Class: AssertJson::Json

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

Instance Method Summary collapse

Constructor Details

#initialize(json_string) ⇒ Json

Returns a new instance of Json.



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# File 'lib/assert_json/assert_json.rb', line 25

def initialize(json_string)
  @decoded_json = ActiveSupport::JSON.decode(json_string)
end

Instance Method Details

#element(*args, &block) ⇒ Object Also known as: has 



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# File 'lib/assert_json/assert_json.rb', line 34

def element(*args, &block)
  arg = args.shift
  token = if @decoded_json.is_a?(Array)
            if @index
              @decoded_json[@index]
            else
              @decoded_json.shift
            end
          else
            @decoded_json
          end
  case token
  when Hash
    raise_error("element #{arg} not found") unless token.keys.include?(arg)
    unless args.empty?
      second_arg = args.shift
      case second_arg
      when Regexp
        raise_error("element #{token[arg].inspect} does not match #{second_arg.inspect}") if second_arg !~ token[arg]
      else
        raise_error("element #{token[arg].inspect} does not match #{second_arg.inspect}") if second_arg != token[arg]
      end
    end
  when Array
    raise_error("element #{arg} not found") if token != arg
  when String
    case arg
    when Regexp
      raise_error("element #{arg.inspect} not found") if token !~ arg
    else
      raise_error("element #{arg.inspect} not found") if token != arg
    end
  when NilClass
    raise_error("no element left")
  else
    flunk
  end

  if block_given?
    begin
      in_scope, @decoded_json = @decoded_json, token.is_a?(Hash) ? token[arg] : token
      yield
    ensure
      @decoded_json = in_scope
    end
  end

end

#item(index, &block) ⇒ Object 



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# File 'lib/assert_json/assert_json.rb', line 29

def item(index, &block)
  @index = index
  yield if block_given?
end

#not_element(*args, &block) ⇒ Object Also known as: has_not 



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# File 'lib/assert_json/assert_json.rb', line 84

def not_element(*args, &block)
  arg = args.shift
  token = @decoded_json
  case token
  when Array
    raise_error("element #{arg} found, but not expected") if token.include?(arg)
  else
    raise_error("element #{arg} found, but not expected") if token.keys.include?(arg)
  end
end