From 94df4b3135b03a392c1925f92e7e88c3c2fbe9de Mon Sep 17 00:00:00 2001
From: Marc-Andre Lafortune <github@marc-andre.ca>
Date: Mon, 10 Oct 2016 22:40:00 -0400
Subject: [PATCH] Fix _has_class to avoid confusion with partial matches

---
 lib/component_factory.rb                 |  2 +-
 spec/cases/button/with_tricky_class.inky | 18 ++++++++++++++++--
 2 files changed, 17 insertions(+), 3 deletions(-)

diff --git a/lib/component_factory.rb b/lib/component_factory.rb
index 60567a8..17da3ae 100644
--- a/lib/component_factory.rb
+++ b/lib/component_factory.rb
@@ -18,7 +18,7 @@ def _pass_through_attributes(elem)
   end
 
   def _has_class(elem, klass)
-    (elem.attr('class') || '').include?(klass)
+    elem.attr('class') =~ /(^|\s)#{klass}($|\s)/
   end
 
   def _combine_classes(elem, extra_classes)
diff --git a/spec/cases/button/with_tricky_class.inky b/spec/cases/button/with_tricky_class.inky
index b8adefc..3f4d2da 100644
--- a/spec/cases/button/with_tricky_class.inky
+++ b/spec/cases/button/with_tricky_class.inky
@@ -1,5 +1,19 @@
-<!-- pending -->
-
 <button href="http://example.com" class="noexpand">
   A label
 </button>
+
+<button href="http://example.com" class="expand-niet">
+  A label
+</button>
+
+<button href="http://example.com" class="expand foo">
+  A label
+</button>
+
+<button href="http://example.com" class="foo expand">
+  A label
+</button>
+
+<button href="http://example.com" class="foo expand bar">
+  A label
+</button>