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# frozen_string_literal: true
require 'fast_spec_helper'
RSpec.describe Gitlab::Ci::Config::Interpolation::Functions::ExpandVars, feature_category: :pipeline_composition do
let(:variables) do
Gitlab::Ci::Variables::Collection.new([
{ key: 'VAR1', value: 'value1', masked: false },
{ key: 'VAR2', value: 'value2', masked: false },
{ key: 'NESTED_VAR', value: '$MY_VAR', masked: false },
{ key: 'MASKED_VAR', value: 'masked', masked: true }
])
end
let(:function_expression) { 'expand_vars' }
let(:ctx) { Gitlab::Ci::Config::Interpolation::Context.new({}, variables: variables) }
subject(:function) { described_class.new(function_expression, ctx) }
describe '#execute' do
let(:input_value) { '$VAR1' }
subject(:execute) { function.execute(input_value) }
it 'expands the variable' do
expect(execute).to eq('value1')
expect(function).to be_valid
end
context 'when the variable contains another variable' do
let(:input_value) { '$NESTED_VAR' }
it 'does not expand the inner variable' do
expect(execute).to eq('$MY_VAR')
expect(function).to be_valid
end
end
context 'when the variable is masked' do
let(:input_value) { '$MASKED_VAR' }
it 'returns an error' do
expect(execute).to be_nil
expect(function).not_to be_valid
expect(function.errors).to contain_exactly(
'error in `expand_vars` function: variable expansion error: masked variables cannot be expanded'
)
end
end
context 'when the variable is unknown' do
let(:input_value) { '$UNKNOWN_VAR' }
it 'does not expand the variable' do
expect(execute).to eq('$UNKNOWN_VAR')
expect(function).to be_valid
end
end
context 'when there are multiple variables' do
let(:input_value) { '${VAR1} $VAR2 %VAR1%' }
it 'expands the variables' do
expect(execute).to eq('value1 value2 value1')
expect(function).to be_valid
end
end
context 'when the input is not a string' do
let(:input_value) { 100 }
it 'returns an error' do
expect(execute).to be_nil
expect(function).not_to be_valid
expect(function.errors).to contain_exactly(
'error in `expand_vars` function: invalid input type: expand_vars can only be used with string inputs'
)
end
end
end
describe '.matches?' do
it 'matches exactly the expand_vars function with no arguments' do
expect(described_class.matches?('expand_vars')).to be_truthy
expect(described_class.matches?('expand_vars()')).to be_falsey
expect(described_class.matches?('expand_vars(1)')).to be_falsey
expect(described_class.matches?('unknown')).to be_falsey
end
end
end
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