[strscan] Make strscan Ractor safe (#17)

* Make strscan Ractor safe

* Add test-unit in the development dependencies

https://github.com/ruby/strscan/commit/3c93c2bebe

1 files changed, 28 insertions, 0 deletions

diff --git a/test/strscan/test_ractor.rb b/test/strscan/test_ractor.rb
new file mode 100644
index 0000000000..0d44242304
--- /dev/null
+++ b/test/strscan/test_ractor.rb
@@ -0,0 +1,28 @@
+# frozen_string_literal: true
+require 'test/unit'
+
+class TestStringScannerRactor < Test::Unit::TestCase
+  def setup
+    skip unless defined? Ractor
+  end
+
+  def test_ractor
+    assert_in_out_err([], <<-"end;", ["stra", " ", "strb", " ", "strc"], [])
+      require "strscan"
+      $VERBOSE = nil
+      r = Ractor.new do
+        s = StringScanner.new("stra strb strc", true)
+        [
+          s.scan(/\\w+/),
+          s.scan(/\\s+/),
+          s.scan(/\\w+/),
+          s.scan(/\\s+/),
+          s.scan(/\\w+/),
+          s.scan(/\\w+/),
+          s.scan(/\\w+/)
+        ]
+      end
+      puts r.take.compact
+    end;
+  end
+end