Test for parsing ID from stream name
user
```ruby
require_relative '../automated_init'

context "Get ID" do
  test "Is the part of a stream name after the first dash" do
    id = Identifier::UUID.random
    stream_name = "someStream-#{id}"

    stream_id = StreamName.get_id stream_name

    assert(stream_id == id)
  end

  test "Is nil if there is no ID part in the stream name" do
    stream_id = StreamName.get_id 'someStream'
    assert(stream_id.nil?)
  end
end
```
assistant