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RSpec.describe Marshal, 'extensions' do
# An object that raises when code attempts to dup it.
#
# Because we manipulate the internals of RSpec::Mocks.space below, we need
# an object that simply blows up when #dup is called without using any
# partial mocking or stubbing from rspec-mocks itself.
class UndupableObject
def dup
raise NotImplementedError
end
end
describe '#dump' do
context 'when rspec-mocks has been fully initialized' do
include_context "with monkey-patched marshal"
it 'duplicates objects with stubbed or mocked implementations before serialization' do
obj = double(:foo => "bar")
serialized = Marshal.dump(obj)
expect(Marshal.load(serialized)).to be_an(obj.class)
end
it 'does not duplicate other objects before serialization' do
obj = UndupableObject.new
serialized = Marshal.dump(obj)
expect(Marshal.load(serialized)).to be_an(UndupableObject)
end
it 'does not duplicate nil before serialization' do
serialized = Marshal.dump(nil)
expect(Marshal.load(serialized)).to be_nil
end
specify 'applying and unapplying patch is idempotent' do
obj = double(:foo => "bar")
config = RSpec::Mocks.configuration
config.patch_marshal_to_support_partial_doubles = true
config.patch_marshal_to_support_partial_doubles = true
serialized = Marshal.dump(obj)
expect(Marshal.load(serialized)).to be_an(obj.class)
config.patch_marshal_to_support_partial_doubles = false
config.patch_marshal_to_support_partial_doubles = false
expect { Marshal.dump(obj) }.to raise_error(TypeError)
end
end
context 'outside the per-test lifecycle' do
def outside_per_test_lifecycle
RSpec::Mocks.teardown
yield
ensure
RSpec::Mocks.setup
end
it 'does not duplicate the object before serialization' do
obj = UndupableObject.new
outside_per_test_lifecycle do
serialized = Marshal.dump(obj)
expect(Marshal.load(serialized)).to be_an(UndupableObject)
end
end
end
end
end
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