From 2b90ef16942496e78b6b97cd4814f1b84db27164 Mon Sep 17 00:00:00 2001
From: Vojta Jina
Date: Fri, 24 May 2013 15:55:11 -0700
Subject: test(matchers): update toThrow matcher

---
 test/matchers.js | 35 +++++++++++++++++++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/test/matchers.js b/test/matchers.js
index 3630c3b1..8e4be118 100644
--- a/test/matchers.js
+++ b/test/matchers.js
@@ -151,3 +151,38 @@ beforeEach(function() {
 
   });
 });
+
+
+// TODO(vojta): remove this once Jasmine in Karma gets updated
+// https://github.com/pivotal/jasmine/blob/c40b64a24c607596fa7488f2a0ddb98d063c872a/src/core/Matchers.js#L217-L246
+// This toThrow supports RegExps.
+jasmine.Matchers.prototype.toThrow = function(expected) {
+  var result = false;
+  var exception, exceptionMessage;
+  if (typeof this.actual != 'function') {
+    throw new Error('Actual is not a function');
+  }
+  try {
+    this.actual();
+  } catch (e) {
+    exception = e;
+  }
+
+  if (exception) {
+    exceptionMessage = exception.message || exception;
+    result = (isUndefined(expected) || this.env.equals_(exceptionMessage, expected.message || expected) || (jasmine.isA_("RegExp", expected) && expected.test(exceptionMessage)));
+  }
+
+  var not = this.isNot ? "not " : "";
+  var regexMatch = jasmine.isA_("RegExp", expected) ? " an exception matching" : "";
+
+  this.message = function() {
+    if (exception) {
+      return ["Expected function " + not + "to throw" + regexMatch, expected ? expected.message || expected : "an exception", ", but it threw", exceptionMessage].join(' ');
+    } else {
+      return "Expected function to throw an exception.";
+    }
+  };
+
+  return result;
+};
-- 
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