120 lines
4.8 KiB
Ruby
120 lines
4.8 KiB
Ruby
require 'spec_helper'
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describe Gitlab::Ci::Pipeline::Expression::Lexer do
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let(:token_class) do
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Gitlab::Ci::Pipeline::Expression::Token
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end
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describe '#tokens' do
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it 'returns single value' do
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tokens = described_class.new('$VARIABLE').tokens
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expect(tokens).to be_one
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expect(tokens).to all(be_an_instance_of(token_class))
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end
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it 'does ignore whitespace characters' do
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tokens = described_class.new("\t$VARIABLE ").tokens
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expect(tokens).to be_one
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expect(tokens).to all(be_an_instance_of(token_class))
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end
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it 'returns multiple values of the same token' do
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tokens = described_class.new("$VARIABLE1 $VARIABLE2").tokens
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expect(tokens.size).to eq 2
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expect(tokens).to all(be_an_instance_of(token_class))
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end
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it 'returns multiple values with different tokens' do
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tokens = described_class.new('$VARIABLE "text" "value"').tokens
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expect(tokens.size).to eq 3
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expect(tokens.first.value).to eq '$VARIABLE'
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expect(tokens.second.value).to eq '"text"'
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expect(tokens.third.value).to eq '"value"'
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end
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it 'returns tokens and operators' do
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tokens = described_class.new('$VARIABLE == "text"').tokens
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expect(tokens.size).to eq 3
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expect(tokens.first.value).to eq '$VARIABLE'
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expect(tokens.second.value).to eq '=='
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expect(tokens.third.value).to eq '"text"'
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end
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it 'limits statement to specified amount of tokens' do
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lexer = described_class.new("$V1 $V2 $V3 $V4", max_tokens: 3)
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expect { lexer.tokens }
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.to raise_error described_class::SyntaxError
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end
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it 'raises syntax error in case of finding unknown tokens' do
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lexer = described_class.new('$V1 123 $V2')
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expect { lexer.tokens }
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.to raise_error described_class::SyntaxError
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end
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context 'with complex expressions' do
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using RSpec::Parameterized::TableSyntax
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subject { described_class.new(expression).tokens.map(&:value) }
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where(:expression, :tokens) do
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'$PRESENT_VARIABLE =~ /my var/ && $EMPTY_VARIABLE =~ /nope/' | ['$PRESENT_VARIABLE', '=~', '/my var/', '&&', '$EMPTY_VARIABLE', '=~', '/nope/']
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'$EMPTY_VARIABLE == "" && $PRESENT_VARIABLE' | ['$EMPTY_VARIABLE', '==', '""', '&&', '$PRESENT_VARIABLE']
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'$EMPTY_VARIABLE == "" && $PRESENT_VARIABLE != "nope"' | ['$EMPTY_VARIABLE', '==', '""', '&&', '$PRESENT_VARIABLE', '!=', '"nope"']
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'$PRESENT_VARIABLE && $EMPTY_VARIABLE' | ['$PRESENT_VARIABLE', '&&', '$EMPTY_VARIABLE']
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'$PRESENT_VARIABLE =~ /my var/ || $EMPTY_VARIABLE =~ /nope/' | ['$PRESENT_VARIABLE', '=~', '/my var/', '||', '$EMPTY_VARIABLE', '=~', '/nope/']
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'$EMPTY_VARIABLE == "" || $PRESENT_VARIABLE' | ['$EMPTY_VARIABLE', '==', '""', '||', '$PRESENT_VARIABLE']
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'$EMPTY_VARIABLE == "" || $PRESENT_VARIABLE != "nope"' | ['$EMPTY_VARIABLE', '==', '""', '||', '$PRESENT_VARIABLE', '!=', '"nope"']
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'$PRESENT_VARIABLE || $EMPTY_VARIABLE' | ['$PRESENT_VARIABLE', '||', '$EMPTY_VARIABLE']
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'$PRESENT_VARIABLE && null || $EMPTY_VARIABLE == ""' | ['$PRESENT_VARIABLE', '&&', 'null', '||', '$EMPTY_VARIABLE', '==', '""']
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end
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with_them do
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it { is_expected.to eq(tokens) }
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end
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end
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context 'with the ci_variables_complex_expressions feature flag turned off' do
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before do
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stub_feature_flags(ci_variables_complex_expressions: false)
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end
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it 'incorrectly tokenizes conjunctive match statements as one match statement' do
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tokens = described_class.new('$PRESENT_VARIABLE =~ /my var/ && $EMPTY_VARIABLE =~ /nope/').tokens
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expect(tokens.map(&:value)).to eq(['$PRESENT_VARIABLE', '=~', '/my var/ && $EMPTY_VARIABLE =~ /nope/'])
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end
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it 'incorrectly tokenizes disjunctive match statements as one statement' do
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tokens = described_class.new('$PRESENT_VARIABLE =~ /my var/ || $EMPTY_VARIABLE =~ /nope/').tokens
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expect(tokens.map(&:value)).to eq(['$PRESENT_VARIABLE', '=~', '/my var/ || $EMPTY_VARIABLE =~ /nope/'])
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end
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it 'raises an error about && operators' do
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expect { described_class.new('$EMPTY_VARIABLE == "" && $PRESENT_VARIABLE').tokens }
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.to raise_error(Gitlab::Ci::Pipeline::Expression::Lexer::SyntaxError).with_message('Unknown lexeme found!')
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end
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it 'raises an error about || operators' do
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expect { described_class.new('$EMPTY_VARIABLE == "" || $PRESENT_VARIABLE').tokens }
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.to raise_error(Gitlab::Ci::Pipeline::Expression::Lexer::SyntaxError).with_message('Unknown lexeme found!')
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end
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end
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end
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describe '#lexemes' do
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it 'returns an array of syntax lexemes' do
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lexer = described_class.new('$VAR "text"')
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expect(lexer.lexemes).to eq %w[variable string]
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end
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end
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end
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