feat: doesNotEqual util

MikeIbberson · Feb 3, 2020 · 9f9018c · 9f9018c
1 parent 41cae41
commit 9f9018c
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Showing 3 changed files with 22 additions and 5 deletions.
diff --git 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
@@ -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
@@ -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,