From d64bc5fc4692cf0ca0b269fe7027fef61adf0eb0 Mon Sep 17 00:00:00 2001
From: Wilco Fiers <wilco.fiers@deque.com>
Date: Sun, 5 Aug 2018 19:02:42 +0200
Subject: [PATCH] fix(errormessage): check data is an array of IDs

---
 lib/checks/aria/errormessage.js  |  2 +-
 test/checks/aria/errormessage.js | 10 ++++++++++
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/lib/checks/aria/errormessage.js b/lib/checks/aria/errormessage.js
index 9798c35267..d93113fe82 100644
--- a/lib/checks/aria/errormessage.js
+++ b/lib/checks/aria/errormessage.js
@@ -21,7 +21,7 @@ function validateAttrValue() {
 // limit results to elements that actually have this attribute
 if (options.indexOf(attr) === -1 && hasAttr) {
 	if (!validateAttrValue()) {
-		this.data(attr);
+		this.data(axe.utils.tokenList(attr));
 		return false;
 	}
 }
diff --git a/test/checks/aria/errormessage.js b/test/checks/aria/errormessage.js
index 3dc4f41a90..bc2eea55f9 100644
--- a/test/checks/aria/errormessage.js
+++ b/test/checks/aria/errormessage.js
@@ -56,6 +56,16 @@ describe('aria-errormessage', function() {
 		);
 	});
 
+	it('sets an array of IDs in data', function() {
+		var testHTML = '<div></div>';
+		testHTML += '<div id="plain"></div>';
+		fixture.innerHTML = testHTML;
+		var target = fixture.children[0];
+		target.setAttribute('aria-errormessage', ' foo  bar \tbaz  ');
+		checks['aria-errormessage'].evaluate.call(checkContext, target);
+		assert.deepEqual(checkContext._data, ['foo', 'bar', 'baz']);
+	});
+
 	(shadowSupported ? it : xit)(
 		'should return false if aria-errormessage value crosses shadow boundary',
 		function() {