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Contents
require File.expand_path('../../../spec_helper', __FILE__)
describe "ARGF.rewind" 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
# NOTE: this test assumes that fixtures files have two lines each
it "goes back to beginning of current file" do
argv [@file1_name, @file2_name] do
ARGF.gets;
ARGF.rewind;
ARGF.gets.should == @file1.first
ARGF.gets # finish reading file1
ARGF.gets
ARGF.rewind
ARGF.gets.should == @file2.first
end
end
# This fails on all versions as reported in bug #1693. If it's deemed not to
# be a bug, this guard can be removed
ruby_bug "#1693", "1.8.7.302" do
it "resets ARGF.lineno to 0" do
argv [@file2_name] do
ARGF.lineno = 0
ARGF.gets;
ARGF.lineno.should > 0
ARGF.rewind;
ARGF.lineno.should == 0
end
end
end
it "raises an ArgumentError when end of stream reached" do
argv [@file1_name, @file2_name] do
ARGF.read
lambda { ARGF.rewind }.should raise_error(ArgumentError)
end
end
end
Version data entries
52 entries across 52 versions & 2 rubygems