Implemented suggesting improvements

test/stringPermutations/stringPermutations.test.js

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+const test = require('tape');
+const stringPermutations = require('./stringPermutations.js');
+
+test('Testing stringPermutations', (t) => {
+  //For more information on all the methods supported by tape
+  //Please go to https://github.com/substack/tape
+  t.true(typeof stringPermutations === 'function', 'stringPermutations is a Function');
+  t.deepEqual(stringPermutations('abc'), ['abc','acb','bac','bca','cab','cba'], "Generates all stringPermutations of a string");
+  t.deepEqual(stringPermutations('a'), ['a'], "Works for single-letter strings");
+  t.deepEqual(stringPermutations(''), [''], "Works for empty strings");
+  //t.deepEqual(anagrams(args..), 'Expected');
+  //t.equal(anagrams(args..), 'Expected');
+  //t.false(anagrams(args..), 'Expected');
+  //t.throws(anagrams(args..), 'Expected');
+  t.end();
+});