1 files changed, 28 insertions, 0 deletions
diff --git a/test/dtrace/test_string.rb b/test/dtrace/test_string.rb
new file mode 100644
index 0000000000..a72f989f63
--- /dev/null
+++ b/test/dtrace/test_string.rb
@@ -0,0 +1,28 @@
+# frozen_string_literal: false
+require_relative 'helper'
+
+module DTrace
+  class TestStringProbes < TestCase
+    def test_object_create_start_string_lit
+      trap_probe(probe, '"omglolwutbbq"') { |_,rbfile,orig|
+        saw = orig.map(&:split).find_all { |klass, file, line, len|
+          file == rbfile && len == '12' && line == '1'
+        }
+        assert_equal(%w{ String }, saw.map(&:first), orig.inspect)
+        assert_equal([rbfile], saw.map { |line| line[1] })
+        assert_equal(['1'], saw.map { |line| line[2] })
+      }
+    end
+
+    private
+    def probe
+      <<-eoprobe
+ruby$target:::string-create
+/arg1/
+{
+  printf("String %s %d %d\\n", copyinstr(arg1), arg2, arg0);
+}
+      eoprobe
+    end
+  end
+end if defined?(DTrace::TestCase)