Module: Prefactory::Lookups

Defined in:
lib/rspec/core/prefactory.rb

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.included(base) ⇒ Object 



38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
 
# File 'lib/rspec/core/prefactory.rb', line 38

def self.included(base)
  PrefactoryLookup.create_table

  base.instance_eval do
    def before_with_detect_before_all(*args, &block)
      before_all_context = (args.first == :all)
      modified_block = proc do
        @before_all_context = before_all_context
        instance_eval(&block)
        @before_all_context = nil
      end
      before_without_detect_before_all(*args, &modified_block)
    end

    class << self
      alias_method :before_without_detect_before_all, :before
      alias_method :before, :before_with_detect_before_all
    end

    def set!(key, *args, &set_block)
      before(:all) do
        modified_block = proc { instance_eval(&set_block) } if set_block
        prefactory_add(key, *args, &modified_block)
      end
    end
  end

  # allow shorthand access to a prefabricated object
  # e.g. with prefactory_add(:active_user), calling the method active_user will return the (memoized) object,
  # by invoking the 'prefactory' method.
  base.class_eval do
    def method_missing(key, *args, &block)
      result = prefactory(key)
      result == Prefactory::NotDefined ? super : result
    end
  end
end

Instance Method Details

#clear_prefactory_memoizations ⇒ Object 



136
137
138
 
# File 'lib/rspec/core/prefactory.rb', line 136

def clear_prefactory_memoizations
  @prefactory_memo = {}
end

#in_before_all? ⇒ Boolean

Returns:

  • (Boolean) 


98
99
100
 
# File 'lib/rspec/core/prefactory.rb', line 98

def in_before_all?
  @before_all_context
end

#prefactory(key) ⇒ Object

instantiate, or access an already-instantiated-and-memoized, prefabricated object.



81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
 
# File 'lib/rspec/core/prefactory.rb', line 81

def prefactory(key)
  @prefactory_memo ||= {}
  @prefactory_memo[key] ||= begin
    lookup = prefactory_lookup(key)
    if lookup.present?
      if lookup[:result_class]
        lookup[:result_class].constantize.find(lookup[:result_id])
      else
        YAML.load(lookup[:result_value])
      end
    else
      Prefactory::NotDefined
    end
  rescue
  end
end

#prefactory_add(key, *args, &block) ⇒ Object

prefabricate an object. Can be passed any block that returns a class accessible by Klass.find(id), or, if no block is passed, invokes create(key, options) to use e.g. a FactoryGirl factory of that key name.



104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
 
# File 'lib/rspec/core/prefactory.rb', line 104

def prefactory_add(key, *args, &block)
  raise "prefactory_add can only be used in a before(:all) context.  Change to a before(:all) or set!, or use let/let! instead." unless in_before_all?
  result = nil
  clear_prefactory_memoizations
  if block
    result = yield
  else
    result = create(key, *args) if respond_to?(:create)
  end
  if result.present?
    if result.respond_to?(:id)
      PrefactoryLookup.where(:key => key).first_or_initialize.tap do |lookup|
        lookup.result_class = result.class.name
        lookup.result_id = result.id
        lookup.result_value = nil
        lookup.save!
      end
    else
      PrefactoryLookup.where(:key => key).first_or_initialize.tap do |lookup|
        lookup.result_class = nil
        lookup.result_id = nil
        lookup.result_value = YAML.dump(result)
        lookup.save!
      end
    end
  else
    warn "WARNING: Failed to add #{key} to prefactory: block result not present"
  end
  clear_prefactory_memoizations
  result
end

#prefactory_lookup(key) ⇒ Object 



76
77
78
 
# File 'lib/rspec/core/prefactory.rb', line 76

def prefactory_lookup(key)
  PrefactoryLookup.where(:key => key).first
end