diff --git a/src/test/cljc/dda/c4k_common/predicate_test.cljc b/src/test/cljc/dda/c4k_common/predicate_test.cljc
index abe2c61..3030bcf 100644
--- a/src/test/cljc/dda/c4k_common/predicate_test.cljc
+++ b/src/test/cljc/dda/c4k_common/predicate_test.cljc
@@ -2,12 +2,51 @@
   (:require
    #?(:clj [clojure.test :refer [deftest is are testing run-tests]]
       :cljs [cljs.test :refer-macros [deftest is are testing run-tests]])
-   [clojure.spec.test.alpha :as st]   
    [dda.c4k-common.predicate :as cut]))
 
-
 (deftest test-bash-env-string?
   (is (true? (cut/bash-env-string? "abcd")))
   (is (false? (cut/bash-env-string? "$abdc")))
   (is (false? (cut/bash-env-string? "\"abdc"))))
 
+(deftest test-fqdn-string?
+  (is (true? (cut/fqdn-string? "abc.test.de")))
+  (is (true? (cut/fqdn-string? "abc.def.fed.cba.abc.def.fed.cba")))
+  (is (true? (cut/fqdn-string? "123.456.de")))
+  (is (false? (cut/fqdn-string? "123.456.789")))
+  (is (false? (cut/fqdn-string? "test&test.de"))))
+
+(deftest test-string-of-separated-by?
+  (is (true? (cut/string-of-separated-by? "abcd" cut/bash-env-string? #":")))
+  (is (true? (cut/string-of-separated-by? "abcd:efgh" cut/bash-env-string? #":")))
+  (is (false? (cut/string-of-separated-by? "abcd:ef$gh" cut/bash-env-string? #":")))
+  (is (true? (cut/string-of-separated-by? "test.de,test-gmbh.de,test-llc.com" cut/fqdn-string? #",")))
+  (is (false? (cut/string-of-separated-by? "test.123,test.de" cut/fqdn-string? #","))))
+
+(deftest test-letsencrypt-issuer?
+  (is (false? (cut/letsencrypt-issuer? "issuer")))
+  (is (true? (cut/letsencrypt-issuer? "staging")))
+  (is (true? (cut/letsencrypt-issuer? "prod"))))
+
+(deftest test-map-or-seq?
+  (is (true? (cut/map-or-seq? {:a 1 :b 2})))
+  (is (true? (cut/map-or-seq? '(1 2 3))))
+  (is (false? (cut/map-or-seq? "1,2,3"))))
+
+(deftest test-pvc-storage-class-name?
+  (is (true? (cut/pvc-storage-class-name? :manual)))
+  (is (true? (cut/pvc-storage-class-name? :local-path)))
+  (is (false? (cut/pvc-storage-class-name? :none))))
+
+(deftest test-port-number?
+  (is (true? (cut/port-number? 1)))
+  (is (true? (cut/port-number? 65535)))
+  (is (false? (cut/port-number? 0)))
+  (is (false? (cut/port-number? 65536)))
+  (is (false? (cut/port-number? "12345"))))
+
+(deftest test-host-and-port-string?
+  (is (true? (cut/host-and-port-string? "test.de:1234")))
+  (is (false? (cut/host-and-port-string? "test.de,1234")))
+  (is (false? (cut/host-and-port-string? "test.123:1234")))
+  (is (false? (cut/host-and-port-string? "test.de:abc"))))
\ No newline at end of file