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require 'spec_helper'
require 'board'
describe Board do
before do
@board = Board.new
end
it 'starts with a grid of dots' do
@board.instance_variable_get('@board').must_equal [
['.', '.', '.'],
['.', '.', '.'],
['.', '.', '.']
]
end
describe '#render' do
it 'must be a grid' do
@board.render.must_equal <<EOF
...
...
...
EOF
end
it 'must be the correct board' do
@board.instance_variable_set(:@board, [
['.', 'X', 'O'],
['X', '.', '.'],
['.', '.', '.'],
])
@board.render.must_equal <<EOF
.XO
X..
...
EOF
end
end
describe '#transform_coordinates' do
it 'converts string coordinates to an array' do
@board.transform_coordinates('0,4').must_equal [0, 4]
end
it "returns nil if coordinates don't match the format" do
@board.transform_coordinates('4').must_be_nil
@board.transform_coordinates('4 2').must_be_nil
@board.transform_coordinates('booyakacha').must_be_nil
@board.transform_coordinates('booya,kacha').must_be_nil
end
end
describe '#update_cell' do
it 'updates a given cell with a given value' do
value = 'X'
@board.update_cell(1, 2, value)
@board.instance_variable_get(:@board)[1][2].must_equal value
end
end
describe '#winner?' do
before do
@board = Board.new
end
it 'must be nil when no player has won' do
@board.winner?.must_be_nil
end
it 'must be the winning player' do
end
it 'counts horizontal matches as wins' do
@board.instance_variable_set(:@board, [
['X', 'X', 'X'],
['X', 'O', 'O'],
['O', 'X', 'O'],
])
@board.winner?.must_equal 'X'
@board.instance_variable_set(:@board, [
['X', 'O', 'X'],
['O', 'O', 'O'],
['O', 'X', 'X'],
])
@board.winner?.must_equal 'O'
@board.instance_variable_set(:@board, [
['O', 'X', 'X'],
['X', 'O', 'X'],
['O', 'O', 'O'],
])
@board.winner?.must_equal 'O'
end
it 'counts vertical matches as wins' do
@board.instance_variable_set(:@board, [
['X', 'O', 'X'],
['X', 'O', 'O'],
['X', 'X', 'O'],
])
@board.winner?.must_equal 'X'
@board.instance_variable_set(:@board, [
['X', 'O', 'X'],
['X', 'O', 'O'],
['O', 'O', 'X'],
])
@board.winner?.must_equal 'O'
@board.instance_variable_set(:@board, [
['O', 'X', 'X'],
['X', 'O', 'X'],
['O', 'O', 'X'],
])
@board.winner?.must_equal 'X'
end
it 'counts diagonal matches as wins' do
@board.instance_variable_set(:@board, [
['O', 'X', 'X'],
['X', 'O', 'O'],
['O', 'X', 'O'],
])
@board.winner?.must_equal 'O'
@board.instance_variable_set(:@board, [
['X', 'O', 'X'],
['O', 'X', 'O'],
['O', 'X', 'X'],
])
@board.winner?.must_equal 'X'
end
end
describe '#array_items_equal' do
it 'is true when all elements in the array are equal' do
Board.new.send(:array_items_equal,
['X', 'X', 'X', 'X', 'X', 'X', 'X']).must_equal true
end
it 'is false when any element is not equal to the rest' do
Board.new.send(:array_items_equal,
['X', 'O', 'X', 'X', 'X', 'X', 'X']).must_equal false
end
end
end
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