From 9f9018ccd97ca94c951bd656fde1e7c0c699d56f Mon Sep 17 00:00:00 2001
From: Mike <mibberson@3merge.ca>
Date: Mon, 3 Feb 2020 13:39:45 -0500
Subject: [PATCH] feat: doesNotEqual util

---
 lib/__tests__/utils.test.js | 11 +++++++++++
 lib/index.js                |  2 ++
 lib/utils.js                | 14 +++++++++-----
 3 files changed, 22 insertions(+), 5 deletions(-)

diff --git a/lib/__tests__/utils.test.js b/lib/__tests__/utils.test.js
index 5f54f99..e1905dd 100644
--- a/lib/__tests__/utils.test.js
+++ b/lib/__tests__/utils.test.js
@@ -38,6 +38,17 @@ describe('Utils', () => {
       expect(Utils.equals('a', '*')).toBeTruthy());
   });
 
+  describe('"doesNotEqual"', () => {
+    it('should return truthy', () =>
+      expect(Utils.doesNotEqual('foo', 'bar')).toBeTruthy());
+
+    it('should return falsy', () =>
+      expect(Utils.doesNotEqual('foo', 'foo')).toBeFalsy());
+
+    it('should return falsy', () =>
+      expect(Utils.doesNotEqual(2, 2)).toBeFalsy());
+  });
+
   describe('isGreaterThan', () => {
     it('should return truthy on numerics', () =>
       expect(Utils.isGreaterThan(123, 12)).toBeTruthy());
diff --git a/lib/index.js b/lib/index.js
index b7b2b6a..283046d 100644
--- a/lib/index.js
+++ b/lib/index.js
@@ -2,6 +2,7 @@ const flat = require('flat');
 
 const {
   equals,
+  doesNotEqual,
   isGreaterThan,
   isLessThan,
   isGreaterThanOrEqualTo,
@@ -16,6 +17,7 @@ const ops = {
   '>': isGreaterThan,
   '<': isLessThan,
   '=': equals,
+  '!=': doesNotEqual,
 };
 
 const getAssignment = {
diff --git a/lib/utils.js b/lib/utils.js
index 5db3ae7..d89aedc 100644
--- a/lib/utils.js
+++ b/lib/utils.js
@@ -58,16 +58,19 @@ class ValidatorRunner {
   }
 }
 
+const runCompare = (a, b, locale) =>
+  String(a).localeCompare(String(b), locale, {
+    sensitivity: 'base',
+  });
+
 const equals = (a, b, locale) => {
   if (b === '*') return a !== '' && a !== undefined && a !== null;
 
-  return (
-    String(a).localeCompare(String(b), locale, {
-      sensitivity: 'base',
-    }) === 0
-  );
+  return runCompare(a, b, locale) === 0;
 };
 
+const doesNotEqual = (a, b, locale) => runCompare(a, b, locale) !== 0;
+
 const isGreaterThan = (a, b) =>
   new ValidatorRunner([a, b]).sequence([
     'isGreaterThanNumeric',
@@ -103,6 +106,7 @@ const isEmpty = (v) =>
 
 module.exports = {
   equals,
+  doesNotEqual,
   isGreaterThan,
   isLessThan,
   isGreaterThanOrEqualTo,