Skip code coverage on Ruby >= 3.1

See simplecov-ruby/simplecov#1003

Author: splattael

spec/spec_helper.rb

@@ -9,12 +9,16 @@
                                           ActiveSupport::VERSION::MAJOR &&
                                           ActiveSupport::VERSION::MAJOR < 4
 
-SimpleCov.start do
-  add_filter 'spec/'
+# Skip code covarge on Ruby >= 3.1
+# See https://github.com/simplecov-ruby/simplecov/issues/1003
+unless RUBY_VERSION >= '3.1'
+  SimpleCov.start do
+    add_filter 'spec/'
+  end
+
+  Coveralls.wear! unless RUBY_PLATFORM.eql? 'java'
 end
 
-Coveralls.wear! unless RUBY_PLATFORM.eql? 'java'
-
 $LOAD_PATH.unshift(File.dirname(__FILE__))
 $LOAD_PATH.unshift(File.join(File.dirname(__FILE__), '..', 'lib'))
 $LOAD_PATH.unshift(File.join(File.dirname(__FILE__), 'support'))