diff --git a/spec/test/utilSpec.js b/spec/test/utilSpec.js
--- a/spec/test/utilSpec.js
+++ b/spec/test/utilSpec.js
@@ -13,6 +13,15 @@ describe("Util",function(){
 		["\uD55C\uAD6D\uC5B4",[0xED,0x95,0x9C,0xEA,0xB5,0xAD,0xEC,0x96,0xB4]],
 		["\ud84c\udfb4",[0xf0,0xa3,0x8e,0xb4]]
 	];
+	let base64=[
+		[[],""],
+		[[102],"Zg=="],
+		[[102,111],"Zm8="],
+		[[102,111,111],"Zm9v"],
+		[[102,111,111,98],"Zm9vYg=="],
+		[[102,111,111,98,97],"Zm9vYmE="],
+		[[102,111,111,98,97,114],"Zm9vYmFy"]
+	];
 	
 	describe("bytes2int32s",function(){
 		it("should pack bytes into 32b integers",function(){
@@ -34,4 +43,17 @@ describe("Util",function(){
 			utf.forEach(couple=>expect(util.utf82str(couple[1])).toEqual(couple[0]));
 		});
 	});
+	
+	
+	describe("bytes2base64",function(){
+		it("should correctly encode bytes into base64",function(){
+			base64.forEach(couple=>expect(util.bytes2base64(couple[0])).toEqual(couple[1]));
+		});
+	});
+	
+	describe("base642bytes",function(){
+		it("should correctly decode bytes from base64",function(){
+			base64.forEach(couple=>expect(util.base642bytes(couple[1])).toEqual(couple[0]));
+		});
+	});
 });