add Ractor#[]/#[]= for ractor local storage

This API is similar to plain old Thread#[]/Fiber#[] interface
with symbol key.

1 files changed, 14 insertions, 0 deletions

diff --git a/bootstraptest/test_ractor.rb b/bootstraptest/test_ractor.rb
index a853e91416..06bd739931 100644
--- a/bootstraptest/test_ractor.rb
+++ b/bootstraptest/test_ractor.rb
@@ -1245,6 +1245,20 @@ assert_equal '[:ok, :ok]', %q{
   end
 }
 
+# Ractor-local storage
+assert_equal '[nil, "b", "a"]', %q{
+  ans = []
+  Ractor.current[:key] = 'a'
+  r = Ractor.new{
+    Ractor.yield self[:key]
+    self[:key] = 'b'
+    self[:key]
+  }
+  ans << r.take
+  ans << r.take
+  ans << Ractor.current[:key]
+}
+
 ###
 ### Synchronization tests
 ###