1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
|
#
# This file is part of ruby-ffi.
#
# This code is free software: you can redistribute it and/or modify it under
# the terms of the GNU Lesser General Public License version 3 only, as
# published by the Free Software Foundation.
#
# This code is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
# FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License
# version 3 for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# version 3 along with this work. If not, see <http://www.gnu.org/licenses/>.
#
require File.expand_path(File.join(File.dirname(__FILE__), "spec_helper"))
describe "Pointer#dup" do
it "clone should be independent" do
p1 = FFI::MemoryPointer.new(:char, 1024)
p1.put_string(0, "test123");
p2 = p1.dup
p1.put_string(0, "deadbeef")
p2.get_string(0).should eq "test123"
end
it "sliced pointer can be cloned" do
p1 = FFI::MemoryPointer.new(:char, 1024)
p1.put_string(0, "test123");
p2 = p1[1].dup
# first char will be excised
p2.get_string(0).should eq "est123"
p1.get_string(0).should eq "test123"
end
it "sliced pointer when cloned is independent" do
p1 = FFI::MemoryPointer.new(:char, 1024)
p1.put_string(0, "test123");
p2 = p1[1].dup
p1.put_string(0, "deadbeef")
# first char will be excised
p2.get_string(0).should eq "est123"
end
end
describe "Struct#dup" do
it "clone should be independent" do
s = Class.new(FFI::Struct) do
layout :i, :int
end
s1 = s.new
s1[:i] = 0x12345
s2 = s1.dup
s1[:i] = 0x98765
s2[:i].should eq 0x12345
s1[:i].should eq 0x98765
end
end
|
