Fix jruby CI

Author: byroot

.github/workflows/test.yaml

@@ -33,7 +33,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        ruby: ["3.1", "3.0", "2.7", "2.6", "2.5", "2.4"]
+        ruby: ["3.1", "3.0", "2.7", "2.6", "2.5", "2.4", "jruby-9.3.6.0"]
     runs-on: ubuntu-latest
     env:
       VERBOSE: "true"

Gemfile

@@ -7,8 +7,3 @@ gemspec
 gem 'minitest'
 gem 'rake'
 gem 'rubocop', '~> 1.0', '< 1.12'
-
-# Using jruby-openssl 0.10.0, we get NPEs in jruby tests: https://github.com/redis/redis-rb/issues/756
-platform :jruby do
-  gem 'jruby-openssl', '<0.10.0'
-end

test/support/redis_mock.rb

@@ -30,7 +30,6 @@ def start(&block)
 
     def shutdown
       @thread.kill
-      @thread.join
     end
 
     def run