 1
end
it "contains the fifth space" do
space = Space.new("_", 4, board)
space.column.should eql 1
end
it "contains the eighth space" do
space = Space.new("_", 7, board)
space.column.should eql 1
end
end
context "third column" do
it "contains the third space" do
space = Space.new("_", 2, board)
space.column.should eql 2
end
it "contains the sixth space" do
space = Space.new("_", 5, board)
space.column.should eql 2
end
it "contains the ninth space" do
space = Space.new("_", 8, board)
space.column.should eql 2
end
end
end
describe "#row_and_column" do
it "displays the row and column" do
space = Space.new("_", 8, board)
space.row_and_column.should eql "2 2"
end
end
describe "#open?" do
it "is open for a value of '_'" do
space = Space.new("_", 0, board)
space.should be_open
end
it "is not open when the value is not '_'" do
space = Space.new("X", 0, board)
space.should_not be_open
end
end
describe "#mark" do
it "marks the space for the player" do
space = Space.new("_", 0, board)
space.mark "X"
space.should be_marked_by "X"
end
end
describe "#marked_by?" do
context "when the space is marked" do
let(:space) { Space.new("X", 0, board) }
it "is marked by the player" do
space.should be_marked_by "X"
end
it "is not marked by the player" do
space.should_not be_marked_by "O"
end
end
context "when the space is open" do
it "is not marked by the player" do
space = Space.new("_", 0, board)
space.should_not be_marked_by "X"
space.should_not be_marked_by "O"
end
end
end
describe "#winning_space_for?" do
context "row" do
context "when a player can complete a row" do
it "is the winning space" do
board = Board.new([
["_", "X", "X"],
["_", "_", "_"],
["_", "_", "_"]
])
space = board.spaces.first
space.should be_winning_space_for "X"
end
it "is not the winning space if it has been taken" do
board = Board.new([ ["O", "X", "X"],
["_", "_", "_"],
["_", "_", "_"] ])
space = board.spaces.first
space.should_not be_winning_space_for "X"
end
end
context "when a player cannot complete a row" do
it "is not the winning space when only one space is marked" do
board = Board.new([
["_", "_", "X"],
["_", "_", "_"],
["_", "_", "_"]
])
space = board.spaces.first
space.should_not be_winning_space_for "X"
end
it "is not the winning space when no spaces have been marked" do
board = Board.new([
["_", "_", "_"],
["_", "_", "_"],
["_", "_", "_"]
])
space = board.spaces.first
space.should_not be_winning_space_for "X"
end
end
end
context "column" do
let(:board) do
Board.new([ ["X", "O", "O"],
["X", "O", "_"],
["_", "X", "_"] ])
end
context "when a player can complete the column" do
it "is the winning space" do
space = board.find_space(2, 0)
space.should be_winning_space_for "X"
end
end
context "when a player cannot complete a column" do
it "is not the winning space if it has been marked" do
space = board.find_space(0, 1)
space.should_not be_winning_space_for "X"
end
it "is not the winning space when only one space has been marked" do
space = board.find_space(1, 2)
space.should_not be_winning_space_for "X"
end
end
end
end
end
end