mirror of
https://github.com/ruby/ruby.git
synced 2022-11-09 12:17:21 -05:00
354 lines
8.2 KiB
Ruby
354 lines
8.2 KiB
Ruby
# frozen_string_literal: false
|
|
|
|
require 'tempfile'
|
|
|
|
class TestIOBuffer < Test::Unit::TestCase
|
|
experimental = Warning[:experimental]
|
|
begin
|
|
Warning[:experimental] = false
|
|
IO::Buffer.new(0)
|
|
ensure
|
|
Warning[:experimental] = experimental
|
|
end
|
|
|
|
def assert_negative(value)
|
|
assert(value < 0, "Expected #{value} to be negative!")
|
|
end
|
|
|
|
def assert_positive(value)
|
|
assert(value > 0, "Expected #{value} to be positive!")
|
|
end
|
|
|
|
def test_flags
|
|
assert_equal 1, IO::Buffer::EXTERNAL
|
|
assert_equal 2, IO::Buffer::INTERNAL
|
|
assert_equal 4, IO::Buffer::MAPPED
|
|
|
|
assert_equal 32, IO::Buffer::LOCKED
|
|
assert_equal 64, IO::Buffer::PRIVATE
|
|
|
|
assert_equal 128, IO::Buffer::READONLY
|
|
end
|
|
|
|
def test_endian
|
|
assert_equal 4, IO::Buffer::LITTLE_ENDIAN
|
|
assert_equal 8, IO::Buffer::BIG_ENDIAN
|
|
assert_equal 8, IO::Buffer::NETWORK_ENDIAN
|
|
|
|
assert_include [IO::Buffer::LITTLE_ENDIAN, IO::Buffer::BIG_ENDIAN], IO::Buffer::HOST_ENDIAN
|
|
end
|
|
|
|
def test_default_size
|
|
assert_equal IO::Buffer::DEFAULT_SIZE, IO::Buffer.new.size
|
|
end
|
|
|
|
def test_new_internal
|
|
buffer = IO::Buffer.new(1024, IO::Buffer::INTERNAL)
|
|
assert_equal 1024, buffer.size
|
|
refute buffer.external?
|
|
assert buffer.internal?
|
|
refute buffer.mapped?
|
|
end
|
|
|
|
def test_new_mapped
|
|
buffer = IO::Buffer.new(1024, IO::Buffer::MAPPED)
|
|
assert_equal 1024, buffer.size
|
|
refute buffer.external?
|
|
refute buffer.internal?
|
|
assert buffer.mapped?
|
|
end
|
|
|
|
def test_new_readonly
|
|
buffer = IO::Buffer.new(128, IO::Buffer::INTERNAL|IO::Buffer::READONLY)
|
|
assert buffer.readonly?
|
|
|
|
assert_raise IO::Buffer::AccessError do
|
|
buffer.set_string("")
|
|
end
|
|
|
|
assert_raise IO::Buffer::AccessError do
|
|
buffer.set_string("!", 1)
|
|
end
|
|
end
|
|
|
|
def test_file_mapped
|
|
buffer = File.open(__FILE__) {|file| IO::Buffer.map(file, nil, 0, IO::Buffer::READONLY)}
|
|
contents = buffer.get_string
|
|
|
|
assert_include contents, "Hello World"
|
|
assert_equal Encoding::BINARY, contents.encoding
|
|
end
|
|
|
|
def test_file_mapped_invalid
|
|
assert_raise NoMethodError do
|
|
IO::Buffer.map("foobar")
|
|
end
|
|
end
|
|
|
|
def test_string_mapped
|
|
string = "Hello World"
|
|
buffer = IO::Buffer.for(string)
|
|
assert buffer.readonly?
|
|
end
|
|
|
|
def test_string_mapped_frozen
|
|
string = "Hello World".freeze
|
|
buffer = IO::Buffer.for(string)
|
|
assert buffer.readonly?
|
|
end
|
|
|
|
def test_string_mapped_mutable
|
|
string = "Hello World"
|
|
IO::Buffer.for(string) do |buffer|
|
|
refute buffer.readonly?
|
|
|
|
# Cannot modify string as it's locked by the buffer:
|
|
assert_raise RuntimeError do
|
|
string[0] = "h"
|
|
end
|
|
|
|
buffer.set_value(:U8, 0, "h".ord)
|
|
|
|
# Buffer releases it's ownership of the string:
|
|
buffer.free
|
|
|
|
assert_equal "hello World", string
|
|
end
|
|
end
|
|
|
|
def test_non_string
|
|
not_string = Object.new
|
|
|
|
assert_raise TypeError do
|
|
IO::Buffer.for(not_string)
|
|
end
|
|
end
|
|
|
|
def test_resize_mapped
|
|
buffer = IO::Buffer.new
|
|
|
|
buffer.resize(2048)
|
|
assert_equal 2048, buffer.size
|
|
|
|
buffer.resize(4096)
|
|
assert_equal 4096, buffer.size
|
|
end
|
|
|
|
def test_resize_preserve
|
|
message = "Hello World"
|
|
buffer = IO::Buffer.new(1024)
|
|
buffer.set_string(message)
|
|
buffer.resize(2048)
|
|
assert_equal message, buffer.get_string(0, message.bytesize)
|
|
end
|
|
|
|
def test_compare_same_size
|
|
buffer1 = IO::Buffer.new(1)
|
|
assert_equal buffer1, buffer1
|
|
|
|
buffer2 = IO::Buffer.new(1)
|
|
buffer1.set_value(:U8, 0, 0x10)
|
|
buffer2.set_value(:U8, 0, 0x20)
|
|
|
|
assert_negative buffer1 <=> buffer2
|
|
assert_positive buffer2 <=> buffer1
|
|
end
|
|
|
|
def test_compare_different_size
|
|
buffer1 = IO::Buffer.new(3)
|
|
buffer2 = IO::Buffer.new(5)
|
|
|
|
assert_negative buffer1 <=> buffer2
|
|
assert_positive buffer2 <=> buffer1
|
|
end
|
|
|
|
def test_slice
|
|
buffer = IO::Buffer.new(128)
|
|
slice = buffer.slice(8, 32)
|
|
slice.set_string("Hello World")
|
|
assert_equal("Hello World", buffer.get_string(8, 11))
|
|
end
|
|
|
|
def test_slice_bounds
|
|
buffer = IO::Buffer.new(128)
|
|
|
|
assert_raise ArgumentError do
|
|
buffer.slice(128, 10)
|
|
end
|
|
|
|
# assert_raise RuntimeError do
|
|
# pp buffer.slice(-10, 10)
|
|
# end
|
|
end
|
|
|
|
def test_locked
|
|
buffer = IO::Buffer.new(128, IO::Buffer::INTERNAL|IO::Buffer::LOCKED)
|
|
|
|
assert_raise IO::Buffer::LockedError do
|
|
buffer.resize(256)
|
|
end
|
|
|
|
assert_equal 128, buffer.size
|
|
|
|
assert_raise IO::Buffer::LockedError do
|
|
buffer.free
|
|
end
|
|
|
|
assert_equal 128, buffer.size
|
|
end
|
|
|
|
def test_get_string
|
|
message = "Hello World 🤓"
|
|
|
|
buffer = IO::Buffer.new(128)
|
|
buffer.set_string(message)
|
|
|
|
chunk = buffer.get_string(0, message.bytesize, Encoding::UTF_8)
|
|
assert_equal message, chunk
|
|
assert_equal Encoding::UTF_8, chunk.encoding
|
|
|
|
chunk = buffer.get_string(0, message.bytesize, Encoding::BINARY)
|
|
assert_equal Encoding::BINARY, chunk.encoding
|
|
end
|
|
|
|
# We check that values are correctly round tripped.
|
|
RANGES = {
|
|
:U8 => [0, 2**8-1],
|
|
:S8 => [-2**7, 0, 2**7-1],
|
|
|
|
:U16 => [0, 2**16-1],
|
|
:S16 => [-2**15, 0, 2**15-1],
|
|
:u16 => [0, 2**16-1],
|
|
:s16 => [-2**15, 0, 2**15-1],
|
|
|
|
:U32 => [0, 2**32-1],
|
|
:S32 => [-2**31, 0, 2**31-1],
|
|
:u32 => [0, 2**32-1],
|
|
:s32 => [-2**31, 0, 2**31-1],
|
|
|
|
:U64 => [0, 2**64-1],
|
|
:S64 => [-2**63, 0, 2**63-1],
|
|
:u64 => [0, 2**64-1],
|
|
:s64 => [-2**63, 0, 2**63-1],
|
|
|
|
:F32 => [-1.0, 0.0, 0.5, 1.0, 128.0],
|
|
:F64 => [-1.0, 0.0, 0.5, 1.0, 128.0],
|
|
}
|
|
|
|
def test_get_set_primitives
|
|
buffer = IO::Buffer.new(128)
|
|
|
|
RANGES.each do |type, values|
|
|
values.each do |value|
|
|
buffer.set_value(type, 0, value)
|
|
assert_equal value, buffer.get_value(type, 0), "Converting #{value} as #{type}."
|
|
end
|
|
end
|
|
end
|
|
|
|
def test_clear
|
|
buffer = IO::Buffer.new(16)
|
|
buffer.set_string("Hello World!")
|
|
end
|
|
|
|
def test_invalidation
|
|
input, output = IO.pipe
|
|
|
|
# (1) rb_write_internal creates IO::Buffer object,
|
|
buffer = IO::Buffer.new(128)
|
|
|
|
# (2) it is passed to (malicious) scheduler
|
|
# (3) scheduler starts a thread which call system call with the buffer object
|
|
thread = Thread.new{buffer.locked{input.read}}
|
|
|
|
Thread.pass until thread.stop?
|
|
|
|
# (4) scheduler returns
|
|
# (5) rb_write_internal invalidate the buffer object
|
|
assert_raise IO::Buffer::LockedError do
|
|
buffer.free
|
|
end
|
|
|
|
# (6) the system call access the memory area after invalidation
|
|
output.write("Hello World")
|
|
output.close
|
|
thread.join
|
|
|
|
input.close
|
|
end
|
|
|
|
def test_read
|
|
io = Tempfile.new
|
|
io.write("Hello World")
|
|
io.seek(0)
|
|
|
|
buffer = IO::Buffer.new(128)
|
|
buffer.read(io, 5)
|
|
|
|
assert_equal "Hello", buffer.get_string(0, 5)
|
|
ensure
|
|
io.close!
|
|
end
|
|
|
|
def test_write
|
|
io = Tempfile.new
|
|
|
|
buffer = IO::Buffer.new(128)
|
|
buffer.set_string("Hello")
|
|
buffer.write(io, 5)
|
|
|
|
io.seek(0)
|
|
assert_equal "Hello", io.read(5)
|
|
ensure
|
|
io.close!
|
|
end
|
|
|
|
def test_pread
|
|
io = Tempfile.new
|
|
io.write("Hello World")
|
|
io.seek(0)
|
|
|
|
buffer = IO::Buffer.new(128)
|
|
buffer.pread(io, 5, 6)
|
|
|
|
assert_equal "World", buffer.get_string(0, 5)
|
|
assert_equal 0, io.tell
|
|
ensure
|
|
io.close!
|
|
end
|
|
|
|
def test_pwrite
|
|
io = Tempfile.new
|
|
|
|
buffer = IO::Buffer.new(128)
|
|
buffer.set_string("World")
|
|
buffer.pwrite(io, 5, 6)
|
|
|
|
assert_equal 0, io.tell
|
|
|
|
io.seek(6)
|
|
assert_equal "World", io.read(5)
|
|
ensure
|
|
io.close!
|
|
end
|
|
|
|
def test_operators
|
|
source = IO::Buffer.for("1234123412")
|
|
mask = IO::Buffer.for("133\x00")
|
|
|
|
assert_equal IO::Buffer.for("123\x00123\x0012"), (source & mask)
|
|
assert_equal IO::Buffer.for("1334133413"), (source | mask)
|
|
assert_equal IO::Buffer.for("\x00\x01\x004\x00\x01\x004\x00\x01"), (source ^ mask)
|
|
assert_equal IO::Buffer.for("\xce\xcd\xcc\xcb\xce\xcd\xcc\xcb\xce\xcd"), ~source
|
|
end
|
|
|
|
def test_inplace_operators
|
|
source = IO::Buffer.for("1234123412")
|
|
mask = IO::Buffer.for("133\x00")
|
|
|
|
assert_equal IO::Buffer.for("123\x00123\x0012"), source.dup.and!(mask)
|
|
assert_equal IO::Buffer.for("1334133413"), source.dup.or!(mask)
|
|
assert_equal IO::Buffer.for("\x00\x01\x004\x00\x01\x004\x00\x01"), source.dup.xor!(mask)
|
|
assert_equal IO::Buffer.for("\xce\xcd\xcc\xcb\xce\xcd\xcc\xcb\xce\xcd"), source.dup.not!
|
|
end
|
|
end
|