require 'minesweeper'

describe Minesweeper do

  before(:each) do
    @ms = Minesweeper::Game.new
  end

  it 'creates fields from input' do
    @ms.input '4 4'
    @ms.fields.length.should eq 1
  end

  it 'sets field row & column size from input' do
    @ms.input '4 6'

    f = @ms.fields[0]

    f.num_rows.should eq 4
    f.num_cols.should eq 6
  end

  it 'allows row and column size in the range 1..100' do
    expect {
      @ms.input '199 0'
    }.to raise_error 'num rows not in range'

    expect {
      @ms.input '1 0'
    }.to raise_error 'num cols not in range'
  end

  it 'takes row input after field size input' do
    @ms.input '4 4'

    expect {
      @ms.input '4 4'
    }.to raise_error 'input does not define field row'

    @ms.input '...*'
    @ms.input '*.*.'

    f = @ms.fields[0]

    f.data[0].join.should eq '...*'
    f.data[1].join.should eq '*.*.'
  end

  it 'expects row input to match defined column size' do 
    @ms.input '4 4'

    expect {
      @ms.input '...**'
    }.to raise_error 'too many columns input, expected 4, received 5'
  end
  
  it 'expects row inou to only contain valid characters' do 
    @ms.input '4 4'

    expect {
      @ms.input '...*ABC'
    }.to raise_error 'input does not define field row'
  end


  it 'expects number of row inputs to not be less than defined row size' do
    @ms.input '2 4'
    @ms.input '*...'

    expect {
      @ms.input '2 4'
    }.to raise_error 'input does not define field row'
  end

  it 'expects number of row inputs to not be greater than defined row size' do
    @ms.input '2 4'
    @ms.input '*...'
    @ms.input '*...'

    expect {
      @ms.input '*...'
    }.to raise_error 'too many rows, expected new field or end of input'
  end


  it 'stops accepting input when n=m=0' do
    @ms.input '2 4'
    @ms.input '*...'
    @ms.input '*...'
    @ms.input '0 0'

    expect {
      @ms.input '2 4'
    }.to raise_error 'input not processed. end-of-input message already received'
  end


  it 'outputs field number message and adjacent mine count' do
    @ms.input '4 4'
    @ms.input '*...'
    @ms.input '....'
    @ms.input '.*..'
    @ms.input '....'
    @ms.input '3 5'
    @ms.input '**...'
    @ms.input '.....'
    @ms.input '.*...'
    @ms.input '0 0'
    
    @ms.output.should eq 'Field #1:'
    @ms.output.should eq '*100'
    @ms.output.should eq '2210'
    @ms.output.should eq '1*10'
    @ms.output.should eq '1110'
    @ms.output.should eq ''
    @ms.output.should eq 'Field #2:'
    @ms.output.should eq '**100'
    @ms.output.should eq '33200'
    @ms.output.should eq '1*100'
  end  

end