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, 32 insertions, 0 deletions

diff --git a/spec/mspec/lib/mspec/matchers/include.rb b/spec/mspec/lib/mspec/matchers/include.rb
new file mode 100644
index 0000000000..b4e54158d1
--- /dev/null
+++ b/spec/mspec/lib/mspec/matchers/include.rb
@@ -0,0 +1,32 @@
+class IncludeMatcher
+  def initialize(*expected)
+    @expected = expected
+  end
+
+  def matches?(actual)
+    @actual = actual
+    @expected.each do |e|
+      @element = e
+      unless @actual.include?(e)
+        return false
+      end
+    end
+    return true
+  end
+
+  def failure_message
+    ["Expected #{@actual.inspect}", "to include #{@element.inspect}"]
+  end
+
+  def negative_failure_message
+    ["Expected #{@actual.inspect}", "not to include #{@element.inspect}"]
+  end
+end
+
+# Cannot override #include at the toplevel in MRI
+module MSpec
+  def include(*expected)
+    IncludeMatcher.new(*expected)
+  end
+  module_function :include
+end