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char.jl
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char.jl
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# This file is a part of Julia. License is MIT: https://julialang.org/license
#tests for /base/char.jl
@test typemin(Char) == Char(0)
@test ndims(Char) == 0
@test getindex('a', 1) == 'a'
@test_throws BoundsError getindex('a', 2)
# This is current behavior, but it seems questionable
@test getindex('a', 1, 1, 1) == 'a'
@test_throws BoundsError getindex('a', 1, 1, 2)
@test 'b' + 1 == 'c'
@test typeof('b' + 1) == Char
@test 1 + 'b' == 'c'
@test typeof(1 + 'b') == Char
@test 'b' - 1 == 'a'
@test typeof('b' - 1) == Char
@test widen('a') === 'a'
let
numberchars = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9']
lowerchars = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z']
upperchars = ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z']
plane1_playingcards = ['🂠', '🂡', '🂢', '🂣', '🂤', '🂥', '🂦', '🂧', '🂨', '🂩', '🂪', '🂫', '🂬', '🂭', '🂮']
plane2_cjkpart1 = ['𠀀', '𠀁', '𠀂', '𠀃', '𠀄', '𠀅', '𠀆', '𠀇', '𠀈', '𠀉', '𠀊', '𠀋', '𠀌', '𠀍', '𠀎', '𠀏']
testarrays = [numberchars; lowerchars; upperchars; plane1_playingcards; plane2_cjkpart1]
#Integer(x::Char) = Int(x)
#tests ASCII 48 - 57
counter = 48
for x in numberchars
@test Integer(x) == counter
counter += 1
end
#tests ASCII 65 - 90
counter = 65
for x in upperchars
@test Integer(x) == counter
counter += 1
end
#tests ASCII 97 - 122
counter = 97
for x in lowerchars
@test Integer(x) == counter
counter += 1
end
#tests Unicode plane 1: 127136 - 127150
counter = 127136
for x in plane1_playingcards
@test Integer(x) == counter
counter += 1
end
#tests Unicode plane 2: 131072 - 131087
counter = 131072
for x in plane2_cjkpart1
@test Integer(x) == counter
counter += 1
end
#convert(::Type{Char}, x::Float16) = char(convert(UInt32, x))
#convert(::Type{Char}, x::Float32) = char(convert(UInt32, x))
#convert(::Type{Char}, x::Float64) = char(convert(UInt32, x))
for x = 1:9
@test convert(Char, Float16(x)) == convert(Char, Float32(x)) == convert(Char, Float64(x)) == Char(x)
end
#size(c::Char) = ()
for x in testarrays
@test size(x) == ()
@test_throws BoundsError size(x,0)
@test size(x,1) == 1
end
#ndims(c::Char) = 0
for x in testarrays
@test ndims(x) == 0
end
#length(c::Char) = 1
for x in testarrays
@test length(x) == 1
end
#endof(c::Char) = 1
for x in testarrays
@test endof(x) == 1
end
#getindex(c::Char) = c
for x in testarrays
@test getindex(x) == x
end
#first(c::Char) = c
for x in testarrays
@test first(x) == x
end
#last(c::Char) = c
for x in testarrays
@test last(x) == x
end
#eltype(c::Char) = Char
for x in testarrays
@test eltype(x) == Char
end
#start(c::Char) = false
for x in testarrays
@test start(x) == false
end
#next(c::Char, state) = (c, true)
for x in testarrays
for state in [true, false]
@test next(x, state) == (x, true)
end
end
#done(c::Char, state) = state
for x in testarrays
for state in [true, false]
@test done(x, state) == state
end
end
#isless(x::Char, y::Integer) = isless(UInt32(x), y)
for x in upperchars
@test isless(x, Char(91)) == true
end
for x in lowerchars
@test isless(x, Char(123)) == true
end
for x in numberchars
@test isless(x, Char(66)) == true
end
for x in plane1_playingcards
@test isless(x, Char(127151)) == true
end
for x in plane2_cjkpart1
@test isless(x, Char(131088)) == true
end
#isless(x::Integer, y::Char) = isless(x, UInt32(y))
for x in upperchars
@test isless(Char(64), x) == true
end
for x in lowerchars
@test isless(Char(96), x) == true
end
for x in numberchars
@test isless(Char(47), x) == true
end
for x in plane1_playingcards
@test isless(Char(127135), x) == true
end
for x in plane2_cjkpart1
@test isless(Char(131071), x) == true
end
end #end of let block
@test convert(Signed, 'A') === Int32(65)
@test convert(Unsigned, 'A') === UInt32(65)
# issue #14573
let
array = ['a', 'b', 'c'] + [1, 2, 3]
@test array == ['b', 'd', 'f']
@test eltype(array) == Char
array = [1, 2, 3] + ['a', 'b', 'c']
@test array == ['b', 'd', 'f']
@test eltype(array) == Char
array = ['a', 'b', 'c'] - [0, 1, 2]
@test array == ['a', 'a', 'a']
@test eltype(array) == Char
end
@test !isequal('x', 120)
@test sprint(show, "text/plain", '$') == "'\$': ASCII/Unicode U+0024 (category Sc: Symbol, currency)"
@test repr('$') == "'\$'"
@testset "read incomplete character at end of stream or file" begin
local file = tempname()
local iob = IOBuffer([0xf0])
local bytes(c::Char) = Vector{UInt8}(string(c))
@test bytes(read(iob, Char)) == [0xf0]
@test eof(iob)
try
write(file, 0xf0)
open(file) do io
@test bytes(read(io, Char)) == [0xf0]
@test eof(io)
end
let io = Base.Filesystem.open(file, Base.Filesystem.JL_O_RDONLY)
@test bytes(read(io, Char)) == [0xf0]
@test eof(io)
close(io)
end
finally
rm(file, force=true)
end
end
function test_overlong(c::Char, n::Integer, rep::String)
@test Int(c) == n
@test sprint(show, c) == rep
end
# TODO: use char syntax once #25072 is fixed
test_overlong('\0', 0, "'\\0'")
test_overlong("\xc0\x80"[1], 0, "'\\xc0\\x80'")
test_overlong("\xe0\x80\x80"[1], 0, "'\\xe0\\x80\\x80'")
test_overlong("\xf0\x80\x80\x80"[1], 0, "'\\xf0\\x80\\x80\\x80'")
test_overlong('\x30', 0x30, "'0'")
test_overlong("\xc0\xb0"[1], 0x30, "'\\xc0\\xb0'")
test_overlong("\xe0\x80\xb0"[1], 0x30, "'\\xe0\\x80\\xb0'")
test_overlong("\xf0\x80\x80\xb0"[1], 0x30, "'\\xf0\\x80\\x80\\xb0'")
test_overlong('\u8430', 0x8430, "'萰'")
test_overlong("\xf0\x88\x90\xb0"[1], 0x8430, "'\\xf0\\x88\\x90\\xb0'")