Files
wren/test/core/string/subscript_range.wren
Bob Nystrom 64eccdd9be Reorganize tests and benchmark scripts.
Mainly to get rid of one top level directory. But this will
also be useful when there are tests of the embedding API.
2015-03-14 12:45:56 -07:00

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var string = "abcde"
IO.print(string[0..0]) // expect: a
IO.print(string[1...1] == "") // expect: true
IO.print(string[1..2]) // expect: bc
IO.print(string[1...2]) // expect: b
IO.print(string[2..4]) // expect: cde
IO.print(string[2...5]) // expect: cde
// A backwards range reverses.
IO.print(string[3..1]) // expect: dcb
IO.print(string[3...1]) // expect: dc
IO.print(string[3...3] == "") // expect: true
// Negative ranges index from the end.
IO.print(string[-5..-2]) // expect: abcd
IO.print(string[-5...-2]) // expect: abc
IO.print(string[-3..-5]) // expect: cba
IO.print(string[-3...-6]) // expect: cba
// Half-negative ranges are treated like the negative value is fixed before
// walking the range.
IO.print(string[-5..3]) // expect: abcd
IO.print(string[-3...5]) // expect: cde
IO.print(string[-2..1]) // expect: dcb
IO.print(string[-2...0]) // expect: dcb
IO.print(string[1..-2]) // expect: bcd
IO.print(string[2...-1]) // expect: cd
IO.print(string[4..-5]) // expect: edcba
IO.print(string[3...-6]) // expect: dcba
// An empty range at zero is allowed on an empty string.
IO.print(""[0...0] == "") // expect: true
IO.print(""[0..-1] == "") // expect: true