guix/gnu/packages/patches/ruby-mustache-1.1.1-fix-race-condition-tests.patch

From 407c6a5db6c1f1cfb40bd6113f07f067d07885a4 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?V=C3=ADt=20Ondruch?= <vondruch@redhat.com>
Origin: https://github.com/mustache/mustache/pull/258
Bug-Debian: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=954503
Date: Mon, 27 Apr 2020 11:16:17 +0200
Subject: [PATCH] Fix test race condition.

The test suite randomly fails with errors such as:

~~~
  1) Failure:
AutoloadingTest#test_autoload_lowercase [/builddir/build/BUILD/mustache-1.1.1/usr/share/gems/gems/mustache-1.1.1/test/autoloading_test.rb:17]:
Expected: Comments
  Actual: nil
~~~

This happens when `test_namespaced*` test cases are executed earlier
than the remaining test cases, because they are defining
`view_namespace` but not cleaning up afterwards.
---
 test/autoloading_test.rb | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/test/autoloading_test.rb b/test/autoloading_test.rb
index 0a7ad762..77eb3557 100644
--- a/test/autoloading_test.rb
+++ b/test/autoloading_test.rb
@@ -7,6 +7,10 @@ def setup
     Mustache.view_path = File.dirname(__FILE__) + '/fixtures'
   end
 
+  def teardown
+    Mustache.remove_instance_variable(:@view_namespace) if Mustache.instance_variable_defined?(:@view_namespace)
+  end
+
   def test_autoload
     klass = Mustache.view_class(:Comments)
     assert_equal Comments, klass