Top Level Namespace

Includes:
Speccify::Extension

Defined Under Namespace

Modules: Kernel, Speccify Classes: Object

Instance Method Summary collapse

Methods included from Speccify::Extension

#def_matcher

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(name, *args, &block) ⇒ Object

be_something

This method_missing acts as a matcher builder method.

If a call to be_xyz() reaches this method_missing (say: obj.should be_xyz), a matcher with the name xyz will be built, whose defining property is that it returns the value of obj.xyz? for matches?.



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# File 'lib/speccify.rb', line 307

def method_missing(name, *args, &block)
  if (name.to_s =~ /^be_(.+)/)
    Speccify::Functions::build_matcher(name, args) do |given, matcher, args|
      given.send(($1 + "?").to_sym)
    end
  else
    raise NoMethodError.new(name.to_s)
  end
end

Instance Method Details

#change(&block) ⇒ Object

  • lambda += 2.should change var.from(1).to(3) if var = 1



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# File 'lib/speccify.rb', line 281

def change(&block)
  Speccify::Functions::build_matcher(:change, []) do |given, matcher, args|
    before = block.call
    given.call
    after = block.call
    comparison = after != before
    if list = matcher.msgs
      comparison = case list[0].name
        # todo provide meaningful messages
      when :by          then (after == before + list[0].args[0] || after == before - list[0].args[0])
      when :by_at_least then (after >= before + list[0].args[0] || after <= before - list[0].args[0])
      when :by_at_most  then (after <= before + list[0].args[0] && after >= before - list[0].args[0])
      when :from        then (before == list[0].args[0]) && (after == list[1].args[0])
      end
    end
    matcher.positive_msg = "given block didn't alter the block attached to change, #{matcher.loc}"
    matcher.negative_msg = "given block did alter the block attached to change, #{matcher.loc}"
    comparison
  end
end