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test_collection.rb
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test_collection.rb
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require "forwardable"
module M
### Custom wrapper around an array of test methods
# In charge of some smart querying, filtering, sorting, etc on the the
# test methods
class TestCollection
include Enumerable
extend Forwardable
# This should act like an array, so forward some common methods over to the
# internal collection
def_delegators :@collection, :size, :<<, :each
def initialize(collection = nil)
@collection = collection || []
end
# Slice out tests that may be within the given line.
# Returns a new TestCollection with the results.
def within(line)
# Into a new collection, filter only the tests that...
self.class.new(select do |test|
# are within the given boundary for this method
# or include everything if the line given is zero (no line)
line.zero? || (test.start_line..test.end_line).include?(line)
end)
end
# Used to line up method names in `#sprintf` when `m` aborts
def column_size
# Boil down the collection of test methods to the name of the method's
# size, then find the largest one
@column_size ||= map { |test| test.name.to_s.size }.max
end
# Be considerate when printing out tests and pre-sort them by line number
def by_line_number(&block)
# On each member of the collection, sort by line number and yield
# the block into the sorted collection
sort_by(&:start_line).each(&block)
end
end
end