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, 26 insertions, 0 deletions

diff --git a/spec/mspec/lib/mspec/helpers/fixture.rb b/spec/mspec/lib/mspec/helpers/fixture.rb
new file mode 100644
index 0000000000..718c1b7a94
--- /dev/null
+++ b/spec/mspec/lib/mspec/helpers/fixture.rb
@@ -0,0 +1,26 @@
+class Object
+  # Returns the name of a fixture file by adjoining the directory
+  # of the +file+ argument with "fixtures" and the contents of the
+  # +args+ array. For example,
+  #
+  #   +file+ == "some/example_spec.rb"
+  #
+  # and
+  #
+  #   +args+ == ["subdir", "file.txt"]
+  #
+  # then the result is the expanded path of
+  #
+  #   "some/fixtures/subdir/file.txt".
+  def fixture(file, *args)
+    path = File.dirname(file)
+    path = path[0..-7] if path[-7..-1] == "/shared"
+    fixtures = path[-9..-1] == "/fixtures" ? "" : "fixtures"
+    if File.respond_to?(:realpath)
+      path = File.realpath(path)
+    else
+      path = File.expand_path(path)
+    end
+    File.join(path, fixtures, args)
+  end
+end