From 6b95b25000a713cb86cdb5ddceb5aa46c819962e Mon Sep 17 00:00:00 2001
From: xcatliu <xcatliu@gmail.com>
Date: Thu, 27 Aug 2020 17:03:15 +0800
Subject: feat(std/testing): add assertNotMatch (#6775)

---
 std/testing/asserts.ts | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

(limited to 'std/testing/asserts.ts')

diff --git a/std/testing/asserts.ts b/std/testing/asserts.ts
index fe8b90f63..aa3017a4c 100644
--- a/std/testing/asserts.ts
+++ b/std/testing/asserts.ts
@@ -409,6 +409,23 @@ export function assertMatch(
   }
 }
 
+/**
+ * Make an assertion that `actual` not match RegExp `expected`. If match
+ * then thrown
+ */
+export function assertNotMatch(
+  actual: string,
+  expected: RegExp,
+  msg?: string,
+): void {
+  if (expected.test(actual)) {
+    if (!msg) {
+      msg = `actual: "${actual}" expected to not match: "${expected}"`;
+    }
+    throw new AssertionError(msg);
+  }
+}
+
 /**
  * Forcefully throws a failed assertion
  */
-- 
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