Class: RSpec::Core::ExampleGroup

Inherits:
Object
  • Object
show all
Extended by:
RSpec::Core::Extensions::ModuleEvalWithArgs, Hooks, MetadataHashBuilder::WithDeprecationWarning, Subject::ClassMethods
Includes:
RSpec::Core::Extensions::InstanceEvalWithArgs, Let, Pending, Subject::InstanceMethods
Defined in:
lib/rspec/core/example_group.rb

Constant Summary

Constants included from Pending

Pending::DEFAULT_MESSAGE

Instance Attribute Summary collapse

Attributes included from Subject::ClassMethods

#explicit_subject_block

Class Method Summary collapse

Instance Method Summary collapse

Methods included from MetadataHashBuilder::Common

#build_metadata_hash_from

Methods included from RSpec::Core::Extensions::ModuleEvalWithArgs

module_eval_with_args

Methods included from RSpec::Core::Extensions::InstanceEvalWithArgs

#instance_eval_with_args

Methods included from Subject::ClassMethods

its, subject

Methods included from Hooks

after, around, before, find_hook, hooks, run_hook, run_hook!, run_hook_filtered

Methods included from Let

included

Methods included from Pending

#pending

Methods included from Subject::InstanceMethods

#subject

Instance Attribute Details

#example ⇒ Object

Returns the value of attribute example.



14
15
16
 
# File 'lib/rspec/core/example_group.rb', line 14

def example
  @example
end

Class Method Details

.ancestors ⇒ Object 



154
155
156
 
# File 'lib/rspec/core/example_group.rb', line 154

def self.ancestors
  @_ancestors ||= super().select {|a| a < RSpec::Core::ExampleGroup}
end

.apply?(predicate, filters) ⇒ Boolean

Returns:

  • (Boolean) 


300
301
302
 
# File 'lib/rspec/core/example_group.rb', line 300

def self.apply?(predicate, filters)
  metadata.apply?(predicate, filters)
end

.around_hooks_for(example) ⇒ Object 



249
250
251
 
# File 'lib/rspec/core/example_group.rb', line 249

def self.around_hooks_for(example)
  world.find_hook(:around, :each, self, example) + ancestors.reverse.inject([]){|l,a| l + a.find_hook(:around, :each, self, example)}
end

.assign_before_all_ivars(ivars, example_group_instance) ⇒ Object 



198
199
200
201
 
# File 'lib/rspec/core/example_group.rb', line 198

def self.assign_before_all_ivars(ivars, example_group_instance)
  return if ivars.empty?
  ivars.each { |ivar, val| example_group_instance.instance_variable_set(ivar, val) }
end

.before_all_ivars ⇒ Object 



187
188
189
 
# File 'lib/rspec/core/example_group.rb', line 187

def self.before_all_ivars
  @before_all_ivars ||= {}
end

.children ⇒ Object 



146
147
148
 
# File 'lib/rspec/core/example_group.rb', line 146

def self.children
  @children ||= []
end

.declaration_line_numbers ⇒ Object 



304
305
306
307
308
 
# File 'lib/rspec/core/example_group.rb', line 304

def self.declaration_line_numbers
  @declaration_line_numbers ||= [metadata[:example_group][:line_number]] +
    examples.collect {|e| e.metadata[:line_number]} +
    children.inject([]) {|l,c| l + c.declaration_line_numbers}
end

.define_example_method(name, extra_options = {}) ⇒ Object Also known as: alias_example_to 



43
44
45
46
47
48
49
50
51
52
53
 
# File 'lib/rspec/core/example_group.rb', line 43

def self.define_example_method(name, extra_options={})
  module_eval(<<-END_RUBY, __FILE__, __LINE__)
    def self.#{name}(desc=nil, *args, &block)
      options = build_metadata_hash_from(args)
      options.update(:pending => true) unless block
      options.update(#{extra_options.inspect})
      examples << RSpec::Core::Example.new(self, desc, options, block)
      examples.last
    end
  END_RUBY
end

.define_nested_shared_group_method(new_name, report_label = nil) ⇒ Object Also known as: alias_it_should_behave_like_to 



68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
 
# File 'lib/rspec/core/example_group.rb', line 68

def self.define_nested_shared_group_method(new_name, report_label=nil)
  module_eval(<<-END_RUBY, __FILE__, __LINE__)
    def self.#{new_name}(name, *args, &customization_block)
      shared_block = world.shared_example_groups[name]
      raise "Could not find shared example group named \#{name.inspect}" unless shared_block

      group = describe("#{report_label || "it should behave like"} \#{name}") do
        module_eval_with_args(*args, &shared_block)
        module_eval(&customization_block) if customization_block
      end
      group.metadata[:shared_group_name] = name
      group
    end
  END_RUBY
end

.delegate_to_metadata(*names) ⇒ Object 



30
31
32
33
34
35
36
 
# File 'lib/rspec/core/example_group.rb', line 30

def self.delegate_to_metadata(*names)
  names.each do |name|
    define_method name do
      metadata[:example_group][name]
    end
  end
end

.descendant_filtered_examples ⇒ Object 



108
109
110
 
# File 'lib/rspec/core/example_group.rb', line 108

def self.descendant_filtered_examples
  @descendant_filtered_examples ||= filtered_examples + children.inject([]){|l,c| l + c.descendant_filtered_examples}
end

.descendants ⇒ Object 



150
151
152
 
# File 'lib/rspec/core/example_group.rb', line 150

def self.descendants
  @_descendants ||= [self] + children.inject([]) {|list, c| list + c.descendants}
end

.describe(*args, &example_group_block) ⇒ Object Also known as: context 



120
121
122
123
124
125
126
127
128
129
130
131
132
133
 
# File 'lib/rspec/core/example_group.rb', line 120

def self.describe(*args, &example_group_block)
  @_subclass_count ||= 0
  @_subclass_count += 1
  args << {} unless args.last.is_a?(Hash)
  args.last.update(:example_group_block => example_group_block)

  # TODO 2010-05-05: Because we don't know if const_set is thread-safe
  child = const_set(
    "Nested_#{@_subclass_count}",
    subclass(self, args, &example_group_block)
  )
  children << child
  child
end

.ensure_example_groups_are_configured ⇒ Object 



162
163
164
165
166
167
168
 
# File 'lib/rspec/core/example_group.rb', line 162

def self.ensure_example_groups_are_configured
  unless defined?(@@example_groups_configured)
    RSpec.configuration.configure_mock_framework
    RSpec.configuration.configure_expectation_framework
    @@example_groups_configured = true
  end
end

.eval_after_alls(example_group_instance) ⇒ Object 



229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
 
# File 'lib/rspec/core/example_group.rb', line 229

def self.eval_after_alls(example_group_instance)
  return if descendant_filtered_examples.empty?
  assign_before_all_ivars(before_all_ivars, example_group_instance)

  begin
    run_hook!(:after, :all, example_group_instance)
  rescue => e
    # TODO: come up with a better solution for this.
    RSpec.configuration.reporter.message <<-EOS

An error occurred in an after(:all) hook.
  #{e.class}: #{e.message}
  occurred at #{e.backtrace.first}

  EOS
  end

  world.run_hook_filtered(:after, :all, self, example_group_instance)
end

.eval_after_eachs(example) ⇒ Object 



224
225
226
227
 
# File 'lib/rspec/core/example_group.rb', line 224

def self.eval_after_eachs(example)
  ancestors.each { |ancestor| ancestor.run_hook(:after, :each, example.example_group_instance) }
  world.run_hook_filtered(:after, :each, self, example.example_group_instance, example)
end

.eval_around_eachs(example, initial_procsy) ⇒ Object 



211
212
213
214
215
216
217
 
# File 'lib/rspec/core/example_group.rb', line 211

def self.eval_around_eachs(example, initial_procsy)
  example.around_hooks.reverse.inject(initial_procsy) do |procsy, around_hook|
    Example.procsy(procsy.metadata) do
      example.example_group_instance.instance_eval_with_args(procsy, &around_hook)
    end
  end
end

.eval_before_alls(example_group_instance) ⇒ Object 



203
204
205
206
207
208
209
 
# File 'lib/rspec/core/example_group.rb', line 203

def self.eval_before_alls(example_group_instance)
  return if descendant_filtered_examples.empty?
  assign_before_all_ivars(superclass.before_all_ivars, example_group_instance)
  world.run_hook_filtered(:before, :all, self, example_group_instance)
  run_hook!(:before, :all, example_group_instance)
  store_before_all_ivars(example_group_instance)
end

.eval_before_eachs(example) ⇒ Object 



219
220
221
222
 
# File 'lib/rspec/core/example_group.rb', line 219

def self.eval_before_eachs(example)
  world.run_hook_filtered(:before, :each, self, example.example_group_instance, example)
  ancestors.reverse.each { |ancestor| ancestor.run_hook(:before, :each, example.example_group_instance) }
end

.examples ⇒ Object 



100
101
102
 
# File 'lib/rspec/core/example_group.rb', line 100

def self.examples
  @examples ||= []
end

.fail_fast? ⇒ Boolean

Returns:

  • (Boolean) 


285
286
287
 
# File 'lib/rspec/core/example_group.rb', line 285

def self.fail_fast?
  RSpec.configuration.fail_fast?
end

.fail_filtered_examples(exception, reporter) ⇒ Object 



274
275
276
277
278
279
280
281
282
283
 
# File 'lib/rspec/core/example_group.rb', line 274

def self.fail_filtered_examples(exception, reporter)
  filtered_examples.each { |example| example.fail_fast(reporter, exception) }

  children.each do |child|
    reporter.example_group_started(child)
    child.fail_filtered_examples(exception, reporter)
    reporter.example_group_finished(child)
  end
  false
end

.filtered_examples ⇒ Object 



104
105
106
 
# File 'lib/rspec/core/example_group.rb', line 104

def self.filtered_examples
  world.filtered_examples[self]
end

.include_context(name) ⇒ Object Also known as: include_examples 



92
93
94
 
# File 'lib/rspec/core/example_group.rb', line 92

def self.include_context(name)
  module_eval(&world.shared_example_groups[name])
end

.metadata ⇒ Object 



112
113
114
 
# File 'lib/rspec/core/example_group.rb', line 112

def self.metadata
  @metadata if defined?(@metadata)
end

.register ⇒ Object 



25
26
27
 
# File 'lib/rspec/core/example_group.rb', line 25

def self.register
  world.register(self)
end

.run(reporter) ⇒ Object 



253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
 
# File 'lib/rspec/core/example_group.rb', line 253

def self.run(reporter)
  if RSpec.wants_to_quit
    RSpec.clear_remaining_example_groups if top_level?
    return
  end
  reporter.example_group_started(self)

  begin
    eval_before_alls(new)
    result_for_this_group = run_examples(reporter)
    results_for_descendants = children.map {|child| child.run(reporter)}.all?
    result_for_this_group && results_for_descendants
  rescue Exception => ex
    fail_filtered_examples(ex, reporter)
  ensure
    eval_after_alls(new)
    before_all_ivars.clear
    reporter.example_group_finished(self)
  end
end

.run_examples(reporter) ⇒ Object 



289
290
291
292
293
294
295
296
297
298
 
# File 'lib/rspec/core/example_group.rb', line 289

def self.run_examples(reporter)
  filtered_examples.map do |example|
    next if RSpec.wants_to_quit
    instance = new
    set_ivars(instance, before_all_ivars)
    succeeded = example.run(instance, reporter)
    RSpec.wants_to_quit = true if fail_fast? && !succeeded
    succeeded
  end.all?
end

.set_it_up(*args) ⇒ Object 



170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
 
# File 'lib/rspec/core/example_group.rb', line 170

def self.set_it_up(*args)
  # Ruby 1.9 has a bug that can lead to infinite recursion and a
  # SystemStackError if you include a module in a superclass after
  # including it in a subclass: https://gist.github.com/845896
  # To prevent this, we must include any modules in RSpec::Core::ExampleGroup
  # before users create example groups and have a chance to include
  # the same module in a subclass of RSpec::Core::ExampleGroup.
  # So we need to configure example groups here.
  ensure_example_groups_are_configured

  symbol_description = args.shift if args.first.is_a?(Symbol)
  args << build_metadata_hash_from(args)
  args.unshift(symbol_description) if symbol_description
  @metadata = RSpec::Core::Metadata.new(superclass_metadata).process(*args)
  world.configure_group(self)
end

.set_ivars(instance, ivars) ⇒ Object 



314
315
316
 
# File 'lib/rspec/core/example_group.rb', line 314

def self.set_ivars(instance, ivars)
  ivars.each {|name, value| instance.instance_variable_set(name, value)}
end

.store_before_all_ivars(example_group_instance) ⇒ Object 



191
192
193
194
195
196
 
# File 'lib/rspec/core/example_group.rb', line 191

def self.store_before_all_ivars(example_group_instance)
  return if example_group_instance.instance_variables.empty?
  example_group_instance.instance_variables.each { |ivar| 
    before_all_ivars[ivar] = example_group_instance.instance_variable_get(ivar)
  }
end

.subclass(parent, args, &example_group_block) ⇒ Object 



139
140
141
142
143
144
 
# File 'lib/rspec/core/example_group.rb', line 139

def self.subclass(parent, args, &example_group_block)
  subclass = Class.new(parent)
  subclass.set_it_up(*args)
  subclass.module_eval(&example_group_block) if example_group_block
  subclass
end

.superclass_metadata ⇒ Object 



116
117
118
 
# File 'lib/rspec/core/example_group.rb', line 116

def self.superclass_metadata
  @superclass_metadata ||= self.superclass.respond_to?(:metadata) ? self.superclass.metadata : nil
end

.top_level? ⇒ Boolean

Returns:

  • (Boolean) 


158
159
160
 
# File 'lib/rspec/core/example_group.rb', line 158

def self.top_level?
  @top_level ||= superclass == ExampleGroup
end

.top_level_description ⇒ Object 



310
311
312
 
# File 'lib/rspec/core/example_group.rb', line 310

def self.top_level_description
  ancestors.last.description
end

.world ⇒ Object 



21
22
23
 
# File 'lib/rspec/core/example_group.rb', line 21

def self.world
  RSpec.world
end

Instance Method Details

#described_class ⇒ Object 



318
319
320
 
# File 'lib/rspec/core/example_group.rb', line 318

def described_class
  self.class.described_class
end

#instance_eval_with_rescue(&hook) ⇒ Object 



322
323
324
325
326
327
328
329
 
# File 'lib/rspec/core/example_group.rb', line 322

def instance_eval_with_rescue(&hook)
  begin
    instance_eval(&hook)
  rescue Exception => e
    raise unless example
    example.set_exception(e)
  end
end

#running_example ⇒ Object 



16
17
18
19
 
# File 'lib/rspec/core/example_group.rb', line 16

def running_example
  RSpec.deprecate("running_example", "example")
  example
end