/
filter_manager.rb
262 lines (222 loc) · 6.8 KB
/
filter_manager.rb
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module RSpec
module Core
# @private
# Manages the filtering of examples and groups by matching tags declared on
# the command line or options files, or filters declared via
# `RSpec.configure`, with hash key/values submitted within example group
# and/or example declarations. For example, given this declaration:
#
# describe Thing, :awesome => true do
# it "does something" do
# # ...
# end
# end
#
# That group (or any other with `:awesome => true`) would be filtered in
# with any of the following commands:
#
# rspec --tag awesome:true
# rspec --tag awesome
# rspec -t awesome:true
# rspec -t awesome
#
# Prefixing the tag names with `~` negates the tags, thus excluding this
# group with any of:
#
# rspec --tag ~awesome:true
# rspec --tag ~awesome
# rspec -t ~awesome:true
# rspec -t ~awesome
#
# ## Options files and command line overrides
#
# Tag declarations can be stored in `.rspec`, `~/.rspec`, or a custom
# options file. This is useful for storing defaults. For example, let's
# say you've got some slow specs that you want to suppress most of the
# time. You can tag them like this:
#
# describe Something, :slow => true do
#
# And then store this in `.rspec`:
#
# --tag ~slow:true
#
# Now when you run `rspec`, that group will be excluded.
#
# ## Overriding
#
# Of course, you probably want to run them sometimes, so you can override
# this tag on the command line like this:
#
# rspec --tag slow:true
#
# ## RSpec.configure
#
# You can also store default tags with `RSpec.configure`. We use `tag` on
# the command line (and in options files like `.rspec`), but for historical
# reasons we use the term `filter` in `RSpec.configure:
#
# RSpec.configure do |c|
# c.filter_run_including :foo => :bar
# c.filter_run_excluding :foo => :bar
# end
#
# These declarations can also be overridden from the command line.
#
# @see RSpec.configure
# @see Configuration#filter_run_including
# @see Configuration#filter_run_excluding
class FilterManager
attr_reader :exclusions, :inclusions
def initialize
@exclusions, @inclusions = FilterRules.build
end
# @api private
#
# @param file_path [String]
# @param line_numbers [Array]
def add_location(file_path, line_numbers)
# locations is a hash of expanded paths to arrays of line
# numbers to match against. e.g.
# { "path/to/file.rb" => [37, 42] }
locations = inclusions.delete(:locations) || Hash.new { |h, k| h[k] = [] }
locations[File.expand_path(file_path)].push(*line_numbers)
inclusions.add_location(locations)
end
def empty?
inclusions.empty? && exclusions.empty?
end
def prune(examples)
if inclusions.standalone?
base_exclusions = ExclusionRules.new
examples.select { |e| !base_exclusions.include_example?(e) && include?(e) }
else
examples.select { |e| !exclude?(e) && include?(e) }
end
end
def exclude(*args)
exclusions.add(args.last)
end
def exclude_only(*args)
exclusions.use_only(args.last)
end
def exclude_with_low_priority(*args)
exclusions.add_with_low_priority(args.last)
end
def exclude?(example)
exclusions.include_example?(example)
end
def include(*args)
inclusions.add(args.last)
end
def include_only(*args)
inclusions.use_only(args.last)
end
def include_with_low_priority(*args)
inclusions.add_with_low_priority(args.last)
end
def include?(example)
inclusions.include_example?(example)
end
end
# @private
class FilterRules
PROC_HEX_NUMBER = /0x[0-9a-f]+@/
PROJECT_DIR = File.expand_path('.')
attr_accessor :opposite
attr_reader :rules
def self.build
exclusions = ExclusionRules.new
inclusions = InclusionRules.new
exclusions.opposite = inclusions
inclusions.opposite = exclusions
[exclusions, inclusions]
end
def initialize(*args, &block)
@rules = Hash.new(*args, &block)
end
def add(updated)
@rules.merge!(updated).each_key { |k| opposite.delete(k) }
end
def add_with_low_priority(updated)
updated = updated.merge(@rules)
opposite.each_pair { |k, v| updated.delete(k) if updated[k] == v }
@rules.replace(updated)
end
def use_only(updated)
updated.each_key { |k| opposite.delete(k) }
@rules.replace(updated)
end
def clear
@rules.clear
end
def delete(key)
@rules.delete(key)
end
def fetch(*args, &block)
@rules.fetch(*args, &block)
end
def [](key)
@rules[key]
end
def empty?
rules.empty?
end
def each_pair(&block)
@rules.each_pair(&block)
end
def description
rules.inspect.gsub(PROC_HEX_NUMBER, '').gsub(PROJECT_DIR, '.').gsub(' (lambda)', '')
end
end
# @private
class InclusionRules < FilterRules
STANDALONE_FILTERS = [:locations, :full_description]
def add_location(locations)
replace_filters(:locations => locations)
end
def add(*args)
apply_standalone_filter(*args) || super
end
def add_with_low_priority(*args)
apply_standalone_filter(*args) || super
end
def use(*args)
apply_standalone_filter(*args) || super
end
def include_example?(example)
return true if @rules.empty?
MetadataFilter.apply?(:any?, @rules, example.metadata)
end
def standalone?
is_standalone_filter?(@rules)
end
private
def apply_standalone_filter(updated)
return true if standalone?
return nil unless is_standalone_filter?(updated)
replace_filters(updated)
true
end
def replace_filters(new_rules)
@rules.replace(new_rules)
opposite.clear
end
def is_standalone_filter?(rules)
STANDALONE_FILTERS.any? { |key| rules.key?(key) }
end
end
# @private
class ExclusionRules < FilterRules
CONDITIONAL_FILTERS = {
:if => lambda { |value| !value },
:unless => lambda { |value| value }
}.freeze
def include_example?(example)
example_meta = example.metadata
return true if MetadataFilter.apply?(:any?, @rules, example_meta)
MetadataFilter.apply?(:any?, CONDITIONAL_FILTERS, example_meta)
end
end
end
end