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require File.expand_path('../../../spec_helper', __FILE__)
describe "ARGF.skip" do
before :each do
@file1_name = fixture __FILE__, "file1.txt"
@file2_name = fixture __FILE__, "file2.txt"
@file2 = File.readlines @file2_name
end
it "skips the current file" do
argf [@file1_name, @file2_name] do
@argf.read(1)
@argf.skip
@argf.gets.should == @file2.first
end
end
it "has no effect when called twice in a row" do
argf [@file1_name, @file2_name] do
@argf.read(1)
@argf.skip
@argf.skip
@argf.gets.should == @file2.first
end
end
it "has no effect at end of stream" do
argf [@file1_name, @file2_name] do
@argf.read
@argf.skip
@argf.gets.should == nil
end
end
# This bypasses argf helper because the helper will call argf.file
# which as a side-effect calls argf.file which will initialize
# internals of ARGF enough for this to work.
it "has no effect when nothing has been processed yet" do
lambda { ARGF.class.new(@file1_name).skip }.should_not raise_error
end
end
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