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, 51 insertions, 0 deletions

diff --git a/spec/rubyspec/language/not_spec.rb b/spec/rubyspec/language/not_spec.rb
new file mode 100644
index 0000000000..a0cf6b15a6
--- /dev/null
+++ b/spec/rubyspec/language/not_spec.rb
@@ -0,0 +1,51 @@
+require File.expand_path('../../spec_helper', __FILE__)
+
+describe "The not keyword" do
+  it "negates a `true' value" do
+    (not true).should be_false
+    (not 'true').should be_false
+  end
+
+  it "negates a `false' value" do
+    (not false).should be_true
+    (not nil).should be_true
+  end
+
+  it "accepts an argument" do
+    not(true).should be_false
+  end
+
+  it "returns false if the argument is true" do
+    (not(true)).should be_false
+  end
+
+  it "returns true if the argument is false" do
+    (not(false)).should be_true
+  end
+
+  it "returns true if the argument is nil" do
+    (not(nil)).should be_true
+  end
+end
+
+describe "The `!' keyword" do
+  it "negates a `true' value" do
+    (!true).should be_false
+    (!'true').should be_false
+  end
+
+  it "negates a `false' value" do
+    (!false).should be_true
+    (!nil).should be_true
+  end
+
+  it "doubled turns a truthful object into `true'" do
+    (!!true).should be_true
+    (!!'true').should be_true
+  end
+
+  it "doubled turns a not truthful object into `false'" do
+    (!!false).should be_false
+    (!!nil).should be_false
+  end
+end