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describe QA::Runtime::Release do
context 'when release version has extension strategy' do
subject { described_class.new('CE') }
let(:strategy) { spy('CE::Strategy') }
before do
stub_const('QA::CE::Strategy', strategy)
stub_const('QA::EE::Strategy', strategy)
end
describe '#has_strategy?' do
it 'return true' do
expect(subject.has_strategy?).to be true
end
end
describe '#strategy' do
it 'return the strategy constant' do
expect(subject.strategy).to eq QA::CE::Strategy
end
end
describe 'delegated class methods' do
it 'delegates all calls to strategy class' do
described_class.some_method(1, 2)
expect(strategy).to have_received(:some_method)
.with(1, 2)
end
end
end
context 'when release version does not have extension strategy' do
subject { described_class.new('CE') }
before do
hide_const('QA::CE::Strategy')
hide_const('QA::EE::Strategy')
end
describe '#has_strategy?' do
it 'returns false' do
expect(subject.has_strategy?).to be false
end
end
describe '#strategy' do
it 'raises error' do
expect { subject.strategy }.to raise_error(NameError)
end
end
describe 'delegated class methods' do
it 'behaves like a null object and does nothing' do
expect { described_class.some_method(2, 3) }.not_to raise_error
end
end
end
context 'when release version is invalid or unspecified' do
describe '#new' do
it 'raises an exception' do
expect { described_class.new(nil) }
.to raise_error(described_class::UnspecifiedReleaseError)
end
end
end
end
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