75 lines
1.7 KiB
Crystal
75 lines
1.7 KiB
Crystal
require "./spec_helper"
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describe Sudoku::Board do
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it "initialized grid with nil values" do
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board = Sudoku::Board.new(9, 3)
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board.get(0, 0).should eq nil
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end
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it "raises exception if board size is not divisible by block size" do
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expect_raises(Sudoku::BoardException) do
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Sudoku::Board.new(9, 4)
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end
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end
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it "puts numbers correctly" do
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board = Sudoku::Board.new(9, 3)
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board.put(1, 0, 0)
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board.get(0, 0).should eq 1
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end
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it "extracts rows correctly" do
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row = 1
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board = Sudoku::Board.new(4, 2)
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(0..3).each { |i| board.put(i, i, row) }
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board.extract_row(row).should eq [0, 1, 2, 3]
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end
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it "extracts columns correctly" do
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column = 2
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board = Sudoku::Board.new(4, 2)
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(0..3).each { |i| board.put(i, column, i) }
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board.extract_column(column).should eq [0, 1, 2, 3]
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end
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it "extracts blocks correctly" do
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board = Sudoku::Board.new(4, 2)
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board.put(42, 2, 0)
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board.put(43, 3, 0)
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board.put(44, 2, 1)
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board.put(45, 3, 1)
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board.extract_block(3, 1).should eq [[42, 43], [44, 45]]
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end
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it "validates cells correctly" do
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board = Sudoku::Board.new(9, 3)
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board.put(1, 0, 0)
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board.put(2, 0, 1)
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board.put(3, 1, 0)
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board.valid?(4, 0, 2).should be_true
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board.valid?(4, 2, 0).should be_true
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board.valid?(3, 0, 2).should be_false
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board.valid?(3, 2, 0).should be_false
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end
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it "should print the board correctly" do
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board = Sudoku::Board.new(4, 2)
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(0..3).each { |i| board.put(i, i, i) }
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board.to_s.should eq \
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"0...\n" \
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".1..\n" \
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"..2.\n" \
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"...3"
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end
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it "should not be complete if there are nulls" do
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board = Sudoku::Board.new(4, 2)
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(0..3).each { |i| board.put(i, i, i) }
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board.complete?.should be_false
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end
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end
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