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Contents
require 'rdf/spec'
RSpec.shared_examples 'an RDF::Transactable' do
include RDF::Spec::Matchers
let(:statements) { @rdf_transactable_iv_statements = RDF::Spec.quads }
before do
raise '`transactable` must be set with `let(:transactable)`' unless
defined? transactable
end
subject { transactable }
describe "#transaction" do
it 'gives an immutable transaction' do
expect { subject.transaction { insert([]) } }.to raise_error TypeError
end
it 'commits a successful transaction' do
statement = RDF::Statement(RDF::URI('http://example.com/s'),
RDF.type,
RDF::URI('http://example.com/o'))
expect(subject).to receive(:commit_transaction).and_call_original
expect do
subject.transaction(mutable: true) { insert(statement) }
end.to change { subject.statements }.to include(statement)
end
it 'rolls back a failed transaction' do
original_contents = subject.statements
expect(subject).to receive(:rollback_transaction).and_call_original
expect do
subject.transaction(mutable: true) do
delete(*statements)
raise 'my error'
end
end.to raise_error RuntimeError
expect(subject.statements).to contain_exactly(*original_contents)
end
context 'without block given' do
it 'returns a transaction' do
expect(subject.transaction).to be_a RDF::Transaction
end
it 'the returned transaction is live' do
tx = subject.transaction(mutable: true)
tx.insert(RDF::Statement(:s, RDF.type, :o))
expect { tx.execute }.not_to raise_error
end
end
end
end
Version data entries
5 entries across 5 versions & 1 rubygems