diff --git a/backend/data/sample-data/example.edn b/backend/data/sample-data/example.edn
new file mode 100644
index 0000000..cfd4e51
--- /dev/null
+++ b/backend/data/sample-data/example.edn
@@ -0,0 +1,10 @@
+({:accessible false, :note ""}
+ {:accessible false, :note "y"}
+ {:accessible true, :note "74"}
+ {:accessible nil, :note "B0"}
+ {:accessible false, :note "20D"}
+ {:accessible false, :note ""}
+ {:accessible false, :note "R5nb"}
+ {:accessible true, :note "hkUGJ8"}
+ {:accessible true, :note "01pd"}
+ {:accessible false, :note ""})
diff --git a/backend/project.clj b/backend/project.clj
index 6ff84e5..439430b 100644
--- a/backend/project.clj
+++ b/backend/project.clj
@@ -36,6 +36,8 @@
                  [org.clojure/tools.logging "1.2.4"]
                  [org.slf4j/slf4j-api "2.0.0-alpha6"]
                  [org.slf4j/slf4j-simple "2.0.0-alpha6"]
+                 ;; testing
+                 [org.clojure/test.check "0.9.0"]
                 ]
   :main beherbergung.webserver.state
   :profiles {:dev {:dependencies [;; helpers for testing
diff --git a/backend/src/beherbergung/resolver/root/ngo/get_offers.clj b/backend/src/beherbergung/resolver/root/ngo/get_offers.clj
index 2edd238..b26da08 100644
--- a/backend/src/beherbergung/resolver/root/ngo/get_offers.clj
+++ b/backend/src/beherbergung/resolver/root/ngo/get_offers.clj
@@ -5,13 +5,17 @@
             [beherbergung.config.state :refer [env]]
             [beherbergung.model.auth :as auth]
             [beherbergung.model.ngo :as ngo]
-            [clojure.edn]))
+            [clojure.edn]
+            [clojure.spec.gen.alpha :as gen]
+            [beherbergung.db.export :refer [write-edn]]))
 
 (defn JaNein->bool [JaNein]
   ({"Ja" true "Nein" false} JaNein))
 
-(def mapping {:accessible #(JaNein->bool (get % "Ist die Unterkunft rollstuhlgerecht?"))
+#_(def mapping {:accessible #(JaNein->bool (get % "Ist die Unterkunft rollstuhlgerecht?"))
               :note "Nachricht"})
+(def mapping {:accessible :accessible
+              :note :note})
 
 (defn unify
   [offers]
@@ -25,14 +29,21 @@
                                            (into {}))))]
        (map (mapping->fn mapping) offers)))
 
-(s/def ::accessible (s/nilable t/boolean))
-(s/def ::note (s/nilable t/string))
-(s/def ::offer (s/keys :opt-un [::accessible ::note]))
+(def t_boolean (s/with-gen t/boolean #(s/gen boolean?)))
+(def t_string (s/with-gen t/string #(s/gen string?)))
+(s/def ::accessible (s/nilable t_boolean))
+(s/def ::note (s/nilable t_string))
+(s/def ::offer (s/keys :req-un [::accessible ::note]))
+
+(comment
+  (write-edn "./data/sample-data/example.edn"
+             (gen/sample (s/gen ::offer))))
 
 (s/fdef get_offers
         :args (s/tuple map? (s/keys :req-un [::auth/auth]) map? map?)
         :ret (s/nilable (s/* ::offer)))
 
+
 (defn get_offers
   "The offers that are visible for the ngo, belonging to the login"
   [_node opt ctx _info]
@@ -40,6 +51,8 @@
         [ngo:id] (auth+role->entity ctx (:auth opt) ::ngo/record)]
        (when ngo:id
          ;; TODO: take it from the db and filter it by visibility to the ngo
-         (unify (clojure.edn/read-string (slurp (:import-file env)))))))
+         (if (:import-file env)
+             (unify (clojure.edn/read-string (slurp (:import-file env))))
+             (gen/sample (s/gen ::offer))))))
 
 (s/def ::get_offers (t/resolver #'get_offers))
diff --git a/backend/src/config.edn b/backend/src/config.edn
index a000945..170f40c 100644
--- a/backend/src/config.edn
+++ b/backend/src/config.edn
@@ -10,7 +10,7 @@
  :db-export-prefix "./data/export/"
  :db-validate true
 
- :import-file nil
+ :import-file "./data/sample-data/example.edn"
 
  ;:mail-host ""
  ;:mail-user ""
diff --git a/backend/test/beherbergung/resolver/ngo/get_offers_test.clj b/backend/test/beherbergung/resolver/ngo/get_offers_test.clj
index 3a2fd7c..1653429 100644
--- a/backend/test/beherbergung/resolver/ngo/get_offers_test.clj
+++ b/backend/test/beherbergung/resolver/ngo/get_offers_test.clj
@@ -16,10 +16,9 @@
 
 (deftest correct-login
   (let [offers (get_offers {:auth {:mail mail :password password}})]
-       (is (= 110 (count offers)))  ;; TODO: we need a test dataset that can be published (generated)
-       (is (= {:accessible true
-               :note "füg"}
-              (first offers)))))
+       (is (= 10 (count offers)))  ;; 10 is the default sample size of gen/sample
+       (is (= {:accessible true, :note "hkUGJ8"}
+              (nth offers 7)))))  ;; picked one of the random generated datasets that contains not so many trivial values
 
 (deftest wrong-login
   (let [offers (get_offers {:auth {:mail mail :password "wrong"}})]