1 files changed, 28 insertions, 0 deletions
diff --git a/spec/ruby/core/string/unpack/d_spec.rb b/spec/ruby/core/string/unpack/d_spec.rb
new file mode 100644
index 0000000000..0e4f57ec04
--- /dev/null
+++ b/spec/ruby/core/string/unpack/d_spec.rb
@@ -0,0 +1,28 @@
+require_relative '../../../spec_helper'
+require_relative '../fixtures/classes'
+require_relative 'shared/basic'
+require_relative 'shared/float'
+
+little_endian do
+  describe "String#unpack with format 'D'" do
+    it_behaves_like :string_unpack_basic, 'D'
+    it_behaves_like :string_unpack_double_le, 'D'
+  end
+
+  describe "String#unpack with format 'd'" do
+    it_behaves_like :string_unpack_basic, 'd'
+    it_behaves_like :string_unpack_double_le, 'd'
+  end
+end
+
+big_endian do
+  describe "String#unpack with format 'D'" do
+    it_behaves_like :string_unpack_basic, 'D'
+    it_behaves_like :string_unpack_double_be, 'D'
+  end
+
+  describe "String#unpack with format 'd'" do
+    it_behaves_like :string_unpack_basic, 'd'
+    it_behaves_like :string_unpack_double_be, 'd'
+  end
+end