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require "spec"
require "io/hexdump"
describe IO::Hexdump do
describe "read" do
it "prints hexdump" do
ascii_table = <<-EOF
00000000 20 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f !"#$%&'()*+,-./
00000010 30 31 32 33 34 35 36 37 38 39 3a 3b 3c 3d 3e 3f 0123456789:;<=>?
00000020 40 41 42 43 44 45 46 47 48 49 4a 4b 4c 4d 4e 4f @ABCDEFGHIJKLMNO
00000030 50 51 52 53 54 55 56 57 58 59 5a 5b 5c 5d 5e 5f PQRSTUVWXYZ[\\]^_
00000040 60 61 62 63 64 65 66 67 68 69 6a 6b 6c 6d 6e 6f `abcdefghijklmno
00000050 70 71 72 73 74 75 76 77 78 79 7a 7b 7c 7d 7e 7f pqrstuvwxyz{|}~.
00000060 80 81 82 83 84 .....
EOF
IO.pipe do |r, w|
io = IO::Memory.new(ascii_table.bytesize)
r = IO::Hexdump.new(r, output: io, read: true)
slice = Bytes.new(101) { |i| i.to_u8 + 32 }
w.write(slice)
buf = uninitialized UInt8[101]
r.read_fully(buf.to_slice).should eq(101)
buf.to_slice.should eq(slice)
io.to_s.should eq("#{ascii_table}\n")
end
end
end
describe "write" do
it "prints hexdump" do
ascii_table = <<-EOF
00000000 20 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f !"#$%&'()*+,-./
00000010 30 31 32 33 34 35 36 37 38 39 3a 3b 3c 3d 3e 3f 0123456789:;<=>?
00000020 40 41 42 43 44 45 46 47 48 49 4a 4b 4c 4d 4e 4f @ABCDEFGHIJKLMNO
00000030 50 51 52 53 54 55 56 57 58 59 5a 5b 5c 5d 5e 5f PQRSTUVWXYZ[\\]^_
00000040 60 61 62 63 64 65 66 67 68 69 6a 6b 6c 6d 6e 6f `abcdefghijklmno
00000050 70 71 72 73 74 75 76 77 78 79 7a 7b 7c 7d 7e 7f pqrstuvwxyz{|}~.
EOF
IO.pipe do |r, w|
io = IO::Memory.new(ascii_table.bytesize)
w = IO::Hexdump.new(w, output: io, write: true)
slice = Bytes.new(96) { |i| i.to_u8 + 32 }
w.write(slice)
buf = uninitialized UInt8[96]
r.read_fully(buf.to_slice).should eq(96)
buf.to_slice.should eq(slice)
io.to_s.should eq("#{ascii_table}\n")
end
end
end
end
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