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# -*- encoding: binary -*-
require_relative '../../spec_helper'
require_relative 'shared/extract_range'
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".dup.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
describe "#[] successive call with a capture group name" do
# https://github.com/ruby/strscan/issues/139
ruby_version_is ""..."3.5" do # Don't run on 3.5.0dev that already contains not released fixes
version_is StringScanner::Version, "3.1.1"..."3.1.3" do # ruby_version_is "3.4.0"..."3.4.3"
it "returns nil" do
s = StringScanner.new("This is a test")
s.getch
s.should.matched?
s[:a].should be_nil
end
end
end
version_is StringScanner::Version, "3.1.3" do # ruby_version_is "3.4.3"
it "raises IndexError" do
s = StringScanner.new("This is a test")
s.getch
s.should.matched?
-> { s[:a] }.should raise_error(IndexError)
end
end
it "returns a matching character when given Integer index" do
s = StringScanner.new("This is a test")
s.getch
s[0].should == "T"
end
# https://github.com/ruby/strscan/issues/135
ruby_version_is ""..."3.5" do # Don't run on 3.5.0dev that already contains not released fixes
version_is StringScanner::Version, "3.1.1"..."3.1.3" do # ruby_version_is "3.4.0"..."3.4.3"
it "ignores the previous matching with Regexp" do
s = StringScanner.new("This is a test")
s.exist?(/(?<a>This)/)
s.should.matched?
s[:a].should == "This"
s.getch
s.should.matched?
s[:a].should be_nil
end
end
end
version_is StringScanner::Version, "3.1.3" do # ruby_version_is "3.4.0"..."3.4.3"
it "ignores the previous matching with Regexp" do
s = StringScanner.new("This is a test")
s.exist?(/(?<a>This)/)
s.should.matched?
s[:a].should == "This"
s.getch
s.should.matched?
-> { s[:a] }.should raise_error(IndexError)
end
end
end
it_behaves_like :extract_range, :getch
end
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