2018-11-08 19:23:39 +05:30
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require 'fast_spec_helper'
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2018-03-27 19:54:05 +05:30
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describe Gitlab::Ci::Pipeline::Expression::Parser do
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describe '#tree' do
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context 'when using operators' do
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it 'returns a reverse descent parse tree' do
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expect(described_class.seed('$VAR1 == "123" == $VAR2').tree)
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.to be_a Gitlab::Ci::Pipeline::Expression::Lexeme::Equals
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end
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end
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context 'when using a single token' do
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it 'returns a single token instance' do
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expect(described_class.seed('$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 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 be_a Gitlab::Ci::Pipeline::Expression::Lexeme::Null
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end
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end
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end
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end
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