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require 'spec_helper'
require 'mspec/guards'
require 'mspec/helpers'
describe Object, "#argf" do
before :each do
@saved_argv = ARGV.dup
@argv = [__FILE__]
end
it "sets @argf to an instance of ARGF.class with the given argv" do
argf @argv do
@argf.should be_an_instance_of ARGF.class
@argf.filename.should == @argv.first
end
@argf.should be_nil
end
it "does not alter ARGV nor ARGF" do
argf @argv do
end
ARGV.should == @saved_argv
ARGF.argv.should == @saved_argv
end
it "does not close STDIN" do
argf ['-'] do
end
STDIN.should_not be_closed
end
it "disallows nested calls" do
argf @argv do
lambda { argf @argv }.should raise_error
end
end
end
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