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# This file is a part of Julia. License is MIT: https://julialang.org/license
@testset "skipchars for IOStream" begin
mktemp() do path, file
function append_to_file(str)
mark(file)
print(file, str)
flush(file)
reset(file)
end
# test it doesn't error on eof
@test eof(skipchars(isspace, file))
# test it correctly skips
append_to_file(" ")
@test eof(skipchars(isspace, file))
# test it correctly detects comment lines
append_to_file("# \n ")
@test eof(skipchars(isspace, file, linecomment='#'))
# test it stops at the appropriate time
append_to_file(" not a space")
@test !eof(skipchars(isspace, file))
@test read(file, Char) == 'n'
# test it correctly ignores the contents of comment lines
append_to_file(" #not a space \n not a space")
@test !eof(skipchars(isspace, file, linecomment='#'))
@test read(file, Char) == 'n'
# test it correctly handles unicode
for (byte, char) in zip(1:4, ('@','߷','࿊','𐋺'))
append_to_file("abcdef$char")
@test ncodeunits(char) == byte
@test !eof(skipchars(isletter, file))
@test read(file, Char) == char
end
end
end
@testset "readbytes_some! via readbytes!" begin
mktemp() do path, file
function append_to_file(str)
mark(file)
print(file, str)
flush(file)
reset(file)
end
append_to_file("aaaaaaaaaaaaaaaaa")
b = UInt8[0]
readbytes!(file, b, all=false)
@test String(b) == "a"
# with resizing of b
b = UInt8[]
readbytes!(file, b, 2, all=false)
@test String(b) == "aa"
# readbytes_all with resizing
b = UInt8[]
readbytes!(file, b, 15)
@test String(b) == "aaaaaaaaaaaaaa"
end
end
@testset "issue #18755" begin
mktemp() do path, io
write(io, zeros(UInt8, 131073))
@test position(io) == 131073
write(io, zeros(UInt8, 131073))
@test position(io) == 262146
end
end
@testset "issue #27951" begin
a = UInt8[1 3; 2 4]
s = view(a, [1,2], :)
mktemp() do path, io
write(io, s)
seek(io, 0)
b = Vector{UInt8}(undef, 4)
@test readbytes!(io, b) == 4
@test b == 0x01:0x04
end
end
@test Base.open_flags(read=false, write=true, append=false) == (read=false, write=true, create=true, truncate=true, append=false)
@testset "issue #30978" begin
mktemp() do path, io
x = rand(UInt8, 100)
write(path, x)
# Should not throw OutOfMemoryError
y = open(f -> read(f, typemax(Int)), path)
@test x == y
# Should resize y to right length
y = zeros(UInt8, 99)
open(f -> readbytes!(f, y, 101, all=true), path)
@test x == y
y = zeros(UInt8, 99)
open(f -> readbytes!(f, y, 101, all=false), path)
@test x == y
# Should never shrink y below original size
y = zeros(UInt8, 101)
open(f -> readbytes!(f, y, 102, all=true), path)
@test y == [x; 0]
y = zeros(UInt8, 101)
open(f -> readbytes!(f, y, 102, all=false), path)
@test y == [x; 0]
end
end
@testset "peek(::IOStream)" begin
mktemp() do _, file
@test_throws EOFError peek(file)
mark(file)
write(file, "Lávate las manos")
flush(file)
reset(file)
@test peek(file) == 0x4c
end
end
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