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# -*- encoding: binary -*-
require File.expand_path('../../../spec_helper', __FILE__)
require File.expand_path('../shared/extract_range', __FILE__)
require 'strscan'
describe "StringScanner#getch" do
it "scans one character and returns it" do
s = StringScanner.new('abc')
s.getch.should == "a"
s.getch.should == "b"
s.getch.should == "c"
end
it "is multi-byte character sensitive" do
# Japanese hiragana "A" in EUC-JP
src = "\244\242".force_encoding("euc-jp")
s = StringScanner.new(src)
s.getch.should == src
end
it "returns nil at the end of the string" do
# empty string case
s = StringScanner.new('')
s.getch.should == nil
s.getch.should == nil
# non-empty string case
s = StringScanner.new('a')
s.getch # skip one
s.getch.should == nil
end
it_behaves_like :extract_range, :getch
end
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