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
|
require File.expand_path('../../../spec_helper', __FILE__)
describe "ARGF.seek" do
before :each do
@file1_name = fixture __FILE__, "file1.txt"
@file2_name = fixture __FILE__, "file2.txt"
@file1 = File.readlines @file1_name
@file2 = File.readlines @file2_name
end
after :each do
ARGF.close unless ARGF.closed?
end
it "sets the absolute position relative to beginning of file" do
argv [@file1_name, @file2_name] do
ARGF.seek 2
ARGF.gets.should == @file1.first[2..-1]
ARGF.seek @file1.first.size
ARGF.gets.should == @file1.last
ARGF.seek 0, IO::SEEK_END
ARGF.gets.should == @file2.first
end
end
it "sets the position relative to current position in file" do
argv [@file1_name, @file2_name] do
ARGF.seek 0, IO::SEEK_CUR
ARGF.gets.should == @file1.first
ARGF.seek -@file1.first.size+2, IO::SEEK_CUR
ARGF.gets.should == @file1.first[2..-1]
ARGF.seek 1, IO::SEEK_CUR
ARGF.gets.should == @file1.last[1..-1]
ARGF.seek 3, IO::SEEK_CUR
ARGF.gets.should == @file2.first
ARGF.seek @file1.last.size, IO::SEEK_CUR
ARGF.gets.should == nil
end
end
it "sets the absolute position relative to end of file" do
argv [@file1_name, @file2_name] do
ARGF.seek -@file1.first.size-@file1.last.size, IO::SEEK_END
ARGF.gets.should == @file1.first
ARGF.seek -6, IO::SEEK_END
ARGF.gets.should == @file1.last[-6..-1]
ARGF.seek -4, IO::SEEK_END
ARGF.gets.should == @file1.last[4..-1]
ARGF.gets.should == @file2.first
ARGF.seek -6, IO::SEEK_END
ARGF.gets.should == @file2.last[-6..-1]
end
end
it "takes at least one argument (offset)" do
lambda { ARGF.seek }.should raise_error(ArgumentError)
end
end
|
