Support version 3 examinations

.ruby-version

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+3.1.0

README.md

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 # Ruby Association Certified Ruby Programmer Examination
 
-Sample questions for [Ruby Association Certified Ruby Programmer Examination](https://www.ruby.or.jp/en/certification/examination/)
+Sample questions for [Ruby Association Certified Ruby Programmer Examination version 3](https://www.ruby.or.jp/en/certification/examination/)
 
-* [Sample Questions for Silver](silver.md)
-* [Sample Questions for Gold](gold.md)
+* [Sample Questions for Silver](silver.md) ([Japanese](silver_ja.md))
+* [Sample Questions for Gold](gold.md) ([Japanese](gold_ja.md))

check_gold.rb

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+require "open3"
+require "rbconfig"
+
+$questions = File.read("gold.md").split(/^-------------.*\n/)
+$answers = File.read("gold_answers.md").split(/^-------------.*\n/)
+
+$ruby = File.join(RbConfig::CONFIG["bindir"], RbConfig::CONFIG["ruby_install_name"])
+
+def check(n)
+  question = $questions[n - 1]
+  answer = $answers[n - 1]
+  case question
+  when /Assume that the following code must have the stated execution result|Which code produces the following execution result\?/
+    s = question.slice(/^```\n(.*?)^```\n/m, 1)
+    code, output = s.split(/\n?\[Execution Result\]\n+/)
+    options = question.scan(/^\*[A-Z]:\* `(.*)`/).flatten(1)
+    if options.empty?
+      options = question.scan(/^\*[A-Z]:\*.*\n((?:(?!\*[A-Z]:\*).*\n)*)/).flatten(1).map { |i|
+        i.slice(/^```\n(.*)^```\n/m, 1) || i
+      }
+    end
+    xs = answer.slice(/^\*\*A\d+:.*/).scan(/\(([A-Z])\)/).flatten(1).map { |i|
+      i.ord - ?A.ord
+    }
+    if question.match?(/Which of the following options CANNOT be inserted into/)
+      xs = (0 .. options.size - 1).to_a - xs
+    end
+    ys = options.each_with_index.filter_map { |option, i|
+      c = code.strip.empty? ? option : c = code.gsub(/__\(1\)__/, option)
+      o, = Open3.capture2e($ruby, stdin_data: c)
+      if $VERBOSE
+        p [i, o, output]
+      end
+      o == output ? i : nil
+    }
+    result = xs == ys ? "OK" : "NG"
+    puts "Q#{n}: #{result}"
+  when /Which option corresponds to the execution result\?/
+    code = question.slice(/^```\n(.*?)^```\n/m, 1)
+    options = question.scan(/^(?:- )?\*[A-Z]:\* (.+)/).flatten(1).map { |i|
+      i.slice(/`(.*)`/, 1) || i
+    }
+    if options.empty?
+      options = question.scan(/^\*[A-Z]:\*.*\n((?:(?!\*[A-Z]:\*).*\n)*)/).flatten(1).map { |i|
+        i.slice(/^```\n(.*)^```\n/m, 1) || i
+      }
+    end
+    output, = Open3.capture2e($ruby, stdin_data: code)
+    if $VERBOSE
+      p [output, options]
+    end
+    xs = answer.slice(/^\*\*A\d+:.*/).scan(/\(([A-Z])\)/).flatten(1).map { |i|
+      i.ord - ?A.ord
+    }
+    ys = options.each_with_index.filter_map { |option, i|
+      case option
+      when /no output/i
+        output.strip.empty?
+      when /a syntax error/i
+        output.match?(/syntax error/)
+      when /an exception is raised|an error occurs/i
+        output.match?(/\(.*Error\)/)
+      else
+        output.strip == option.strip
+      end ? i : nil
+    }
+    result = xs == ys ? "OK" : "NG"
+    puts "Q#{n}: #{result}"
+  else
+    puts "Q#{n}: ?"
+  end
+end
+
+if ARGV[0]
+  check(ARGV[0].to_i)
+else
+  (1..50).each do |i|
+    check(i)
+  end
+end

check_silver.rb

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+require "open3"
+require "rbconfig"
+
+$questions = File.read("silver.md").split(/^-------------.*\n/)
+$answers = File.read("silver_answers.md").split(/^-------------.*\n/)
+
+$ruby = File.join(RbConfig::CONFIG["bindir"], RbConfig::CONFIG["ruby_install_name"])
+
+def check(n)
+  question = $questions[n - 1]
+  answer = $answers[n - 1]
+  case question
+  when /Which of the following can be inserted into/
+    s = question.slice(/^```\n(.*?)^```\n/m, 1)
+    code, output = s.split(/\n\[Output\]\n/)
+    options = question.scan(/^- \([a-z]\) `(.*)`/).flatten(1)
+    xs = answer.slice(/^\*\*A\d+:.*/).scan(/\(([a-z])\)/).flatten(1).map { |i|
+      i.ord - ?a.ord
+    }
+    ys = options.each_with_index.filter_map { |option, i|
+      c = code.gsub(/__\(1\)__/, option)
+      o, = Open3.capture2e($ruby, stdin_data: c)
+      if $VERBOSE
+        p [i, o, output]
+      end
+      o == output ? i : nil
+    }
+    result = xs == ys ? "OK" : "NG"
+    puts "Q#{n}: #{result}"
+  when /Given the following:/
+    code = question.slice(/^```\n(.*?)^```\n/m, 1)
+    options = question.scan(/^- \([a-z]\) (.*)/).flatten(1).map { |i|
+      i.slice(/`(.*)`/, 1) || i
+    }
+    if options.empty?
+      options = question.scan(/^\*\([a-z]\).*\n((?:(?!\*\([a-z]\)).*\n)*)/).flatten(1).map { |i|
+        i.slice(/^```\n(.*)^```\n/m, 1) || i
+      }
+    end
+    output, = Open3.capture2e($ruby, stdin_data: code)
+    if $VERBOSE
+      p output
+    end
+    xs = answer.slice(/^\*\*A\d+:.*/).scan(/\(([a-z])\)/).flatten(1).map { |i|
+      i.ord - ?a.ord
+    }
+    ys = options.each_with_index.filter_map { |option, i|
+      case option
+      when /no output/i
+        output.strip.empty?
+      when /a syntax error/i
+        output.match?(/syntax error/)
+      when /an exception is raised|an error occurs/i
+        output.match?(/\(.*Error\)/)
+      else
+        output.strip == option.strip
+      end ? i : nil
+    }
+    result = xs == ys ? "OK" : "NG"
+    puts "Q#{n}: #{result}"
+  else
+    puts "Q#{n}: ?"
+  end
+end
+
+if ARGV[0]
+  check(ARGV[0].to_i)
+else
+  (1..50).each do |i|
+    check(i)
+  end
+end