Just removing the line continuation will result in an ArgumentError. You could go to a single line, which seems a bit too long:

````ruby
expect{Wait.while() { true }}.to raise_error(Watir::Wait::TimeoutError, "timed out after 1 seconds")
````

or do

````ruby
expect{Wait.while() { true }}.to raise_error(Watir::Wait::TimeoutError, 
"timed out after 1 seconds")
````

Did you have a preference on which of the three is the best?