Class: Shoulda::Context

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

Overview

:nodoc:

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(name, parent, &blk) ⇒ Context

Returns a new instance of Context.



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# File 'lib/shoulda/context.rb', line 291

def initialize(name, parent, &blk)
  Shoulda.add_context(self)
  self.name               = name
  self.parent             = parent
  self.setup_blocks       = []
  self.teardown_blocks    = []
  self.shoulds            = []
  self.should_eventuallys = []
  self.subcontexts        = []

  merge_block(&blk)
  Shoulda.remove_context
end

Dynamic Method Handling

This class handles dynamic methods through the method_missing method

#method_missing(method, *args, &blk) ⇒ Object 



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# File 'lib/shoulda/context.rb', line 428

def method_missing(method, *args, &blk)
  test_unit_class.send(method, *args, &blk)
end

Instance Attribute Details

#name ⇒ Object

my name



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# File 'lib/shoulda/context.rb', line 282

def name
  @name
end

#parent ⇒ Object

may be another context, or the original test::unit class.



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# File 'lib/shoulda/context.rb', line 283

def parent
  @parent
end

#setup_blocks ⇒ Object

blocks given via setup methods



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# File 'lib/shoulda/context.rb', line 285

def setup_blocks
  @setup_blocks
end

#should_eventuallys ⇒ Object

array of hashes representing the should eventually statements



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# File 'lib/shoulda/context.rb', line 288

def should_eventuallys
  @should_eventuallys
end

#shoulds ⇒ Object

array of hashes representing the should statements



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# File 'lib/shoulda/context.rb', line 287

def shoulds
  @shoulds
end

#subcontexts ⇒ Object

array of contexts nested under myself



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# File 'lib/shoulda/context.rb', line 284

def subcontexts
  @subcontexts
end

#subject_block ⇒ Object

Returns the value of attribute subject_block.



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# File 'lib/shoulda/context.rb', line 289

def subject_block
  @subject_block
end

#teardown_blocks ⇒ Object

blocks given via teardown methods



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# File 'lib/shoulda/context.rb', line 286

def teardown_blocks
  @teardown_blocks
end

Instance Method Details

#am_subcontext? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/shoulda/context.rb', line 360

def am_subcontext?
  parent.is_a?(self.class) # my parent is the same class as myself.
end

#build ⇒ Object 



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# File 'lib/shoulda/context.rb', line 418

def build
  shoulds.each do |should|
    create_test_from_should_hash(should)
  end

  subcontexts.each { |context| context.build }

  print_should_eventuallys
end

#context(name, &blk) ⇒ Object 



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# File 'lib/shoulda/context.rb', line 309

def context(name, &blk)
  self.subcontexts << Context.new(name, self, &blk)
end

#create_test_from_should_hash(should) ⇒ Object 



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# File 'lib/shoulda/context.rb', line 368

def create_test_from_should_hash(should)
  test_name = ["test:", full_name, "should", "#{should[:name]}. "].flatten.join(' ').to_sym

  if test_unit_class.instance_methods.include?(test_name.to_s)
    warn "  * WARNING: '#{test_name}' is already defined"
  end

  context = self
  test_unit_class.send(:define_method, test_name) do
    @shoulda_context = context
    begin
      context.run_parent_setup_blocks(self)
      should[:before].bind(self).call if should[:before]
      context.run_current_setup_blocks(self)
      should[:block].bind(self).call
    ensure
      context.run_all_teardown_blocks(self)
    end
  end
end

#full_name ⇒ Object 



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# File 'lib/shoulda/context.rb', line 355

def full_name
  parent_name = parent.full_name if am_subcontext?
  return [parent_name, name].join(" ").strip
end

#merge_block(&blk) ⇒ Object 



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# File 'lib/shoulda/context.rb', line 305

def merge_block(&blk)
  blk.bind(self).call
end

#print_should_eventuallys ⇒ Object 



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# File 'lib/shoulda/context.rb', line 411

def print_should_eventuallys
  should_eventuallys.each do |should|
    test_name = [full_name, "should", "#{should[:name]}. "].flatten.join(' ')
    puts "  * DEFERRED: " + test_name
  end
end

#run_all_setup_blocks(binding) ⇒ Object 



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# File 'lib/shoulda/context.rb', line 389

def run_all_setup_blocks(binding)
  run_parent_setup_blocks(binding)
  run_current_setup_blocks(binding)
end

#run_all_teardown_blocks(binding) ⇒ Object 



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# File 'lib/shoulda/context.rb', line 404

def run_all_teardown_blocks(binding)
  teardown_blocks.reverse.each do |teardown_block|
    teardown_block.bind(binding).call
  end
  self.parent.run_all_teardown_blocks(binding) if am_subcontext?
end

#run_current_setup_blocks(binding) ⇒ Object 



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# File 'lib/shoulda/context.rb', line 398

def run_current_setup_blocks(binding)
  setup_blocks.each do |setup_block|
    setup_block.bind(binding).call
  end
end

#run_parent_setup_blocks(binding) ⇒ Object 



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# File 'lib/shoulda/context.rb', line 394

def run_parent_setup_blocks(binding)
  self.parent.run_all_setup_blocks(binding) if am_subcontext?
end

#setup(&blk) ⇒ Object 



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# File 'lib/shoulda/context.rb', line 313

def setup(&blk)
  self.setup_blocks << blk
end

#should(name_or_matcher, options = {}, &blk) ⇒ Object 



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# File 'lib/shoulda/context.rb', line 321

def should(name_or_matcher, options = {}, &blk)
  if name_or_matcher.respond_to?(:description) && name_or_matcher.respond_to?(:matches?)
    name = name_or_matcher.description
    blk = lambda { assert_accepts name_or_matcher, subject }
  else
    name = name_or_matcher
  end

  if blk
    self.shoulds << { :name => name, :before => options[:before], :block => blk }
  else
   self.should_eventuallys << { :name => name }
 end
end

#should_eventually(name, &blk) ⇒ Object 



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# File 'lib/shoulda/context.rb', line 342

def should_eventually(name, &blk)
  self.should_eventuallys << { :name => name, :block => blk }
end

#should_not(matcher) ⇒ Object 



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# File 'lib/shoulda/context.rb', line 336

def should_not(matcher)
  name = matcher.description
  blk = lambda { assert_rejects matcher, subject }
  self.shoulds << { :name => "not #{name}", :block => blk }
end

#subject(&block) ⇒ Object 



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# File 'lib/shoulda/context.rb', line 346

def subject(&block)
  self.subject_block = block
end

#teardown(&blk) ⇒ Object 



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# File 'lib/shoulda/context.rb', line 317

def teardown(&blk)
  self.teardown_blocks << blk
end

#test_unit_class ⇒ Object 



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# File 'lib/shoulda/context.rb', line 364

def test_unit_class
  am_subcontext? ? parent.test_unit_class : parent
end