Test migration to jest by hand

Apparently using regular expressions is way easier.

test/levenshteinDistance/levenshteinDistance.js

@@ -0,0 +1,18 @@
+const levenshteinDistance  = (string1, string2) => {
+if(string1.length === 0) return string2.length;
+if(string2.length === 0) return string1.length;
+let matrix = Array(string2.length + 1).fill(0).map((x,i) => [i]);
+matrix[0] = Array(string1.length + 1).fill(0).map((x,i) => i);
+for(let i = 1; i <= string2.length; i++){
+for(let j = 1; j<=string1.length; j++){
+if(string2[i-1] === string1[j-1]){
+matrix[i][j] = matrix[i-1][j-1];
+}
+else{
+matrix[i][j] = Math.min(matrix[i-1][j-1]+1, matrix[i][j-1]+1, matrix[i-1][j]+1);
+}
+}
+}
+return matrix[string2.length][string1.length];
+};
+module.exports = levenshteinDistance;

test/levenshteinDistance/levenshteinDistance.test.js

@@ -0,0 +1,8 @@
+const expect = require('expect');
+const levenshteinDistance = require('./levenshteinDistance.js');
+
+
+  test('levenshteinDistance is a Function', () => {
+  expect(levenshteinDistance).toBeInstanceOf(Function);
+});
+