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, 41 insertions, 0 deletions

diff --git a/spec/rubyspec/core/dir/shared/chroot.rb b/spec/rubyspec/core/dir/shared/chroot.rb
new file mode 100644
index 0000000000..2ed033dfed
--- /dev/null
+++ b/spec/rubyspec/core/dir/shared/chroot.rb
@@ -0,0 +1,41 @@
+describe :dir_chroot_as_root, shared: true do
+  before :all do
+    DirSpecs.create_mock_dirs
+
+    @real_root = "../" * (File.dirname(__FILE__).count('/') - 1)
+    @ref_dir = File.join("/", Dir.new('/').entries.first)
+  end
+
+  after :all do
+    until File.exist?(@ref_dir)
+      Dir.send(@method, "../") or break
+    end
+
+    DirSpecs.delete_mock_dirs
+  end
+
+  it "can be used to change the process' root directory" do
+    lambda { Dir.send(@method, File.dirname(__FILE__)) }.should_not raise_error
+    File.exist?("/#{File.basename(__FILE__)}").should be_true
+  end
+
+  it "returns 0 if successful" do
+    Dir.send(@method, '/').should == 0
+  end
+
+  it "raises an Errno::ENOENT exception if the directory doesn't exist" do
+    lambda { Dir.send(@method, 'xgwhwhsjai2222jg') }.should raise_error(Errno::ENOENT)
+  end
+
+  it "can be escaped from with ../" do
+    Dir.send(@method, @real_root)
+    File.exist?(@ref_dir).should be_true
+    File.exist?("/#{File.basename(__FILE__)}").should be_false
+  end
+
+  it "calls #to_path on non-String argument" do
+    p = mock('path')
+    p.should_receive(:to_path).and_return(@real_root)
+    Dir.send(@method, p)
+  end
+end