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require 'spec_helper'
describe Gitlab::Ci::Pipeline::Expression::Lexeme::String do
describe '.build' do
it 'creates a new instance of the token' do
expect(described_class.build('"my string"'))
.to be_a(described_class)
end
end
describe '.type' do
it 'is a value lexeme' do
expect(described_class.type).to eq :value
end
end
describe '.scan' do
context 'when using double quotes' do
it 'correctly identifies string token' do
scanner = StringScanner.new('"some string"')
token = described_class.scan(scanner)
expect(token).not_to be_nil
expect(token.build.evaluate).to eq 'some string'
end
end
context 'when using single quotes' do
it 'correctly identifies string token' do
scanner = StringScanner.new("'some string 2'")
token = described_class.scan(scanner)
expect(token).not_to be_nil
expect(token.build.evaluate).to eq 'some string 2'
end
end
context 'when there are mixed quotes in the string' do
it 'is a greedy scanner for double quotes' do
scanner = StringScanner.new('"some string" "and another one"')
token = described_class.scan(scanner)
expect(token).not_to be_nil
expect(token.build.evaluate).to eq 'some string'
end
it 'is a greedy scanner for single quotes' do
scanner = StringScanner.new("'some string' 'and another one'")
token = described_class.scan(scanner)
expect(token).not_to be_nil
expect(token.build.evaluate).to eq 'some string'
end
it 'allows to use single quotes inside double quotes' do
scanner = StringScanner.new(%("some ' string"))
token = described_class.scan(scanner)
expect(token).not_to be_nil
expect(token.build.evaluate).to eq "some ' string"
end
it 'allow to use double quotes inside single quotes' do
scanner = StringScanner.new(%('some " string'))
token = described_class.scan(scanner)
expect(token).not_to be_nil
expect(token.build.evaluate).to eq 'some " string'
end
it 'allows to use an empty string inside single quotes' do
scanner = StringScanner.new(%(''))
token = described_class.scan(scanner)
expect(token.build.evaluate).to eq ''
end
it 'allow to use an empty string inside double quotes' do
scanner = StringScanner.new(%(""))
token = described_class.scan(scanner)
expect(token.build.evaluate).to eq ''
end
end
end
describe '#evaluate' do
it 'returns string value if it is present' do
string = described_class.new('my string')
expect(string.evaluate).to eq 'my string'
end
it 'returns an empty string if it is empty' do
string = described_class.new('')
expect(string.evaluate).to eq ''
end
end
end
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