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Contents
require File.dirname(File.join(__rhoGetCurrentDir(), __FILE__)) + '/../../spec_helper'
describe "ARGF.seek" do
before :each do
@file1_name = fixture File.join(__rhoGetCurrentDir(), __FILE__), "file1.txt"
@file2_name = fixture File.join(__rhoGetCurrentDir(), __FILE__), "file2.txt"
@file1 = File.readlines @file1_name
@file2 = File.readlines @file2_name
end
after :each do
ARGF.close
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
Version data entries
83 entries across 83 versions & 1 rubygems