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# This file is a part of Julia. License is MIT: https://julialang.org/license
@testset "string indexing" begin
let str = "this is a test\xed\x80"
@test iterate(str, 15) == (reinterpret(Char, 0xed800000), 17)
@test_throws BoundsError getindex(str, 0:3)
@test_throws BoundsError getindex(str, 17:18)
@test_throws BoundsError getindex(str, 2:17)
@test_throws BoundsError getindex(str, 16:17)
@test string(Char(0x110000)) == "\xf4\x90\x80\x80"
end
end
@testset "string reverse" begin
@test reverse("") == ""
@test reverse("a") == "a"
@test reverse("abc") == "cba"
@test reverse("xyz\uff\u800\uffff\U10ffff") == "\U10ffff\uffff\u800\uffzyx"
for (s, r) in [
"xyz\xc1" => "\xc1zyx",
"xyz\xd0" => "\xd0zyx",
"xyz\xe0" => "\xe0zyx",
"xyz\xed\x80" => "\xed\x80zyx",
"xyz\xf0" => "\xf0zyx",
"xyz\xf0\x80" => "\xf0\x80zyx",
"xyz\xf0\x80\x80" => "\xf0\x80\x80zyx",
]
@test reverse(s) == r
end
end
@testset "string convert" begin
@test String(b"this is a test\xed\x80\x80") ==
"this is a test\xed\x80\x80" ==
"this is a test\ud000"
# Specifically check UTF-8 string whose lead byte is same as a surrogate
@test String(b"\xed\x9f\xbf") == "\xed\x9f\xbf" == "\ud7ff"
end
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