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tag: v2.4.0
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module RSpec
module Core
class ExampleGroup
extend Extensions::ModuleEvalWithArgs
include Extensions::InstanceEvalWithArgs
extend Hooks
extend Subject::ClassMethods
include Subject::InstanceMethods
include Let
include Pending
attr_accessor :example
def running_example
RSpec.deprecate("running_example", "example")
example
end
def self.world
RSpec.world
end
def self.register
RSpec::Core::Runner.autorun
world.register(self)
end
class << self
def self.delegate_to_metadata(*names)
names.each do |name|
define_method name do
metadata[:example_group][name]
end
end
end
delegate_to_metadata :description, :describes, :file_path
alias_method :display_name, :description
alias_method :described_class, :describes
end
def self.define_example_method(name, extra_options={})
module_eval(<<-END_RUBY, __FILE__, __LINE__)
def self.#{name}(desc=nil, options={}, &block)
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_example_method :example
class << self
alias_method :alias_example_to, :define_example_method
end
alias_example_to :it
alias_example_to :specify
alias_example_to :focused, :focused => true
alias_example_to :pending, :pending => true
alias_example_to :xit, :pending => true
def self.define_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
define_shared_group_method :it_should_behave_like
class << self
alias_method :alias_it_should_behave_like_to, :define_shared_group_method
end
alias_it_should_behave_like_to :it_behaves_like, "behaves like"
def self.examples
@examples ||= []
end
def self.filtered_examples
world.filtered_examples[self]
end
def self.descendant_filtered_examples
@descendant_filtered_examples ||= filtered_examples + children.inject([]){|l,c| l + c.descendant_filtered_examples}
end
def self.metadata
@metadata if defined?(@metadata)
end
def self.superclass_metadata
@superclass_metadata ||= self.superclass.respond_to?(:metadata) ? self.superclass.metadata : nil
end
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
class << self
alias_method :context, :describe
end
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
def self.children
@children ||= []
end
def self.descendants
@_descendants ||= [self] + children.inject([]) {|list, c| list + c.descendants}
end
def self.ancestors
@_ancestors ||= super().select {|a| a < RSpec::Core::ExampleGroup}
end
def self.top_level?
@top_level ||= superclass == ExampleGroup
end
def self.set_it_up(*args)
@metadata = RSpec::Core::Metadata.new(superclass_metadata).process(*args)
world.configure_group(self)
end
def self.before_all_ivars
@before_all_ivars ||= {}
end
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
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
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) if top_level?
run_hook!(:before, :all, example_group_instance)
store_before_all_ivars(example_group_instance)
end
def self.eval_around_eachs(example, initial_procsy)
example.around_hooks.reverse.inject(initial_procsy) do |procsy, around_hook|
Example::Procsy.new(procsy.metadata) do
example.example_group_instance.instance_eval_with_args(procsy, &around_hook)
end
end
end
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
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
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) if top_level?
end
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
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)
reporter.example_group_finished(self)
end
end
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
end
def self.fail_fast?
RSpec.configuration.fail_fast?
end
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
def self.apply?(predicate, filters)
metadata.apply?(predicate, filters)
end
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
def self.top_level_description
ancestors.last.description
end
def self.set_ivars(instance, ivars)
ivars.each {|name, value| instance.instance_variable_set(name, value)}
end
def described_class
self.class.described_class
end
def instance_eval_with_rescue(&hook)
begin
instance_eval(&hook)
rescue Exception => e
raise unless example
example.set_exception(e)
end
end
end
end
end
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