1 files changed, 222 insertions, 0 deletions
diff --git a/spec/ruby/core/array/pack/j_spec.rb b/spec/ruby/core/array/pack/j_spec.rb
new file mode 100644
index 0000000000..88f074724c
--- /dev/null
+++ b/spec/ruby/core/array/pack/j_spec.rb
@@ -0,0 +1,222 @@
+require File.expand_path('../../../../spec_helper', __FILE__)
+require File.expand_path('../../fixtures/classes', __FILE__)
+require File.expand_path('../shared/basic', __FILE__)
+require File.expand_path('../shared/numeric_basic', __FILE__)
+require File.expand_path('../shared/integer', __FILE__)
+
+ruby_version_is '2.3' do
+  # To handle the special case of x64-mingw32
+  pointer_size = RUBY_PLATFORM =~ /\bx64\b/ ? 64 : 1.size * 8
+
+  guard -> { pointer_size == 64 } do
+    describe "Array#pack with format 'J'" do
+      it_behaves_like :array_pack_basic, 'J'
+      it_behaves_like :array_pack_basic_non_float, 'J'
+      it_behaves_like :array_pack_arguments, 'J'
+      it_behaves_like :array_pack_numeric_basic, 'J'
+      it_behaves_like :array_pack_integer, 'J'
+    end
+
+    describe "Array#pack with format 'j'" do
+      it_behaves_like :array_pack_basic, 'j'
+      it_behaves_like :array_pack_basic_non_float, 'j'
+      it_behaves_like :array_pack_arguments, 'j'
+      it_behaves_like :array_pack_numeric_basic, 'j'
+      it_behaves_like :array_pack_integer, 'j'
+    end
+
+    little_endian do
+      describe "Array#pack with format 'J'" do
+        describe "with modifier '_'" do
+          it_behaves_like :array_pack_64bit_le, 'J_'
+        end
+
+        describe "with modifier '!'" do
+          it_behaves_like :array_pack_64bit_le, 'J!'
+        end
+      end
+
+      describe "Array#pack with format 'j'" do
+        describe "with modifier '_'" do
+          it_behaves_like :array_pack_64bit_le, 'j_'
+        end
+
+        describe "with modifier '!'" do
+          it_behaves_like :array_pack_64bit_le, 'j!'
+        end
+      end
+    end
+
+    big_endian do
+      describe "Array#pack with format 'J'" do
+        describe "with modifier '_'" do
+          it_behaves_like :array_pack_64bit_be, 'J_'
+        end
+
+        describe "with modifier '!'" do
+          it_behaves_like :array_pack_64bit_be, 'J!'
+        end
+      end
+
+      describe "Array#pack with format 'j'" do
+        describe "with modifier '_'" do
+          it_behaves_like :array_pack_64bit_be, 'j_'
+        end
+
+        describe "with modifier '!'" do
+          it_behaves_like :array_pack_64bit_be, 'j!'
+        end
+      end
+    end
+
+    describe "Array#pack with format 'J'" do
+      describe "with modifier '<' and '_'" do
+        it_behaves_like :array_pack_64bit_le, 'J<_'
+        it_behaves_like :array_pack_64bit_le, 'J_<'
+      end
+
+      describe "with modifier '<' and '!'" do
+        it_behaves_like :array_pack_64bit_le, 'J<!'
+        it_behaves_like :array_pack_64bit_le, 'J!<'
+      end
+
+      describe "with modifier '>' and '_'" do
+        it_behaves_like :array_pack_64bit_be, 'J>_'
+        it_behaves_like :array_pack_64bit_be, 'J_>'
+      end
+
+      describe "with modifier '>' and '!'" do
+        it_behaves_like :array_pack_64bit_be, 'J>!'
+        it_behaves_like :array_pack_64bit_be, 'J!>'
+      end
+    end
+
+    describe "Array#pack with format 'j'" do
+      describe "with modifier '<' and '_'" do
+        it_behaves_like :array_pack_64bit_le, 'j<_'
+        it_behaves_like :array_pack_64bit_le, 'j_<'
+      end
+
+      describe "with modifier '<' and '!'" do
+        it_behaves_like :array_pack_64bit_le, 'j<!'
+        it_behaves_like :array_pack_64bit_le, 'j!<'
+      end
+
+      describe "with modifier '>' and '_'" do
+        it_behaves_like :array_pack_64bit_be, 'j>_'
+        it_behaves_like :array_pack_64bit_be, 'j_>'
+      end
+
+      describe "with modifier '>' and '!'" do
+        it_behaves_like :array_pack_64bit_be, 'j>!'
+        it_behaves_like :array_pack_64bit_be, 'j!>'
+      end
+    end
+  end
+
+  guard -> { pointer_size == 32 } do
+    describe "Array#pack with format 'J'" do
+      it_behaves_like :array_pack_basic, 'J'
+      it_behaves_like :array_pack_basic_non_float, 'J'
+      it_behaves_like :array_pack_arguments, 'J'
+      it_behaves_like :array_pack_numeric_basic, 'J'
+      it_behaves_like :array_pack_integer, 'J'
+    end
+
+    describe "Array#pack with format 'j'" do
+      it_behaves_like :array_pack_basic, 'j'
+      it_behaves_like :array_pack_basic_non_float, 'j'
+      it_behaves_like :array_pack_arguments, 'j'
+      it_behaves_like :array_pack_numeric_basic, 'j'
+      it_behaves_like :array_pack_integer, 'j'
+    end
+
+    big_endian do
+      describe "Array#pack with format 'J'" do
+        describe "with modifier '_'" do
+          it_behaves_like :array_pack_32bit_be, 'J_'
+        end
+
+        describe "with modifier '!'" do
+          it_behaves_like :array_pack_32bit_be, 'J!'
+        end
+      end
+
+      describe "Array#pack with format 'j'" do
+        describe "with modifier '_'" do
+          it_behaves_like :array_pack_32bit_be, 'j_'
+        end
+
+        describe "with modifier '!'" do
+          it_behaves_like :array_pack_32bit_be, 'j!'
+        end
+      end
+    end
+
+    little_endian do
+      describe "Array#pack with format 'J'" do
+        describe "with modifier '_'" do
+          it_behaves_like :array_pack_32bit_le, 'J_'
+        end
+
+        describe "with modifier '!'" do
+          it_behaves_like :array_pack_32bit_le, 'J!'
+        end
+      end
+
+      describe "Array#pack with format 'j'" do
+        describe "with modifier '_'" do
+          it_behaves_like :array_pack_32bit_le, 'j_'
+        end
+
+        describe "with modifier '!'" do
+          it_behaves_like :array_pack_32bit_le, 'j!'
+        end
+      end
+    end
+
+    describe "Array#pack with format 'J'" do
+      describe "with modifier '<' and '_'" do
+        it_behaves_like :array_pack_32bit_le, 'J<_'
+        it_behaves_like :array_pack_32bit_le, 'J_<'
+      end
+
+      describe "with modifier '<' and '!'" do
+        it_behaves_like :array_pack_32bit_le, 'J<!'
+        it_behaves_like :array_pack_32bit_le, 'J!<'
+      end
+
+      describe "with modifier '>' and '_'" do
+        it_behaves_like :array_pack_32bit_be, 'J>_'
+        it_behaves_like :array_pack_32bit_be, 'J_>'
+      end
+
+      describe "with modifier '>' and '!'" do
+        it_behaves_like :array_pack_32bit_be, 'J>!'
+        it_behaves_like :array_pack_32bit_be, 'J!>'
+      end
+    end
+
+    describe "Array#pack with format 'j'" do
+      describe "with modifier '<' and '_'" do
+        it_behaves_like :array_pack_32bit_le, 'j<_'
+        it_behaves_like :array_pack_32bit_le, 'j_<'
+      end
+
+      describe "with modifier '<' and '!'" do
+        it_behaves_like :array_pack_32bit_le, 'j<!'
+        it_behaves_like :array_pack_32bit_le, 'j!<'
+      end
+
+      describe "with modifier '>' and '_'" do
+        it_behaves_like :array_pack_32bit_be, 'j>_'
+        it_behaves_like :array_pack_32bit_be, 'j_>'
+      end
+
+      describe "with modifier '>' and '!'" do
+        it_behaves_like :array_pack_32bit_be, 'j>!'
+        it_behaves_like :array_pack_32bit_be, 'j!>'
+      end
+    end
+  end
+end