Capybara -- how to check for content containing a line return

Say that my HTML outputs...

<p>foo<p>...

...and it's important to check that 'foo' is the last text in the line.

What's the quickest way to check for the line return using Capybara?

Then I should see "foo\n"

is not working for me.

The error is:

expected #has_content?("Cached Slug: foo\\n") to return true, got false (RSpec::Expectations::Expe开发者_Go百科ctationNotMetError)

The following works, but of course doesn't check for the line return:

Then I should see "foo"

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Have you tried

Then I should see "foo
"