From 29bc8b9e17d4c5e89120d520438cbae27b3e8b02 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fabio=20Jos=C3=A9?= <fabiojose@gmail.com>
Date: Sun, 4 Aug 2019 09:35:19 -0300
Subject: [PATCH] isBase64 and clone functions
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Signed-off-by: Fabio José <fabiojose@gmail.com>
---
 lib/utils/fun.js  | 11 ++++++++++-
 test/fun_tests.js | 14 ++++++++++++++
 2 files changed, 24 insertions(+), 1 deletion(-)

diff --git a/lib/utils/fun.js b/lib/utils/fun.js
index 5534889..82d4aca 100644
--- a/lib/utils/fun.js
+++ b/lib/utils/fun.js
@@ -25,6 +25,13 @@ const equalsOrThrow = (v1, v2, t) =>
     ? true
     : (() => {throw t;})());
 
+const isBase64 = (value) =>
+  Buffer.from(value, "base64").toString("base64") === value;
+
+
+const clone = (o) =>
+  JSON.parse(JSON.stringify(o));
+
 module.exports = {
   isString,
   isStringOrThrow,
@@ -34,5 +41,7 @@ module.exports = {
   isDefinedOrThrow,
   isStringOrObjectOrThrow,
 
-  equalsOrThrow
+  equalsOrThrow,
+  isBase64,
+  clone
 };
diff --git a/test/fun_tests.js b/test/fun_tests.js
index aa4fdb9..d3700f0 100644
--- a/test/fun_tests.js
+++ b/test/fun_tests.js
@@ -29,4 +29,18 @@ describe("Functional approach", () => {
         .equals(true);
     });
   });
+
+  describe("isBase64", () => {
+    it("should return false when is not base64 string", () => {
+      let actual = fun.isBase64("non base 64");
+
+      expect(actual).to.equal(false);
+    });
+
+    it("should return true when is a base64 string", () => {
+      let actual = fun.isBase64("Y2xvdWRldmVudHMK");
+
+      expect(actual).to.equal(true);
+    });
+  });
 });