expect(@link.url_address == 'abc').to be_true

但url_address可能在abc之后有其他文本,所以我正在尝试

expect(@link.url_address =~ 'abc').to be_true

但我得到了

Failure/Error: expect(@link.url_address =~ /abc/).to be_true
   expected  to respond to `true?`

我也试过了

expect(@link.url_address).to =~ /abc/

但我明白了

Failure/Error: expect(@link.url_address).to =~ /abc/
 ArgumentError:
   The expect Syntax does not support operator matchers,so you must pass a matcher to `#to`.