Module: Hypercuke::StepAdapters

Extended by:
StepAdapters
Included in:
StepAdapters
Defined in:
lib/hypercuke/step_adapters.rb,
lib/hypercuke/step_adapters.rb,
lib/hypercuke/step_adapters.rb,
lib/hypercuke/step_adapters.rb

Overview

One final bit of business before we go: when testing code that defines classes and binds them to constants, it is occasionally useful to reset to a blank slate.

Instance Method Summary collapse

Instance Method Details

#clear ⇒ Object 



120
121
122
123
124
 
# File 'lib/hypercuke/step_adapters.rb', line 120

def clear
  constants.each do |c|
    remove_const c
  end
end

#define(topic_name, layer_name) ⇒ Object

Here’s the entry point for the adapter definition API. It’s entirely possible that a user might want to define their step adapters in a re-entrant way (much like we’ve been reopening the same modules and classes in this file), so this bit of the code will either create a new step adapter, or return one that’s already been defined.



88
89
90
91
 
# File 'lib/hypercuke/step_adapters.rb', line 88

def define(topic_name, layer_name)
  topic_module = define_topic_module(topic_name)
  step_adapter = topic_module.define_step_adapter( layer_name )
end

#define_topic_module(topic_name) ⇒ Object 



99
100
101
102
103
104
 
# File 'lib/hypercuke/step_adapters.rb', line 99

def define_topic_module(topic_name)
  fetch_topic_module(topic_name)
rescue Hypercuke::TopicNotDefinedError
  const_name = MiniInflector.camelize(topic_name)
  const_set const_name, TopicModule.new
end

#fetch_topic_module(topic_name) ⇒ Object

We’ll get to what makes a topic module special is in a moment, but here’s how we fetch one:



32
33
34
35
36
37
38
39
40
41
42
43
 
# File 'lib/hypercuke/step_adapters.rb', line 32

def fetch_topic_module(topic_name)
  # FIXME: cyclomatic complexity
  Hypercuke.topics.validate(topic_name) do
    fail TopicNotDefinedError, "Topic not defined: #{topic_name}"
  end
  validate_topic_module \
    begin
      const_get( MiniInflector.camelize(topic_name) )
    rescue NameError => e
      raise Hypercuke::TopicNotDefinedError.wrap(e)
    end
end