[ruby/date] Make Ractor-compatible

1 files changed, 27 insertions, 0 deletions

diff --git a/test/date/test_date_ractor.rb b/test/date/test_date_ractor.rb
new file mode 100644
index 0000000000..7b0c3f4911
--- /dev/null
+++ b/test/date/test_date_ractor.rb
@@ -0,0 +1,27 @@
+# frozen_string_literal: true
+require 'test/unit'
+require 'date'
+
+class TestDateParse < Test::Unit::TestCase
+  def code(klass = Date, share: false)
+    <<~RUBY.gsub('Date', klass.name)
+      share = #{share}
+      d = Date.parse('Aug 23:55')
+      Ractor.make_shareable(d) if share
+      d2, d3 = Ractor.new(d) { |d| [d, Date.parse(d.to_s)] }.take
+      if share
+        assert_same d, d2
+      else
+        assert_equal d, d2
+      end
+      assert_equal d, d3
+    RUBY
+  end
+
+  def test_date_ractor
+    assert_ractor(code                       , require: 'date')
+    assert_ractor(code(          share: true), require: 'date')
+    assert_ractor(code(DateTime             ), require: 'date')
+    assert_ractor(code(DateTime, share: true), require: 'date')
+  end
+end