forked from rspec/rspec-core
/
configuration.rb
711 lines (625 loc) · 22.5 KB
/
configuration.rb
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require "rbconfig"
require 'fileutils'
module RSpec
module Core
class Configuration
include RSpec::Core::Hooks
class MustBeConfiguredBeforeExampleGroupsError < StandardError; end
def self.define_predicate_for(*names)
names.each {|name| alias_method "#{name}?", name}
end
# @api private
#
# Used internally to have higher priority exclusion filters
def self.reconcile_opposing_filters(local, authoritative, filter, opposite_filter)
if local[filter] && authoritative[opposite_filter]
local[filter].each_pair do |key, value|
if authoritative[opposite_filter][key] == value
local[filter].delete(key)
end
end
end
end
# @api private
#
# Invoked by the `add_setting` instance method. Use that method on a
# `Configuration` instance rather than this class method.
def self.add_setting(name, opts={})
raise "Use the instance add_setting method if you want to set a default" if opts.has_key?(:default)
if opts[:alias]
RSpec.warn_deprecation <<-MESSAGE
The :alias option to add_setting is deprecated. Use :alias_with on the original setting instead.
Called from #{caller(0)[4]}
MESSAGE
alias_method name, opts[:alias]
alias_method "#{name}=", "#{opts[:alias]}="
define_predicate_for name
else
attr_accessor name
define_predicate_for name
end
if opts[:alias_with]
[opts[:alias_with]].flatten.each do |alias_name|
alias_method alias_name, name
alias_method "#{alias_name}=", "#{name}="
define_predicate_for alias_name
end
end
end
add_setting :error_stream
add_setting :output_stream, :alias_with => [:output, :out]
add_setting :drb
add_setting :drb_port
add_setting :profile_examples
add_setting :fail_fast
add_setting :failure_exit_code
add_setting :run_all_when_everything_filtered
add_setting :pattern, :alias_with => :filename_pattern
add_setting :files_to_run
add_setting :include_or_extend_modules
add_setting :backtrace_clean_patterns
add_setting :tty
add_setting :treat_symbols_as_metadata_keys_with_true_values
add_setting :expecting_with_rspec
add_setting :default_path
add_setting :show_failures_in_pending_blocks
add_setting :order
DEFAULT_EXCLUSION_FILTERS = {
:if => lambda { |value, metadata| metadata.has_key?(:if) && !value },
:unless => lambda { |value| value }
}
DEFAULT_BACKTRACE_PATTERNS = [
/\/lib\d*\/ruby\//,
/org\/jruby\//,
/bin\//,
/gems/,
/spec\/spec_helper\.rb/,
/lib\/rspec\/(core|expectations|matchers|mocks)/
]
def initialize
@expectation_frameworks = []
@include_or_extend_modules = []
@mock_framework = nil
@files_to_run = []
@formatters = []
@color = false
@pattern = '**/*_spec.rb'
@failure_exit_code = 1
@backtrace_clean_patterns = DEFAULT_BACKTRACE_PATTERNS.dup
@default_path = 'spec'
@inclusion_filter = {}
@exclusion_filter = DEFAULT_EXCLUSION_FILTERS.dup
@preferred_options = {}
@seed = srand % 0xFFFF
end
def force(hash)
@preferred_options.merge!(hash)
end
def reset
@reporter = nil
@formatters.clear
end
# @overload add_setting(name)
# @overload add_setting(name, options_hash)
#
# Adds a custom setting to the RSpec.configuration object.
#
# RSpec.configuration.add_setting :foo
#
# Used internally and by extension frameworks like rspec-rails, so they
# can add config settings that are domain specific. For example:
#
# RSpec.configure do |c|
# c.add_setting :use_transactional_fixtures,
# :default => true,
# :alias_with => :use_transactional_examples
# end
#
# `add_setting` creates three methods on the configuration object, a
# setter, a getter, and a predicate:
#
# RSpec.configuration.foo=(value)
# RSpec.configuration.foo
# RSpec.configuration.foo? # returns true if foo returns anything but nil or false
#
# ### Options
#
# `add_setting` takes an optional hash that supports the keys `:default`
# and `:alias_with`.
#
# Use `:default` to set a default value for the generated getter and
# predicate methods:
#
# add_setting(:foo, :default => "default value")
#
# Use `:alias_with` to alias the setter, getter, and predicate to another
# name, or names:
#
# add_setting(:foo, :alias_with => :bar)
# add_setting(:foo, :alias_with => [:bar, :baz])
#
def add_setting(name, opts={})
default = opts.delete(:default)
(class << self; self; end).class_eval do
add_setting(name, opts)
end
send("#{name}=", default) if default
end
# Used by formatters to ask whether a backtrace line should be displayed
# or not, based on the line matching any `backtrace_clean_patterns`.
def cleaned_from_backtrace?(line)
backtrace_clean_patterns.any? { |regex| line =~ regex }
end
# Returns the configured mock framework adapter module
def mock_framework
mock_with :rspec unless @mock_framework
@mock_framework
end
# Delegates to mock_framework=(framework)
def mock_framework=(framework)
mock_with framework
end
# Sets the mock framework adapter module.
#
# `framework` can be a Symbol or a Module.
#
# Given any of :rspec, :mocha, :flexmock, or :rr, configures the named
# framework.
#
# Given :nothing, configures no framework. Use this if you don't use any
# mocking framework to save a little bit of overhead.
#
# Given a Module, includes that module in every example group. The module
# should adhere to RSpec's mock framework adapter API:
#
# setup_mocks_for_rspec
# - called before each example
#
# verify_mocks_for_rspec
# - called after each example. Framework should raise an exception
# when expectations fail
#
# teardown_mocks_for_rspec
# - called after verify_mocks_for_rspec (even if there are errors)
def mock_with(framework)
framework_module = case framework
when Module
framework
when String, Symbol
require case framework.to_s
when /rspec/i
'rspec/core/mocking/with_rspec'
when /mocha/i
'rspec/core/mocking/with_mocha'
when /rr/i
'rspec/core/mocking/with_rr'
when /flexmock/i
'rspec/core/mocking/with_flexmock'
else
'rspec/core/mocking/with_absolutely_nothing'
end
RSpec::Core::MockFrameworkAdapter
end
new_name, old_name = [framework_module, @mock_framework].map do |mod|
mod.respond_to?(:framework_name) ? mod.framework_name : :unnamed
end
unless new_name == old_name
assert_no_example_groups_defined(:mock_framework)
end
@mock_framework = framework_module
end
# Returns the configured expectation framework adapter module(s)
def expectation_frameworks
expect_with :rspec if @expectation_frameworks.empty?
@expectation_frameworks
end
# Delegates to expect_with(framework)
def expectation_framework=(framework)
expect_with(framework)
end
# Sets the expectation framework module(s).
#
# `frameworks` can be :rspec, :stdlib, or both
#
# Given :rspec, configures rspec/expectations.
# Given :stdlib, configures test/unit/assertions
# Given both, configures both
def expect_with(*frameworks)
modules = frameworks.map do |framework|
case framework
when :rspec
require 'rspec/expectations'
self.expecting_with_rspec = true
::RSpec::Matchers
when :stdlib
require 'test/unit/assertions'
::Test::Unit::Assertions
else
raise ArgumentError, "#{framework.inspect} is not supported"
end
end
if (modules - @expectation_frameworks).any?
assert_no_example_groups_defined(:expect_with)
end
@expectation_frameworks.clear
@expectation_frameworks.push(*modules)
end
def full_backtrace=(true_or_false)
@backtrace_clean_patterns = true_or_false ? [] : DEFAULT_BACKTRACE_PATTERNS
end
def color
return false unless output_to_tty?
value_for(:color, @color)
end
def color=(bool)
return unless bool
@color = true
if bool && ::RbConfig::CONFIG['host_os'] =~ /mswin|mingw/
unless ENV['ANSICON']
warn "You must use ANSICON 1.31 or later (http://adoxa.110mb.com/ansicon/) to use colour on Windows"
@color = false
end
end
end
# TODO - deprecate color_enabled - probably not until the last 2.x
# release before 3.0
alias_method :color_enabled, :color
alias_method :color_enabled=, :color=
define_predicate_for :color_enabled, :color
def libs=(libs)
libs.map {|lib| $LOAD_PATH.unshift lib}
end
def requires=(paths)
paths.map {|path| require path}
end
def debug=(bool)
return unless bool
begin
require 'ruby-debug'
Debugger.start
rescue LoadError => e
raise <<-EOM
#{'*'*50}
#{e.message}
If you have it installed as a ruby gem, then you need to either require
'rubygems' or configure the RUBYOPT environment variable with the value
'rubygems'.
#{e.backtrace.join("\n")}
#{'*'*50}
EOM
end
end
# Run examples defined on `line_numbers` in all files to run.
def line_numbers=(line_numbers)
filter_run :line_numbers => line_numbers.map{|l| l.to_i}
end
def full_description=(description)
filter_run :full_description => /#{description}/
end
# @overload add_formatter(formatter)
#
# Adds a formatter to the formatters collection. `formatter` can be a
# string representing any of the built-in formatters (see
# `built_in_formatter`), or a custom formatter class.
#
# ### Note
#
# For internal purposes, `add_formatter` also accepts the name of a class
# and path to a file that contains that class definition, but you should
# consider that a private api that may change at any time without notice.
def add_formatter(formatter_to_use, path=nil)
formatter_class =
built_in_formatter(formatter_to_use) ||
custom_formatter(formatter_to_use) ||
(raise ArgumentError, "Formatter '#{formatter_to_use}' unknown - maybe you meant 'documentation' or 'progress'?.")
formatters << formatter_class.new(path ? file_at(path) : output)
end
alias_method :formatter=, :add_formatter
def formatters
@formatters ||= []
end
def reporter
@reporter ||= begin
add_formatter('progress') if formatters.empty?
Reporter.new(*formatters)
end
end
def files_or_directories_to_run=(*files)
files = files.flatten
files << default_path if command == 'rspec' && default_path && files.empty?
self.files_to_run = get_files_to_run(files)
end
# @api private
def command
$0.split(File::SEPARATOR).last
end
# @api private
def get_files_to_run(files)
patterns = pattern.split(",")
files.map do |file|
if File.directory?(file)
patterns.map do |pattern|
if pattern =~ /^#{file}/
Dir[pattern.strip]
else
Dir["#{file}/{#{pattern.strip}}"]
end
end
else
if file =~ /^(.*?)((?:\:\d+)+)$/
path, lines = $1, $2[1..-1].split(":").map{|n| n.to_i}
add_location path, lines
path
else
file
end
end
end.flatten
end
# Creates a method that delegates to `example` including the submitted
# `args`. Used internally to add variants of `example` like `pending`:
#
# @example
# alias_example_to :pending, :pending => true
#
# # This lets you do this:
#
# describe Thing do
# pending "does something" do
# thing = Thing.new
# end
# end
#
# # ... which is the equivalent of
#
# describe Thing do
# it "does something", :pending => true do
# thing = Thing.new
# end
# end
def alias_example_to(new_name, *args)
extra_options = build_metadata_hash_from(args)
RSpec::Core::ExampleGroup.alias_example_to(new_name, extra_options)
end
# Define an alias for it_should_behave_like that allows different
# language (like "it_has_behavior" or "it_behaves_like") to be
# employed when including shared examples.
#
# Example:
#
# alias_it_should_behave_like_to(:it_has_behavior, 'has behavior:')
#
# allows the user to include a shared example group like:
#
# describe Entity do
# it_has_behavior 'sortability' do
# let(:sortable) { Entity.new }
# end
# end
#
# which is reported in the output as:
#
# Entity
# has behavior: sortability
# # sortability examples here
def alias_it_should_behave_like_to(new_name, report_label = '')
RSpec::Core::ExampleGroup.alias_it_should_behave_like_to(new_name, report_label)
end
# Adds key/value pairs to the `inclusion_filter`. If the
# `treat_symbols_as_metadata_keys_with_true_values` config option is set
# to true and `args` includes any symbols that are not part of a hash,
# each symbol is treated as a key in the hash with the value `true`.
#
# @example
# filter_run_including :x => 'y'
#
# # with treat_symbols_as_metadata_keys_with_true_values = true
# filter_run_including :foo # results in {:foo => true}
def filter_run_including(*args)
filter = build_metadata_hash_from(args)
if already_set_standalone_filter?
warn_already_set_standalone_filter(filter)
elsif contains_standalone_filter?(filter)
@inclusion_filter.replace(filter)
else
@inclusion_filter.merge!(filter)
end
end
alias_method :filter_run, :filter_run_including
# Clears and reassigns the `inclusion_filter`. Set to `nil` if you don't
# want any inclusion filter at all.
def inclusion_filter=(filter)
filter = build_metadata_hash_from([filter])
filter.empty? ? @inclusion_filter.clear : @inclusion_filter.replace(filter)
end
alias_method :filter=, :inclusion_filter=
# Returns the `inclusion_filter`. If none has been set, returns an empty
# hash.
def inclusion_filter
value_for(:inclusion_filter, @inclusion_filter) || {}
end
alias_method :filter, :inclusion_filter
# Adds key/value pairs to the `exclusion_filter`. If the
# `treat_symbols_as_metadata_keys_with_true_values` config option is set
# to true and `args` excludes any symbols that are not part of a hash,
# each symbol is treated as a key in the hash with the value `true`.
#
# @example
# filter_run_excluding :x => 'y'
#
# # with treat_symbols_as_metadata_keys_with_true_values = true
# filter_run_excluding :foo # results in {:foo => true}
def filter_run_excluding(*args)
@exclusion_filter.merge!(build_metadata_hash_from(args))
end
# Clears and reassigns the `exclusion_filter`. Set to `nil` if you don't
# want any exclusion filter at all.
def exclusion_filter=(filter)
filter = build_metadata_hash_from([filter])
filter.empty? ? @exclusion_filter.clear : @exclusion_filter.replace(filter)
end
# Returns the `exclusion_filter`. If none has been set, returns an empty
# hash.
def exclusion_filter
value_for(:exclusion_filter, @exclusion_filter) || {}
end
STANDALONE_FILTERS = [:line_numbers, :full_description]
# @api private
def already_set_standalone_filter?
contains_standalone_filter?(inclusion_filter)
end
# @api private
def contains_standalone_filter?(filter)
STANDALONE_FILTERS.any? {|key| filter.has_key?(key)}
end
def include(mod, *args)
filters = build_metadata_hash_from(args)
include_or_extend_modules << [:include, mod, filters]
end
def extend(mod, *args)
filters = build_metadata_hash_from(args)
include_or_extend_modules << [:extend, mod, filters]
end
# @api private
#
# Used internally to extend a group with modules using `include` and/or
# `extend`.
def configure_group(group)
include_or_extend_modules.each do |include_or_extend, mod, filters|
next unless filters.empty? || group.any_apply?(filters)
group.send(include_or_extend, mod)
end
end
def configure_mock_framework
RSpec::Core::ExampleGroup.send(:include, mock_framework)
end
def configure_expectation_framework
expectation_frameworks.each do |framework|
RSpec::Core::ExampleGroup.send(:include, framework)
end
end
def load_spec_files
files_to_run.map {|f| load File.expand_path(f) }
raise_if_rspec_1_is_loaded
end
attr_reader :seed
def seed=(seed)
@order = 'rand'
@seed = seed.to_i
end
def randomize?
order.to_s.match(/rand/)
end
def order=(type)
order, seed = type.to_s.split(':')
if order == 'default'
@order = nil
@seed = nil
else
@order = order
@seed = seed.to_i if seed
end
end
private
def value_for(key, default=nil)
if [:inclusion_filter, :exclusion_filter].any? {|k| key == k}
local = { :inclusion_filter => @inclusion_filter, :exclusion_filter => @exclusion_filter }
Configuration.reconcile_opposing_filters(local, @preferred_options, :inclusion_filter, :exclusion_filter)
Configuration.reconcile_opposing_filters(local, @preferred_options, :exclusion_filter, :inclusion_filter)
@preferred_options.has_key?(key) ? default.merge(@preferred_options[key]) : default
else
@preferred_options.has_key?(key) ? @preferred_options[key] : default
end
end
def add_location(file_path, line_numbers)
# filter_locations is a hash of expanded paths to arrays of line
# numbers to match against.
filter_locations = @inclusion_filter[:locations] ||= {}
(filter_locations[File.expand_path(file_path)] ||= []).push(*line_numbers)
filter_run(:locations => filter_locations)
end
def warn_already_set_standalone_filter(options)
warn "Filtering by #{options.inspect} is not possible since " \
"you are already filtering by #{inclusion_filter.inspect}"
end
def assert_no_example_groups_defined(config_option)
if RSpec.world.example_groups.any?
raise MustBeConfiguredBeforeExampleGroupsError.new(
"RSpec's #{config_option} configuration option must be configured before " +
"any example groups are defined, but you have already defined a group."
)
end
end
def raise_if_rspec_1_is_loaded
if defined?(Spec) && defined?(Spec::VERSION::MAJOR) && Spec::VERSION::MAJOR == 1
raise <<-MESSAGE
#{'*'*80}
You are running rspec-2, but it seems as though rspec-1 has been loaded as
well. This is likely due to a statement like this somewhere in the specs:
require 'spec'
Please locate that statement, remove it, and try again.
#{'*'*80}
MESSAGE
end
end
def output_to_tty?
begin
output_stream.tty? || tty?
rescue NoMethodError
false
end
end
def built_in_formatter(key)
case key.to_s
when 'd', 'doc', 'documentation', 's', 'n', 'spec', 'nested'
require 'rspec/core/formatters/documentation_formatter'
RSpec::Core::Formatters::DocumentationFormatter
when 'h', 'html'
require 'rspec/core/formatters/html_formatter'
RSpec::Core::Formatters::HtmlFormatter
when 't', 'textmate'
require 'rspec/core/formatters/text_mate_formatter'
RSpec::Core::Formatters::TextMateFormatter
when 'p', 'progress'
require 'rspec/core/formatters/progress_formatter'
RSpec::Core::Formatters::ProgressFormatter
end
end
def custom_formatter(formatter_ref)
if Class === formatter_ref
formatter_ref
elsif string_const?(formatter_ref)
begin
eval(formatter_ref)
rescue NameError
require path_for(formatter_ref)
eval(formatter_ref)
end
end
end
def string_const?(str)
str.is_a?(String) && /\A[A-Z][a-zA-Z0-9_:]*\z/ =~ str
end
def path_for(const_ref)
underscore_with_fix_for_non_standard_rspec_naming(const_ref)
end
def underscore_with_fix_for_non_standard_rspec_naming(string)
underscore(string).sub(%r{(^|/)r_spec($|/)}, '\\1rspec\\2')
end
# activesupport/lib/active_support/inflector/methods.rb, line 48
def underscore(camel_cased_word)
word = camel_cased_word.to_s.dup
word.gsub!(/::/, '/')
word.gsub!(/([A-Z]+)([A-Z][a-z])/,'\1_\2')
word.gsub!(/([a-z\d])([A-Z])/,'\1_\2')
word.tr!("-", "_")
word.downcase!
word
end
def file_at(path)
FileUtils.mkdir_p(File.dirname(path))
File.new(path, 'w')
end
end
end
end