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require 'spec_helper'
describe Gitlab::Ci::Pipeline::Expression::Lexeme::NotEquals do
let(:left) { double('left') }
let(:right) { double('right') }
describe '.build' do
context 'with non-evaluable operands' do
it 'creates a new instance of the token' do
expect { described_class.build('!=', left, right) }
.to raise_error Gitlab::Ci::Pipeline::Expression::Lexeme::Operator::OperatorError
end
end
context 'with evaluable operands' do
it 'creates a new instance of the token' do
allow(left).to receive(:evaluate).and_return('my-string')
allow(right).to receive(:evaluate).and_return('my-string')
expect(described_class.build('!=', left, right))
.to be_a(described_class)
end
end
end
describe '.type' do
it 'is an operator' do
expect(described_class.type).to eq :operator
end
end
describe '.precedence' do
it 'has a precedence' do
expect(described_class.precedence).to be_an Integer
end
end
describe '#evaluate' do
let(:operator) { described_class.new(left, right) }
subject { operator.evaluate }
before do
allow(left).to receive(:evaluate).and_return(left_value)
allow(right).to receive(:evaluate).and_return(right_value)
end
context 'when left and right are equal' do
using RSpec::Parameterized::TableSyntax
where(:left_value, :right_value) do
'string' | 'string'
1 | 1
'' | ''
nil | nil
end
with_them do
it { is_expected.to eq(false) }
end
end
context 'when left and right are not equal' do
where(:left_value, :right_value) do
['one string', 'two string', 1, 2, '', nil, false, true].permutation(2).to_a
end
with_them do
it { is_expected.to eq(true) }
end
end
end
end
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