1 files changed, 52 insertions, 0 deletions
diff --git a/test/dtrace/test_hash_create.rb b/test/dtrace/test_hash_create.rb
new file mode 100644
index 0000000000..6f6738195a
--- /dev/null
+++ b/test/dtrace/test_hash_create.rb
@@ -0,0 +1,52 @@
+require 'dtrace/helper'
+
+module DTrace
+  class TestHashCreate < TestCase
+    def test_hash_new
+      trap_probe(probe, 'Hash.new') { |_,rbfile,saw|
+        saw = saw.map(&:split).find_all { |num, file, line|
+          file == rbfile && num == '0'
+        }
+        assert_operator saw.length, :>, 0
+      }
+    end
+
+    def test_hash_lit
+      trap_probe(probe, '{}') { |_,rbfile,saw|
+        saw = saw.map(&:split).find_all { |num, file, line|
+          file == rbfile && num == '0'
+        }
+        assert_operator saw.length, :>, 0
+      }
+    end
+
+    def test_hash_lit_elements
+      trap_probe(probe, '{ :foo => :bar }') { |_,rbfile,saw|
+        saw = saw.map(&:split).find_all { |num, file, line|
+          file == rbfile && num == '2'
+        }
+        assert_operator saw.length, :>, 0
+      }
+    end
+
+    def test_hash_lit_elements_string
+      trap_probe(probe, '{ :foo => :bar, :bar => "baz" }') { |_,rbfile,saw|
+        saw = saw.map(&:split).find_all { |num, file, line|
+          file == rbfile && num == '4'
+        }
+        assert_operator saw.length, :>, 0
+      }
+    end
+
+    private
+    def probe
+      <<-eoprobe
+ruby$target:::hash-create
+/arg1/
+{
+  printf("%d %s %d\\n", arg0, copyinstr(arg1), arg2);
+}
+      eoprobe
+    end
+  end
+end