WIP: Rewrite from scratch the pretty printer.

lib/minesweeper/console/prettyprinter/header_printer.rb

@@ -0,0 +1,17 @@
+module Minesweeper
+  module Console
+    module PrettyPrinter
+      class HeaderPrinter
+        def initialize(separator)
+          raise StandardError if separator.nil?
+        end
+
+        def print(number_of_columns)
+          raise StandardError if number_of_columns == 0
+          raise StandardError if number_of_columns < 0
+        end
+      end
+    end
+  end
+end
+

lib/minesweeper/console/prettyprinter/minefield_pretty_printer.rb

@@ -0,0 +1,17 @@
+require 'minesweeper'
+require_relative 'empty_minefield_error'
+
+module Minesweeper
+  module Console
+    module PrettyPrinter
+      class MinefieldPrettyPrinter
+        def initialize
+        end
+
+        def print
+        end
+      end
+    end
+  end
+end
+

lib/minesweeper/console/prettyprinter/row_printer.rb

@@ -0,0 +1,21 @@
+module Minesweeper
+  module Console
+    module PrettyPrinter
+      class RowPrinter
+        def initialize(separator)
+          raise StandardError if separator.nil?
+          @separator = separator
+        end
+
+        def print(row_number, raw_row)
+          result = row_number.to_s + @separator
+          raw_row.each_char do |c|
+            result << c + @separator
+          end
+          result
+        end
+      end
+    end
+  end
+end
+

test/minesweeper/console/prettyprinter/header_printer_test.rb

@@ -0,0 +1,27 @@
+require  'minesweeper/console/prettyprinter/header_printer'
+require_relative '../../../test_helper'
+
+module Minesweeper
+  module Console
+    module PrettyPrinter
+      class HeaderPrinterTest < Test::Unit::TestCase
+        SEP = '§'
+
+        def test_raises_error_when_initialized_with_nil_separator
+          assert_raise(StandardError) { HeaderPrinter.new(nil) }
+        end
+
+        def test_raises_error_when_number_of_columns_is_zero
+          printer = HeaderPrinter.new(SEP)
+          assert_raise(StandardError) { printer.print(0) }
+        end
+
+        def test_raises_error_when_number_of_columns_is_negative
+          printer = HeaderPrinter.new(SEP)
+          assert_raise(StandardError) { printer.print(-1) }
+        end
+      end
+    end
+  end
+end
+

test/minesweeper/console/prettyprinter/minefield_pretty_printer_test.rb

@@ -0,0 +1,14 @@
+require 'minesweeper/console/prettyprinter/minefield_pretty_printer'
+require 'minesweeper/console/prettyprinter/empty_minefield_error'
+require_relative '../../../test_helper'
+require_relative 'empty_minefield'
+
+module Minesweeper
+  module Console
+    module PrettyPrinter
+      class MinefieldPrettyPrinterTest < Test::Unit::TestCase
+      end
+    end
+  end
+end
+

test/minesweeper/console/prettyprinter/row_printer_test.rb

@@ -0,0 +1,37 @@
+require 'minesweeper/console/prettyprinter/row_printer'
+require_relative '../../../test_helper'
+
+module Minesweeper
+  module Console
+    module PrettyPrinter
+      class RowPrinterTest < Test::Unit::TestCase
+        SEP = '§'
+
+        def setup
+          @printer = RowPrinter.new(SEP)
+        end
+
+        def test_raise_error_when_initialized_with_a_nil_separator
+          assert_raise(StandardError) { RowPrinter.new(nil) }
+        end
+
+        def test_prints_row_number_first
+          assert_match(/^0.*$/, @printer.print(0, 'HHHH'))
+        end
+
+        def test_prints_separator_after_row_number
+          assert_match(/^\d+#{SEP}.*$/, @printer.print(0, 'HHHH'))
+        end
+
+        def test_prints_each_character_of_the_sequence_separated_by_separator
+          assert_match(/^\d+#{SEP}X#{SEP}Y#{SEP}Z.*$/, @printer.print(0, 'XYZ'))
+        end
+
+        def test_appends_separator
+          assert_match(/^.*#{SEP}$/, @printer.print(0, 'XYZ'))
+        end
+      end
+    end
+  end
+end
+