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require 'spec_helper'
describe Gitlab::Ci::Pipeline::Expression::Lexer do
let(:token_class) do
Gitlab::Ci::Pipeline::Expression::Token
end
describe '#tokens' do
it 'tokenss single value' do
tokens = described_class.new('$VARIABLE').tokens
expect(tokens).to be_one
expect(tokens).to all(be_an_instance_of(token_class))
end
it 'does ignore whitespace characters' do
tokens = described_class.new("\t$VARIABLE ").tokens
expect(tokens).to be_one
expect(tokens).to all(be_an_instance_of(token_class))
end
it 'tokenss multiple values of the same token' do
tokens = described_class.new("$VARIABLE1 $VARIABLE2").tokens
expect(tokens.size).to eq 2
expect(tokens).to all(be_an_instance_of(token_class))
end
it 'tokenss multiple values with different tokens' do
tokens = described_class.new('$VARIABLE "text" "value"').tokens
expect(tokens.size).to eq 3
expect(tokens.first.value).to eq '$VARIABLE'
expect(tokens.second.value).to eq '"text"'
expect(tokens.third.value).to eq '"value"'
end
it 'tokenss tokens and operators' do
tokens = described_class.new('$VARIABLE == "text"').tokens
expect(tokens.size).to eq 3
expect(tokens.first.value).to eq '$VARIABLE'
expect(tokens.second.value).to eq '=='
expect(tokens.third.value).to eq '"text"'
end
it 'limits statement to 5 tokens' do
lexer = described_class.new("$V1 $V2 $V3 $V4 $V5 $V6")
expect { lexer.tokens }
.to raise_error described_class::SyntaxError
end
it 'raises syntax error in case of finding unknown tokens' do
lexer = described_class.new('$V1 123 $V2')
expect { lexer.tokens }
.to raise_error described_class::SyntaxError
end
end
describe '#lexemes' do
it 'returns an array of syntax lexemes' do
lexer = described_class.new('$VAR "text"')
expect(lexer.lexemes).to eq %w[variable string]
end
end
end
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