1 files changed, 25 insertions, 1 deletions
diff --git a/activesupport/test/configurable_test.rb b/activesupport/test/configurable_test.rb
index cef67e3cf9..2b28e61815 100644
--- a/activesupport/test/configurable_test.rb
+++ b/activesupport/test/configurable_test.rb
@@ -21,6 +21,12 @@ class ConfigurableActiveSupport < ActiveSupport::TestCase
     assert_equal({ :foo => :bar }, Parent.config)
   end
 
+  test "adds a configuration hash to a module as well" do
+    mixin = Module.new { include ActiveSupport::Configurable }
+    mixin.config.foo = :bar
+    assert_equal({ :foo => :bar }, mixin.config)
+  end
+
   test "configuration hash is inheritable" do
     assert_equal :bar, Child.config.foo
     assert_equal :bar, Parent.config.foo
@@ -39,4 +45,22 @@ class ConfigurableActiveSupport < ActiveSupport::TestCase
     assert_equal :baz, instance.config.foo
     assert_equal :bar, Parent.config.foo
   end
-end
-\ No newline at end of file
+
+  test "configuration is crystalizeable" do
+    parent = Class.new { include ActiveSupport::Configurable }
+    child  = Class.new(parent)
+
+    parent.config.bar = :foo
+    assert !parent.config.respond_to?(:bar)
+    assert !child.config.respond_to?(:bar)
+    assert !child.new.config.respond_to?(:bar)
+
+    parent.config.compile_methods!
+    assert_equal :foo, parent.config.bar
+    assert_equal :foo, child.new.config.bar
+
+    assert_respond_to parent.config, :bar
+    assert_respond_to child.config, :bar
+    assert_respond_to child.new.config, :bar
+  end
+end