Return an empty array if no tracker is found

1 files changed, 9 insertions, 2 deletions

diff --git a/actionpack/test/template/dependency_tracker_test.rb b/actionpack/test/template/dependency_tracker_test.rb
index 5b2ec0eb2d..714e2d6b29 100644
--- a/actionpack/test/template/dependency_tracker_test.rb
+++ b/actionpack/test/template/dependency_tracker_test.rb
@@ -3,6 +3,7 @@ require 'action_view/dependency_tracker'
 
 class DependencyTrackerTest < ActionView::TestCase
   Neckbeard = Class.new
+  Bowtie = Class.new
 
   class NeckbeardTracker
     def self.call(name, template)
@@ -13,8 +14,8 @@ class DependencyTrackerTest < ActionView::TestCase
   class FakeTemplate
     attr_reader :source, :handler
 
-    def initialize(source)
-      @source, @handler = source, Neckbeard
+    def initialize(source, handler = Neckbeard)
+      @source, @handler = source, handler
     end
   end
 
@@ -35,4 +36,10 @@ class DependencyTrackerTest < ActionView::TestCase
     dependencies = tracker.find_dependencies("boo/hoo", template)
     assert_equal ["foo/boo/hoo"], dependencies
   end
+
+  def test_returns_empty_array_if_no_tracker_is_found
+    template = FakeTemplate.new("boo/hoo", Bowtie)
+    dependencies = tracker.find_dependencies("boo/hoo", template)
+    assert_equal [], dependencies
+  end
 end