nil은 :scm/unresolved를 대신함

test/scm_test.clj

@@ -1,6 +1,7 @@
 (ns scm-test
   (:require [scm :as sut]
-            [clojure.test :as t]))
+            [clojure.test :as t])
+  (:import scm.ISyntax scm.Syntax))
 
 (t/deftest read-test
   (t/testing "boolean"
@@ -61,5 +62,9 @@
   (t/is (sut/syntax? #scm/stx [123 #{}]))
   (t/is (= 123 (sut/syntax-e #scm/stx [123 #{}]))))
 
-(t/deftest resolved?-test
+(t/deftest unresolved?-test
+  (t/is (sut/unresolved? (scm/->Syntax 123 nil)))
   (t/is (sut/unresolved? #scm/stx 123)))
+
+(t/deftest resolved?-test
+  (t/is (sut/resolved? (scm/->Syntax 123 '#{a}))))