From 3a688fe55ab0a8d16c3e193efaff8c967c6c0269 Mon Sep 17 00:00:00 2001
From: Phil Ross <philr@users.noreply.github.com>
Date: Wed, 17 Nov 2021 09:48:03 +0000
Subject: [PATCH] Fix random test failures in TestExcerpt #to_liquid. (#8884)

Merge pull request 8884
---
 test/test_filters.rb | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/test/test_filters.rb b/test/test_filters.rb
index 2bb68408..1ebc360b 100644
--- a/test/test_filters.rb
+++ b/test/test_filters.rb
@@ -37,6 +37,7 @@ class TestFilters < JekyllUnitTest
   context "filters" do
     setup do
       @sample_time = Time.utc(2013, 3, 27, 11, 22, 33)
+      @timezone_before_test = ENV["TZ"]
       @filter = make_filter_mock(
         "timezone"               => "UTC",
         "url"                    => "http://example.com",
@@ -55,6 +56,10 @@ class TestFilters < JekyllUnitTest
       ]
     end
 
+    teardown do
+      ENV["TZ"] = @timezone_before_test
+    end
+
     should "markdownify with simple string" do
       assert_equal(
         "<p>something <strong>really</strong> simple</p>\n",