diff --git a/test/cljam/io/util/byte_buffer_test.clj b/test/cljam/io/util/byte_buffer_test.clj
new file mode 100644
index 00000000..ae8d8391
--- /dev/null
+++ b/test/cljam/io/util/byte_buffer_test.clj
@@ -0,0 +1,27 @@
+(ns cljam.io.util.byte-buffer-test
+  (:require [clojure.test :refer [deftest is]]
+            [cljam.io.util.byte-buffer :as bb]))
+
+(deftest make-lsb-byte-buffer-test
+  (let [bb (bb/make-lsb-byte-buffer (byte-array [0x01 0x23 0x45 0x67]))]
+    (is (= 0x67452301 (.getInt bb)))))
+
+(deftest make-msb-byte-buffer-test
+  (let [bb (bb/make-msb-byte-buffer (byte-array [0x01 0x23 0x45 0x67]))]
+    (is (= 0x01234567 (.getInt bb)))))
+
+(deftest allocate-lsb-byte-buffer-test
+  (let [bb (doto (bb/allocate-lsb-byte-buffer 8)
+             (.mark)
+             (.putLong 0x789ABCDEF0123456)
+             (.reset))]
+    (is (= (int 0xF0123456) (.getInt bb)))
+    (is (= (int 0x789ABCDE) (.getInt bb)))))
+
+(deftest allocate-msb-byte-buffer-test
+  (let [bb (doto (bb/allocate-msb-byte-buffer 8)
+             (.mark)
+             (.putLong 0x789ABCDEF0123456)
+             (.reset))]
+    (is (= (int 0x789ABCDE) (.getInt bb)))
+    (is (= (int 0xF0123456) (.getInt bb)))))