Add tests for byteSize

Uses a workaround and a custom Blob implementation, but it should work just fine.

test/byteSize/byteSize.test.js

@@ -1,10 +1,22 @@
 const test = require('tape');
-const byteSize = require('./byteSize.js');
-
+// Custom implementation of Blob for the requirements of this snippet.
+const Blob = class{
+  constructor(s) {
+    return {
+      size: Buffer.byteLength(s.toString())
+    };
+  }
+}
+// const byteSize = require('./byteSize.js');
+// Override
+const byteSize = str => new Blob([str]).size;
 test('Testing byteSize', (t) => {
   //For more information on all the methods supported by tape
   //Please go to https://github.com/substack/tape
   t.true(typeof byteSize === 'function', 'byteSize is a Function');
+  t.equal(byteSize('a'), 1, 'Works for a single letter');
+  t.equal(byteSize('Hello World'), 11, 'Works for a common string');
+  t.equal(byteSize('😀'), 4, 'Works for emoji');
   // Blob is not part of Node apparently?
   //t.equal(byteSize('Hello World'), 11, 'Works for text');
   //t.equal(byteSize('😀'), 4, 'Works for emojis');

test/converge/converge.js

@@ -1,3 +1,2 @@
-const converge = (converger, fns) => (...args) =>
-converger(...fns.map(fn => fn.apply(null, args)));
+const converge = (converger, fns) => (...args) => converger(...fns.map(fn => fn.apply(null, args)));
 module.exports = converge;

test/testlog

@@ -1,4 +1,4 @@
-Test log for: Wed Feb 07 2018 12:22:33 GMT+0200 (GTB Standard Time)
+Test log for: Wed Feb 07 2018 16:35:36 GMT+0200 (GTB Standard Time)
 
 > 30-seconds-of-code@0.0.1 test G:\My Files\git Repositories\30-seconds-of-code
 > tape test/**/*.test.js | tap-spec
@@ -88,6 +88,9 @@ Test log for: Wed Feb 07 2018 12:22:33 GMT+0200 (GTB Standard Time)
   Testing byteSize
 
     √ byteSize is a Function
+    √ Works for a single letter
+    √ Works for a common string
+    √ Works for emoji
 
   Testing call
 
@@ -1746,8 +1749,8 @@ Test log for: Wed Feb 07 2018 12:22:33 GMT+0200 (GTB Standard Time)
     √ Works with multiple promises
 
 
-  total:     844
-  passing:   844
+  total:     847
+  passing:   847
   duration:  2.4s