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# frozen_string_literal: true
require 'spec_helper'
RSpec.describe('passing options to scan') do
def expect_type_tokens(tokens, type_tokens)
expect(tokens.map { |type, token, *| [type, token] }).to eq(type_tokens)
end
it 'raises if scanning from a Regexp and options are passed' do
expect { RS.scan(/a+/, options: ::Regexp::EXTENDED) }.to raise_error(
ArgumentError,
'options cannot be supplied unless scanning a String'
)
end
it 'sets free_spacing based on options if scanning from a String' do
expect_type_tokens(
RS.scan('a+#c', options: ::Regexp::MULTILINE | ::Regexp::EXTENDED),
[
%i[literal literal],
%i[quantifier one_or_more],
%i[free_space comment]
]
)
end
it 'sets encoding based on options if scanning from a String' do
expect_type_tokens(
RS.scan('\x94\x95', options: ::Regexp::NOENCODING),
[
# in non-binary encodings, these would be seen as a single utf8 escape
%i[escape hex],
%i[escape hex],
]
)
end
it 'does not set free_spacing if scanning from a String and passing no options' do
expect_type_tokens(
RS.scan('a+#c'),
[
%i[literal literal],
%i[quantifier one_or_more],
%i[literal literal]
]
)
end
end
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