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Contents
module Enumerable
def any_not?(&block)
not all? { |e| yield(e) }
end
def none?(&block)
not any? { |e| yield(e) }
end
def stable_sort_by
# NOTE: if soort_by wouldn't enumerate the array members from
# the beginning this would fail.
i=0
sort_by { |x| [ yield(x), i+=1 ] }
end
def hmap(&block)
inject({}) { |hash, obj| hash[obj] = yield(obj); hash }
end
end
module Enumerable::Etest
def test_stable_sort_by
data = [[1, 'b'], [1, 'c'], [0, 'b'], [0, 'a']]
# This might or might not fail, but is not guaranteed to do so:
# assert_equal [[0, 'b'], [0, 'a'], [ 1, 'b'], [1, 'c']], data.stable_sort_by { |t| t[0] }
assert_equal [[0, 'b'], [0, 'a'], [ 1, 'b'], [1, 'c']], data.stable_sort_by { |t| t[0] }
end
def test_any_none(&block)
assert_equal(false, [ 1, 2, true, false ].any?(&:nil?))
assert_equal(true, [ 1, 2, true, false ].none?(&:nil?))
assert_equal(true, [ 1, 2, true, false, nil ].any?(&:nil?))
assert_equal(false, [ 1, 2, true, false, nil ].none?(&:nil?))
assert_equal(true, [ nil ].any?(&:nil?))
assert_equal(false, [ 1 ].any?(&:nil?))
assert_equal(false, [ ].any?(&:nil?))
assert_equal(false, [ nil ].none?(&:nil?))
assert_equal(true, [ 1 ].none?(&:nil?))
assert_equal(true, [ ].none?(&:nil?))
end
def test_any_not_all(&block)
assert_equal(true, [ 1, 2, true, false ].any_not?(&:nil?))
assert_equal(true, [ 1, 2, nil ].any_not?(&:nil?))
assert_equal(false, [ nil ].any_not?(&:nil?))
assert_equal(true, [ 1 ].any_not?(&:nil?))
assert_equal(false, [ ].any_not?(&:nil?))
end
def test_hmap
h = %w(1 2 3)
assert_equal({ "1" => 1, "2" => 4, "3" => 9}, h.hmap do |line| line.to_i * line.to_i end)
end
end if VEX_TEST == "base"
Version data entries
12 entries across 12 versions & 1 rubygems