1 files changed, 25 insertions, 0 deletions
diff --git a/spec/rubyspec/core/string/unpack/w_spec.rb b/spec/rubyspec/core/string/unpack/w_spec.rb
new file mode 100644
index 0000000000..22f5980a46
--- /dev/null
+++ b/spec/rubyspec/core/string/unpack/w_spec.rb
@@ -0,0 +1,25 @@
+# -*- encoding: ascii-8bit -*-
+require File.expand_path('../../../../spec_helper', __FILE__)
+require File.expand_path('../../fixtures/classes', __FILE__)
+require File.expand_path('../shared/basic', __FILE__)
+
+describe "String#unpack with directive 'w'" do
+  it_behaves_like :string_unpack_basic, 'w'
+  it_behaves_like :string_unpack_no_platform, 'w'
+
+  it "decodes a BER-compressed integer" do
+    [ ["\x00", [0]],
+      ["\x01", [1]],
+      ["\xce\x0f", [9999]],
+      ["\x84\x80\x80\x80\x80\x80\x80\x80\x80\x00", [2**65]]
+    ].should be_computed_by(:unpack, "w")
+  end
+
+  it "ignores NULL bytes between directives" do
+    "\x01\x02\x03".unpack("w\x00w").should == [1, 2]
+  end
+
+  it "ignores spaces between directives" do
+    "\x01\x02\x03".unpack("w w").should == [1, 2]
+  end
+end