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🐛 Fix SequenceSet#include? handling of invalid inputs #479

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May 31, 2025
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17 changes: 10 additions & 7 deletions lib/net/imap/sequence_set.rb
Original file line number Diff line number Diff line change
Expand Up @@ -528,17 +528,17 @@ def ===(other)
def cover?(other) input_to_tuples(other).none? { !include_tuple?(_1) } end

# Returns +true+ when a given number or range is in +self+, and +false+
# otherwise. Returns +false+ unless +number+ is an Integer, Range, or
# <tt>*</tt>.
# otherwise. Returns +nil+ when +number+ isn't a valid SequenceSet
# element (Integer, Range, <tt>*</tt>, +sequence-set+ string).
#
# set = Net::IMAP::SequenceSet["5:10,100,111:115"]
# set.include? 1 #=> false
# set.include? 5..10 #=> true
# set.include? 11..20 #=> false
# set.include? 100 #=> true
# set.include? 6 #=> true, covered by "5:10"
# set.include? 4..9 #=> true, covered by "5:10"
# set.include? "4:9" #=> true, strings are parsed
# set.include? 6..9 #=> true, covered by "5:10"
# set.include? "6:9" #=> true, strings are parsed
# set.include? 4..9 #=> false, intersection is not sufficient
# set.include? "*" #=> false, use #limit to re-interpret "*"
# set.include? -1 #=> false, -1 is interpreted as "*"
Expand All @@ -547,11 +547,14 @@ def cover?(other) input_to_tuples(other).none? { !include_tuple?(_1) } end
# set.include? :* #=> true
# set.include? "*" #=> true
# set.include? -1 #=> true
# set.include? 200.. #=> true
# set.include? 100.. #=> false
# set.include?(200..) #=> true
# set.include?(100..) #=> false
#
# Related: #include_star?, #cover?, #===
def include?(element) include_tuple? input_to_tuple element end
def include?(element)
tuple = input_to_tuple element rescue nil
!!include_tuple?(tuple) if tuple
end

alias member? include?

Expand Down
13 changes: 8 additions & 5 deletions test/net/imap/test_sequence_set.rb
Original file line number Diff line number Diff line change
Expand Up @@ -794,13 +794,16 @@ def obj.to_sequence_set; 192_168.001_255 end
end

test "#include?" do
assert SequenceSet["2:4"].include?(3)
assert SequenceSet["2,*:12"].include? :*
assert SequenceSet["2,*:12"].include?(-1)
assert_equal true, SequenceSet["2:4"].include?(3)
assert_equal true, SequenceSet["2,*:12"].include?(:*)
assert_equal true, SequenceSet["2,*:12"].include?(-1)
assert_nil SequenceSet["1:*"].include?("hopes and dreams")
assert_nil SequenceSet["1:*"].include?(:wat?)
assert_nil SequenceSet["1:*"].include?([1, 2, 3])
set = SequenceSet.new Array.new(100) { rand(1..1500) }
rev = (~set).limit(max: 1_501)
set.numbers.each do assert set.include?(_1) end
rev.numbers.each do refute set.include?(_1) end
set.numbers.each do assert_equal true, set.include?(_1) end
rev.numbers.each do assert_equal false, set.include?(_1) end
end

test "#cover?" do
Expand Down