70 lines
2.3 KiB
Ruby
70 lines
2.3 KiB
Ruby
# frozen_string_literal: true
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require 'fast_spec_helper'
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RSpec.describe Gitlab::Ci::Pipeline::Expression::Parser do
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describe '#tree' do
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context 'when using two operators' do
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it 'returns a reverse descent parse tree' do
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expect(described_class.seed('$VAR1 == "123"').tree)
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.to be_a Gitlab::Ci::Pipeline::Expression::Lexeme::Equals
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end
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end
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context 'when using three operators' do
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it 'returns a reverse descent parse tree' do
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expect(described_class.seed('$VAR1 == "123" == $VAR2').tree)
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.to be_a Gitlab::Ci::Pipeline::Expression::Lexeme::Equals
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end
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end
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context 'when using a single variable token' do
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it 'returns a single token instance' do
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expect(described_class.seed('$VAR').tree)
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.to be_a Gitlab::Ci::Pipeline::Expression::Lexeme::Variable
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end
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end
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context 'when using a single string token' do
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it 'returns a single token instance' do
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expect(described_class.seed('"some value"').tree)
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.to be_a Gitlab::Ci::Pipeline::Expression::Lexeme::String
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end
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end
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context 'when expression is empty' do
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it 'returns a null token' do
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expect { described_class.seed('').tree }
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.to raise_error Gitlab::Ci::Pipeline::Expression::Parser::ParseError
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end
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end
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context 'when expression is null' do
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it 'returns a null token' do
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expect(described_class.seed('null').tree)
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.to be_a Gitlab::Ci::Pipeline::Expression::Lexeme::Null
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end
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end
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context 'when two value tokens have no operator' do
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it 'raises a parsing error' do
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expect { described_class.seed('$VAR "text"').tree }
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.to raise_error Gitlab::Ci::Pipeline::Expression::Parser::ParseError
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end
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end
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context 'when an operator has no left side' do
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it 'raises an OperatorError' do
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expect { described_class.seed('== "123"').tree }
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.to raise_error Gitlab::Ci::Pipeline::Expression::Lexeme::Operator::OperatorError
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end
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end
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context 'when an operator has no right side' do
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it 'raises an OperatorError' do
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expect { described_class.seed('$VAR ==').tree }
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.to raise_error Gitlab::Ci::Pipeline::Expression::Lexeme::Operator::OperatorError
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end
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end
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end
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end
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