Current File : //opt/cpanel/ea-ruby27/src/passenger-release-6.0.23/test/ruby/utils/strscan_spec.rb
require File.expand_path(File.dirname(__FILE__) + '/../spec_helper')
PhusionPassenger.require_passenger_lib 'utils/strscan'
module PhusionPassenger
describe Utils::StringScanner do
def new_scanner(data)
Utils::StringScanner.new(data)
end
specify '#pos is initially 0' do
scanner = new_scanner('ab')
expect(scanner.pos).to eq(0)
end
specify '#matched is initially nil' do
scanner = new_scanner('ab')
expect(scanner.matched).to be_nil
end
describe '#getch' do
it 'gets the next character and increments pos' do
scanner = new_scanner('ab')
expect(scanner.getch).to eq('a')
expect(scanner.matched).to eq('a')
expect(scanner.pos).to eq(1)
expect(scanner.getch).to eq('b')
expect(scanner.matched).to eq('b')
expect(scanner.pos).to eq(2)
end
specify 'when data is empty, it returns nil and does not increment pos' do
scanner = new_scanner('')
expect(scanner.getch).to be_nil
expect(scanner.matched).to be_nil
expect(scanner.pos).to eq(0)
end
specify 'upon reaching EOS, it returns nil and does not increment pos' do
scanner = new_scanner('a')
scanner.getch
expect(scanner.getch).to be_nil
expect(scanner.matched).to be_nil
expect(scanner.pos).to eq(1)
end
end
describe '#scan' do
describe 'if the pattern matches at the current pos' do
it 'returns the match and increments pos' do
scanner = new_scanner('aaaax')
expect(scanner.scan(/a+/)).to eq('aaaa')
expect(scanner.matched).to eq('aaaa')
expect(scanner.pos).to eq(4)
expect(scanner.scan(/x+/)).to eq('x')
expect(scanner.matched).to eq('x')
expect(scanner.pos).to eq(5)
end
end
describe 'if the pattern does not match at the current pos' do
it 'returns nil and does not increment pos' do
scanner = new_scanner('aaaax')
expect(scanner.scan(/x+/)).to be_nil
expect(scanner.matched).to be_nil
expect(scanner.pos).to eq(0)
scanner.scan(/a+/)
expect(scanner.scan(/y+/)).to be_nil
expect(scanner.matched).to be_nil
expect(scanner.pos).to eq(4)
end
end
it 'scans across newlines' do
scanner = new_scanner("a\na")
expect(scanner.scan(/[a\s]+/)).to eq("a\na")
expect(scanner.matched).to eq("a\na")
expect(scanner.pos).to eq(3)
end
end
end
end
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