lib/m/test_collection.rb
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 lines
# Into a new collection, filter only the tests that...
collection = select do |test|
lines.none? || lines.any? { |line| (test.start_line..test.end_line).cover?(line) }
end
self.class.new collection
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