diff --git a/test/helm-dash-test.el b/test/helm-dash-test.el
index e35a916..92b3550 100644
--- a/test/helm-dash-test.el
+++ b/test/helm-dash-test.el
@@ -77,7 +77,6 @@
 	(docset "C++"))
     (should (equal (helm-dash-sub-docset-name-in-pattern pattern docset) "printf"))))
 
-
 ;;;; helm-dash-result-url
 
 (ert-deftest helm-dash-result-url/checks-docset-types ()
@@ -115,6 +114,18 @@
     ;; ignored docset:
     (should-not (member "Man_Pages" docsets))))
 
+;;;; helm-dash-activate-docset
+
+(ert-deftest helm-dash-activate-docset ()
+  (let ((helm-dash-common-docsets '("Redis" "Go" "CSS"))
+	(helm-dash-connections
+	 '(("Redis" "/tmp/.docsets/Redis.docset/Contents/Resources/docSet.dsidx" "DASH")
+	   ("Go" "/tmp/.docsets/Go.docset/Contents/Resources/docSet.dsidx" "DASH")
+	   ("CSS" "/tmp/.docsets/CSS.docset/Contents/Resources/docSet.dsidx" "ZDASH"))))
+    (helm-dash-activate-docset "Clojure")
+    (should (equal'("Clojure" "Redis" "Go" "CSS") helm-dash-common-docsets))
+    (should (equal nil helm-dash-connections))))
+
 (provide 'helm-dash-test)
 
 ;;; helm-dash-test ends here