Add in-tree mspec and ruby/spec

* For easier modifications of ruby/spec by MRI developers.
* .gitignore: track changes under spec.
* spec/mspec, spec/rubyspec: add in-tree mspec and ruby/spec.
  These files can therefore be updated like any other file in MRI.
  Instructions are provided in spec/README.
  [Feature #13156] [ruby-core:79246]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@58595 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 21 insertions, 0 deletions

diff --git a/spec/rubyspec/core/string/unpack/z_spec.rb b/spec/rubyspec/core/string/unpack/z_spec.rb
new file mode 100644
index 0000000000..7c3d167ac2
--- /dev/null
+++ b/spec/rubyspec/core/string/unpack/z_spec.rb
@@ -0,0 +1,21 @@
+# -*- encoding: ascii-8bit -*-
+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/string', __FILE__)
+
+describe "String#unpack with format 'Z'" do
+  it_behaves_like :string_unpack_basic, 'Z'
+  it_behaves_like :string_unpack_no_platform, 'Z'
+  it_behaves_like :string_unpack_string, 'Z'
+
+  it "stops decoding at NULL bytes when passed the '*' modifier" do
+    "a\x00\x00 b \x00c".unpack('Z*Z*Z*Z*').should == ["a", "", " b ", "c"]
+  end
+
+  it "decodes the number of bytes specified by the count modifier and truncates the decoded string at the first NULL byte" do
+    [ ["a\x00 \x00b c",      ["a", " "]],
+      ["\x00a\x00 bc \x00",  ["", "c"]]
+    ].should be_computed_by(:unpack, "Z5Z")
+  end
+end