Class: TestableExamples::Runner

Inherits:
Object
  • Object
show all
Defined in:
lib/testable_examples/runner.rb

Instance Method Summary collapse

Constructor Details

#initialize(opts) ⇒ Runner

Returns a new instance of Runner.



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# File 'lib/testable_examples/runner.rb', line 3

def initialize(opts)
  @base = opts[:dir] || Dir.pwd
  @name = opts[:task_name] || "test_examples"
  @include_path = opts.key?(:include_path) ? opts[:include_path] : "lib"
  @requires = opts.key?(:requires) ? opts[:requires] : opts[:requires]
end

Instance Method Details

#install ⇒ Object 



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# File 'lib/testable_examples/runner.rb', line 10

def install
  desc "Test your rdoc examples"
  task @name do
    run_examples
  end
end

#run_examples ⇒ Object 



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# File 'lib/testable_examples/runner.rb', line 17

def run_examples
  $: << @include_path if @include_path
  Array(@requires).each {|r| require r} if @requires
  in_example = false
  examples = []
  STDOUT.sync = true
  current_example = ''
  matchers = []
  rb_files = File.exist?(@base) ? [@base] : Dir[File.join(@base, 'lib/**/*.rb')]
  puts "Scanning #{rb_files * ', '}"
  rb_files.each do |file|
    lines = File.read(file).split(/\n/)
    lines.each do |line|
      if line[/^\s*#(.*)/] # comment
        line = $1.strip
        case line
        when /^example:/i then in_example = true
        when /^(?:# )?=+> (.*)/
          if in_example
            expected = $1.strip
            matchers << Matcher.new(expected)
            if matchers.last.match_exception?
              current_example << " rescue e = $!; nil"
            end
            current_example << "\nmatchers[#{matchers.size - 1}].match(__example_runner, $!)"
          end
        when ''
          unless current_example.empty?
            examples << current_example
            current_example = ''
          end
          in_example = false
        else
          current_example << "\n__example_runner = (" << line << ")" if in_example
        end
      else
        unless current_example.empty?
          examples << current_example
          current_example = ''
        end
        in_example = false
      end
    end
  end
  print "Running #{examples.size} example#{'s' if examples.size != 1} "
  examples.each do |example|
    print "."
    eval(example)
  end
  puts " ✔"
  
end