This conversion is done by Transpec 3.2.2 with the following command:
transpec
* 317 conversions
from: obj.should
to: expect(obj).to
* 160 conversions
from: obj.stub(:message)
to: allow(obj).to receive(:message)
* 100 conversions
from: obj.should_receive(:message)
to: expect(obj).to receive(:message)
* 30 conversions
from: lambda { }.should
to: expect { }.to
* 22 conversions
from: obj.should_not_receive(:message)
to: expect(obj).not_to receive(:message)
* 4 conversions
from: obj.should_not
to: expect(obj).not_to
* 2 conversions
from: == expected
to: eq(expected)
* 1 conversion
from: expect(collection).to have_at_least(n).items
to: expect(collection.size).to be >= n
* 1 conversion
from: obj.unstub(:message)
to: allow(obj).to receive(:message).and_call_original
For more details: https://github.com/yujinakayama/transpec#supported-conversions
