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#
# This file is part of ruby-ffi.
# For licensing, see LICENSE.SPECS
#
require File.expand_path(File.join(File.dirname(__FILE__), "spec_helper"))
describe "Buffer#total" do
[1,2,3].each do |i|
{ :char => 1, :uchar => 1, :short => 2, :ushort => 2, :int => 4,
:uint => 4, :long => FFI::Type::LONG.size, :ulong => FFI::Type::ULONG.size,
:long_long => 8, :ulong_long => 8, :float => 4, :double => 8
}.each_pair do |t, s|
it "Buffer.alloc_in(#{t}, #{i}).total == #{i * s}" do
expect(FFI::Buffer.alloc_in(t, i).total).to eq(i * s)
end
it "Buffer.alloc_out(#{t}, #{i}).total == #{i * s}" do
expect(FFI::Buffer.alloc_out(t, i).total).to eq(i * s)
end
it "Buffer.alloc_inout(#{t}, #{i}).total == #{i * s}" do
expect(FFI::Buffer.alloc_inout(t, i).total).to eq(i * s)
end
end
end
end
describe "Buffer#put_char" do
bufsize = 4
(0..127).each do |i|
(0..bufsize-1).each do |offset|
it "put_char(#{offset}, #{i}).get_char(#{offset}) == #{i}" do
expect(FFI::Buffer.alloc_in(bufsize).put_char(offset, i).get_char(offset)).to eq(i)
end
end
end
end
describe "Buffer#put_uchar" do
bufsize = 4
(0..255).each do |i|
(0..bufsize-1).each do |offset|
it "Buffer.put_uchar(#{offset}, #{i}).get_uchar(#{offset}) == #{i}" do
expect(FFI::Buffer.alloc_in(bufsize).put_uchar(offset, i).get_uchar(offset)).to eq(i)
end
end
end
end
describe "Buffer#put_short" do
bufsize = 4
[0, 1, 128, 32767].each do |i|
(0..bufsize-2).each do |offset|
it "put_short(#{offset}, #{i}).get_short(#{offset}) == #{i}" do
expect(FFI::Buffer.alloc_in(bufsize).put_short(offset, i).get_short(offset)).to eq(i)
end
end
end
end
describe "Buffer#put_ushort" do
bufsize = 4
[ 0, 1, 128, 32767, 65535, 0xfee1, 0xdead, 0xbeef, 0xcafe ].each do |i|
(0..bufsize-2).each do |offset|
it "put_ushort(#{offset}, #{i}).get_ushort(#{offset}) == #{i}" do
expect(FFI::Buffer.alloc_in(bufsize).put_ushort(offset, i).get_ushort(offset)).to eq(i)
end
end
end
end
describe "Buffer#put_int" do
bufsize = 8
[0, 1, 128, 32767, 0x7ffffff ].each do |i|
(0..bufsize-4).each do |offset|
it "put_int(#{offset}, #{i}).get_int(#{offset}) == #{i}" do
expect(FFI::Buffer.alloc_in(bufsize).put_int(offset, i).get_int(offset)).to eq(i)
end
end
end
end
describe "Buffer#put_uint" do
bufsize = 8
[ 0, 1, 128, 32767, 65535, 0xfee1dead, 0xcafebabe, 0xffffffff ].each do |i|
(0..bufsize-4).each do |offset|
it "put_uint(#{offset}, #{i}).get_uint(#{offset}) == #{i}" do
expect(FFI::Buffer.alloc_in(bufsize).put_uint(offset, i).get_uint(offset)).to eq(i)
end
end
end
end
describe "Buffer#put_long" do
bufsize = 16
[0, 1, 128, 32767, 0x7ffffff ].each do |i|
(0..bufsize-FFI::Type::LONG.size).each do |offset|
it "put_long(#{offset}, #{i}).get_long(#{offset}) == #{i}" do
expect(FFI::Buffer.alloc_in(bufsize).put_long(offset, i).get_long(offset)).to eq(i)
end
end
end
end
describe "Buffer#put_ulong" do
bufsize = 16
[ 0, 1, 128, 32767, 65535, 0xfee1dead, 0xcafebabe, 0xffffffff ].each do |i|
(0..bufsize-FFI::Type::LONG.size).each do |offset|
it "put_ulong(#{offset}, #{i}).get_ulong(#{offset}) == #{i}" do
expect(FFI::Buffer.alloc_in(bufsize).put_ulong(offset, i).get_ulong(offset)).to eq(i)
end
end
end
end
describe "Buffer#put_long_long" do
bufsize = 16
[0, 1, 128, 32767, 0x7ffffffffffffff ].each do |i|
(0..bufsize-8).each do |offset|
it "put_long_long(#{offset}, #{i}).get_long_long(#{offset}) == #{i}" do
expect(FFI::Buffer.alloc_in(bufsize).put_long_long(offset, i).get_long_long(offset)).to eq(i)
end
end
end
end
describe "Buffer#put_ulong_long" do
bufsize = 16
[ 0, 1, 128, 32767, 65535, 0xdeadcafebabe, 0x7fffffffffffffff ].each do |i|
(0..bufsize-8).each do |offset|
it "put_ulong_long(#{offset}, #{i}).get_ulong_long(#{offset}) == #{i}" do
expect(FFI::Buffer.alloc_in(bufsize).put_ulong_long(offset, i).get_ulong_long(offset)).to eq(i)
end
end
end
end
describe "Reading/Writing binary strings" do
it "Buffer#write_bytes and read_bytes" do
str = "hello\0world"
buf = FFI::Buffer.new 11
buf.write_bytes(str)
s2 = buf.read_bytes(11)
expect(s2).to eq(str)
end
it "Buffer#put_bytes" do
str = "hello\0world"
buf = FFI::Buffer.new 1024
buf.put_bytes(0, str);
s2 = buf.get_bytes(0, 11);
expect(s2).to eq(str)
end
it "Buffer#put_bytes with index and length" do
str = "hello\0world"
buf = FFI::Buffer.new 1024
buf.put_bytes(0, str, 5, 6);
s2 = buf.get_bytes(0, 6);
expect(s2).to eq(str[5..-1])
end
it "Buffer#put_bytes with only index" do
str = "hello\0world"
buf = FFI::Buffer.new 1024
buf.put_bytes(0, str, 5);
s2 = buf.get_bytes(0, 6);
expect(s2).to eq(str[5..-1])
end
it "Buffer#put_bytes with index > str.length" do
str = "hello\0world"
buf = FFI::Buffer.new 1024
expect { buf.put_bytes(0, str, 12); }.to raise_error(IndexError)
end
it "Buffer#put_bytes with length > str.length" do
str = "hello\0world"
buf = FFI::Buffer.new 1024
expect { buf.put_bytes(0, str, 0, 12); }.to raise_error(RangeError)
end
it "Buffer#put_bytes with negative index" do
str = "hello\0world"
buf = FFI::Buffer.new 1024
expect { buf.put_bytes(0, str, -1, 12); }.to raise_error(RangeError)
end
it "Buffer#write_bytes" do
str = "hello\0world"
buf = FFI::Buffer.new 1024
buf.write_bytes(str)
s2 = buf.get_bytes(0, 11)
expect(s2).to eq(str)
end
it "Buffer#write_bytes with index and length" do
str = "hello\0world"
buf = FFI::Buffer.new 1024
buf.write_bytes(str, 5, 6)
s2 = buf.get_bytes(0, 6)
expect(s2).to eq(str[5..-1])
end
it "Buffer#write_bytes with only index" do
str = "hello\0world"
buf = FFI::Buffer.new 1024
buf.write_bytes(str, 5)
s2 = buf.get_bytes(0, 6)
expect(s2).to eq(str[5..-1])
end
it "Buffer#write_bytes with index > str.length" do
str = "hello\0world"
buf = FFI::Buffer.new 1024
expect { buf.write_bytes(str, 12) }.to raise_error(IndexError)
end
it "Buffer#put_bytes with length > str.length" do
str = "hello\0world"
buf = FFI::Buffer.new 1024
expect { buf.put_bytes(0, str, 0, 12) }.to raise_error(RangeError)
end
it "Buffer#write_bytes with negative index" do
str = "hello\0world"
buf = FFI::Buffer.new 1024
expect { buf.write_bytes(str, -1, 12) }.to raise_error(RangeError)
end
end
describe "Reading/Writing ascii strings" do
it "Buffer#put_string with string containing zero byte" do
str = "hello\0world"
buf = FFI::Buffer.new 1024
buf.put_string(0, str);
s2 = buf.get_bytes(0, 11);
expect(s2).to eq(str)
end
it "Buffer#get_string with string containing zero byte" do
str = "hello\0world"
buf = FFI::Buffer.new 1024
buf.put_bytes(0, str);
s2 = buf.get_string(0, 11);
expect(s2).to eq("hello")
end
it "Buffer#put_string without length should NUL terminate" do
str = "hello"
buf = FFI::Buffer.new 1024
buf.put_string(0, str);
s2 = buf.get_bytes(0, 6);
expect(s2).to eq("hello\0")
end
end
describe "Buffer#put_pointer" do
it "put_pointer(0, p).get_pointer(0) == p" do
p = FFI::MemoryPointer.new :ulong_long
p.put_uint(0, 0xdeadbeef)
buf = FFI::Buffer.alloc_inout 8
p2 = buf.put_pointer(0, p).get_pointer(0)
expect(p2).not_to be_nil
expect(p2).to eq(p)
expect(p2.get_uint(0)).to eq(0xdeadbeef)
end
end
describe "Buffer#size" do
it "should return size" do
buf = FFI::Buffer.new 14
expect(buf.size).to eq(14)
end
end
describe "Buffer#initialize" do
it "with block should execute block" do
block_executed = false
FFI::Buffer.new(:pointer) do |ptr|
block_executed = true
end
expect(block_executed).to be true
end
end
describe "Buffer#memsize_of" do
it "has a memsize function", skip: RUBY_ENGINE != "ruby" do
base_size = ObjectSpace.memsize_of(Object.new)
buf = FFI::Buffer.new 14
size = ObjectSpace.memsize_of(buf)
expect(size).to be > base_size
end
end
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