From c7402023d6a3a6b7a03abf2d52d948d0964683c8 Mon Sep 17 00:00:00 2001
From: James Talmage <james.talmage@jrtechnical.com>
Date: Thu, 26 May 2016 02:24:50 -0400
Subject: [PATCH] add t.notRegex (#879)

* add t.notRegex

Fixes #877

* add notRegex to power-assert patterns
---
 lib/assert.js         |  4 ++++
 lib/enhance-assert.js |  1 +
 readme.md             |  4 ++++
 test/assert.js        | 12 ++++++++++++
 4 files changed, 21 insertions(+)

diff --git a/lib/assert.js b/lib/assert.js
index 52b5053fb..19b7b86aa 100644
--- a/lib/assert.js
+++ b/lib/assert.js
@@ -142,6 +142,10 @@ x.regex = function (contents, regex, msg) {
 	test(regex.test(contents), create(regex, contents, '===', msg, x.regex));
 };
 
+x.notRegex = function (contents, regex, msg) {
+	test(!regex.test(contents), create(regex, contents, '!==', msg, x.notRegex));
+};
+
 x.ifError = x.error = function (err, msg) {
 	test(!err, create(err, 'Error', '!==', msg, x.ifError));
 };
diff --git a/lib/enhance-assert.js b/lib/enhance-assert.js
index 9bdc7989f..54210aeff 100644
--- a/lib/enhance-assert.js
+++ b/lib/enhance-assert.js
@@ -13,6 +13,7 @@ module.exports.PATTERNS = [
 	't.deepEqual(value, expected, [message])',
 	't.notDeepEqual(value, expected, [message])',
 	't.regex(contents, regex, [message])',
+	't.notRegex(contents, regex, [message])',
 	// deprecated apis
 	't.ok(value, [message])',
 	't.notOk(value, [message])',
diff --git a/readme.md b/readme.md
index 39f0d938d..ecea20259 100644
--- a/readme.md
+++ b/readme.md
@@ -878,6 +878,10 @@ Assert that `function` doesn't throw an `error` or `promise` resolves.
 
 Assert that `contents` matches `regex`.
 
+### `.notRegex(contents, regex, [message])`
+
+Assert that `contents` does not match `regex`.
+
 ### `.ifError(error, [message])`
 
 Assert that `error` is falsy.
diff --git a/test/assert.js b/test/assert.js
index f573dbf75..574964ed4 100644
--- a/test/assert.js
+++ b/test/assert.js
@@ -345,6 +345,18 @@ test('.regex()', function (t) {
 	t.end();
 });
 
+test('.notRegex()', function (t) {
+	t.doesNotThrow(function () {
+		assert.notRegex('abc', /def/);
+	});
+
+	t.throws(function () {
+		assert.notRegex('abc', /abc/);
+	});
+
+	t.end();
+});
+
 test('.ifError()', function (t) {
 	t.throws(function () {
 		assert.ifError(new Error());