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require 'fast_spec_helper'
describe Gitlab::Ci::Config::Extendable::Entry do
describe '.new' do
context 'when entry key is not included in the context hash' do
it 'raises error' do
expect { described_class.new(:test, something: 'something') }
.to raise_error StandardError, 'Invalid entry key!'
end
end
end
describe '#value' do
it 'reads a hash value from the context' do
entry = described_class.new(:test, test: 'something')
expect(entry.value).to eq 'something'
end
end
describe '#extensible?' do
context 'when entry has inheritance defined' do
it 'is extensible' do
entry = described_class.new(:test, test: { extends: 'something' })
expect(entry).to be_extensible
end
end
context 'when entry does not have inheritance specified' do
it 'is not extensible' do
entry = described_class.new(:test, test: { script: 'something' })
expect(entry).not_to be_extensible
end
end
context 'when entry value is not a hash' do
it 'is not extensible' do
entry = described_class.new(:test, test: 'something')
expect(entry).not_to be_extensible
end
end
end
describe '#extends_keys' do
context 'when entry is extensible' do
it 'returns symbolized extends key value' do
entry = described_class.new(:test, test: { extends: 'something' })
expect(entry.extends_keys).to eq [:something]
end
end
context 'when entry is not extensible' do
it 'returns nil' do
entry = described_class.new(:test, test: 'something')
expect(entry.extends_keys).to be_nil
end
end
end
describe '#ancestors' do
let(:parent) do
described_class.new(:test, test: { extends: 'something' })
end
let(:child) do
described_class.new(:job, { job: { script: 'something' } }, parent)
end
it 'returns ancestors keys' do
expect(child.ancestors).to eq [:test]
end
end
describe '#base_hashes!' do
subject { described_class.new(:test, hash) }
context 'when base hash is not extensible' do
let(:hash) do
{
template: { script: 'rspec' },
test: { extends: 'template' }
}
end
it 'returns unchanged base hashes' do
expect(subject.base_hashes!).to eq([{ script: 'rspec' }])
end
end
context 'when base hash is extensible too' do
let(:hash) do
{
first: { script: 'rspec' },
second: { extends: 'first' },
test: { extends: 'second' }
}
end
it 'extends the base hashes first' do
expect(subject.base_hashes!).to eq([{ extends: 'first', script: 'rspec' }])
end
it 'mutates original context' do
subject.base_hashes!
expect(hash.fetch(:second)).to eq(extends: 'first', script: 'rspec')
end
end
end
describe '#extend!' do
subject { described_class.new(:test, hash) }
context 'when extending a non-hash value' do
let(:hash) do
{
first: 'my value',
test: { extends: 'first' }
}
end
it 'raises an error' do
expect { subject.extend! }
.to raise_error(described_class::InvalidExtensionError,
/invalid base hash/)
end
end
context 'when extending unknown key' do
let(:hash) do
{ test: { extends: 'something' } }
end
it 'raises an error' do
expect { subject.extend! }
.to raise_error(described_class::InvalidExtensionError,
/unknown key/)
end
end
context 'when extending a hash correctly' do
let(:hash) do
{
first: { script: 'my value' },
second: { extends: 'first' },
test: { extends: 'second' }
}
end
let(:result) do
{
first: { script: 'my value' },
second: { extends: 'first', script: 'my value' },
test: { extends: 'second', script: 'my value' }
}
end
it 'returns extended part of the hash' do
expect(subject.extend!).to eq result[:test]
end
it 'mutates original context' do
subject.extend!
expect(hash).to eq result
end
end
context 'when extending multiple hashes correctly' do
let(:hash) do
{
first: { script: 'my value', image: 'ubuntu' },
second: { image: 'alpine' },
test: { extends: %w(first second) }
}
end
let(:result) do
{
first: { script: 'my value', image: 'ubuntu' },
second: { image: 'alpine' },
test: { extends: %w(first second), script: 'my value', image: 'alpine' }
}
end
it 'returns extended part of the hash' do
expect(subject.extend!).to eq result[:test]
end
it 'mutates original context' do
subject.extend!
expect(hash).to eq result
end
end
context 'when hash is not extensible' do
let(:hash) do
{
first: { script: 'my value' },
second: { extends: 'first' },
test: { value: 'something' }
}
end
it 'returns original key value' do
expect(subject.extend!).to eq(value: 'something')
end
it 'does not mutate orignal context' do
original = hash.deep_dup
subject.extend!
expect(hash).to eq original
end
end
context 'when circular depenency gets detected' do
let(:hash) do
{ test: { extends: 'test' } }
end
it 'raises an error' do
expect { subject.extend! }
.to raise_error(described_class::CircularDependencyError,
/circular dependency detected/)
end
end
context 'when nesting level is too deep' do
before do
stub_const("#{described_class}::MAX_NESTING_LEVELS", 0)
end
let(:hash) do
{
first: { script: 'my value' },
second: { extends: 'first' },
test: { extends: 'second' }
}
end
it 'raises an error' do
expect { subject.extend! }
.to raise_error(described_class::NestingTooDeepError)
end
end
end
end
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