Check if String contains substring in clojure

Question

I need to check if a java String contains a substring in my tests.

This doesn't work because java strings are not collections:

(deftest test_8     (testing "get page from sputnik"         (let [             band "Isis"             page (get-sputnikpage-for-artist band)             ]             (is (contains? band "Isis")))));does NOT work 

Is there a way to convert java strings into collections? Or can I check for substring occurences in other ways?

Answer 1

The easiest way is to use the contains method from java.lang.String:

(.contains "The Band Named Isis" "Isis")

=> true

You can also do it with regular expressions, e.g.

(re-find #"Isis" "The Band Named Isis") 

=> "Isis"

(re-find #"Osiris" "The Band Named Isis") 

=> nil

If you need your result to be true or false, you can wrap it in boolean:

(boolean (re-find #"Osiris" "The Band Named Isis"))

=> false