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

13 files changed, 121 insertions, 0 deletions

diff --git a/spec/rubyspec/core/nil/and_spec.rb b/spec/rubyspec/core/nil/and_spec.rb
new file mode 100644
index 0000000000..96e0472661
--- /dev/null
+++ b/spec/rubyspec/core/nil/and_spec.rb
@@ -0,0 +1,11 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe "NilClass#&" do
+  it "returns false" do
+    (nil & nil).should == false
+    (nil & true).should == false
+    (nil & false).should == false
+    (nil & "").should == false
+    (nil & mock('x')).should == false
+  end
+end
diff --git a/spec/rubyspec/core/nil/inspect_spec.rb b/spec/rubyspec/core/nil/inspect_spec.rb
new file mode 100644
index 0000000000..f7a5e7d1af
--- /dev/null
+++ b/spec/rubyspec/core/nil/inspect_spec.rb
@@ -0,0 +1,7 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe "NilClass#inspect" do
+  it "returns the string 'nil'" do
+    nil.inspect.should == "nil"
+  end
+end
diff --git a/spec/rubyspec/core/nil/nil_spec.rb b/spec/rubyspec/core/nil/nil_spec.rb
new file mode 100644
index 0000000000..8369b21a66
--- /dev/null
+++ b/spec/rubyspec/core/nil/nil_spec.rb
@@ -0,0 +1,7 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe "NilClass#nil?" do
+  it "returns true" do
+    nil.nil?.should == true
+  end
+end
diff --git a/spec/rubyspec/core/nil/or_spec.rb b/spec/rubyspec/core/nil/or_spec.rb
new file mode 100644
index 0000000000..2c5811b8c2
--- /dev/null
+++ b/spec/rubyspec/core/nil/or_spec.rb
@@ -0,0 +1,11 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe "NilClass#|" do
+  it "returns false if other is nil or false, otherwise true" do
+    (nil | nil).should == false
+    (nil | true).should == true
+    (nil | false).should == false
+    (nil | "").should == true
+    (nil | mock('x')).should == true
+  end
+end
diff --git a/spec/rubyspec/core/nil/rationalize_spec.rb b/spec/rubyspec/core/nil/rationalize_spec.rb
new file mode 100644
index 0000000000..1292cfd250
--- /dev/null
+++ b/spec/rubyspec/core/nil/rationalize_spec.rb
@@ -0,0 +1,16 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe "NilClass#rationalize" do
+  it "returns 0/1" do
+    nil.rationalize.should == Rational(0, 1)
+  end
+
+  it "ignores a single argument" do
+    nil.rationalize(0.1).should == Rational(0, 1)
+  end
+
+  it "raises ArgumentError when passed more than one argument" do
+    lambda { nil.rationalize(0.1, 0.1) }.should raise_error(ArgumentError)
+    lambda { nil.rationalize(0.1, 0.1, 2) }.should raise_error(ArgumentError)
+  end
+end
diff --git a/spec/rubyspec/core/nil/to_a_spec.rb b/spec/rubyspec/core/nil/to_a_spec.rb
new file mode 100644
index 0000000000..6febd88c40
--- /dev/null
+++ b/spec/rubyspec/core/nil/to_a_spec.rb
@@ -0,0 +1,7 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe "NilClass#to_a" do
+  it "returns an empty array" do
+    nil.to_a.should == []
+  end
+end
diff --git a/spec/rubyspec/core/nil/to_c_spec.rb b/spec/rubyspec/core/nil/to_c_spec.rb
new file mode 100644
index 0000000000..5b768b4afc
--- /dev/null
+++ b/spec/rubyspec/core/nil/to_c_spec.rb
@@ -0,0 +1,7 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe "NilClass#to_c" do
+  it "returns Complex(0, 0)" do
+    nil.to_c.should eql(Complex(0, 0))
+  end
+end
diff --git a/spec/rubyspec/core/nil/to_f_spec.rb b/spec/rubyspec/core/nil/to_f_spec.rb
new file mode 100644
index 0000000000..d4890cd42b
--- /dev/null
+++ b/spec/rubyspec/core/nil/to_f_spec.rb
@@ -0,0 +1,11 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe "NilClass#to_f" do
+  it "returns 0.0" do
+    nil.to_f.should == 0.0
+  end
+
+  it "does not cause NilClass to be coerced to Float" do
+    (0.0 == nil).should == false
+  end
+end
diff --git a/spec/rubyspec/core/nil/to_h_spec.rb b/spec/rubyspec/core/nil/to_h_spec.rb
new file mode 100644
index 0000000000..5300802d19
--- /dev/null
+++ b/spec/rubyspec/core/nil/to_h_spec.rb
@@ -0,0 +1,8 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe "NilClass#to_h" do
+  it "returns an empty hash" do
+    nil.to_h.should == {}
+    nil.to_h.default.should == nil
+  end
+end
diff --git a/spec/rubyspec/core/nil/to_i_spec.rb b/spec/rubyspec/core/nil/to_i_spec.rb
new file mode 100644
index 0000000000..91282822a8
--- /dev/null
+++ b/spec/rubyspec/core/nil/to_i_spec.rb
@@ -0,0 +1,11 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe "NilClass#to_i" do
+  it "returns 0" do
+    nil.to_i.should == 0
+  end
+
+  it "does not cause NilClass to be coerced to Fixnum" do
+    (0 == nil).should == false
+  end
+end
diff --git a/spec/rubyspec/core/nil/to_r_spec.rb b/spec/rubyspec/core/nil/to_r_spec.rb
new file mode 100644
index 0000000000..efbd2f5540
--- /dev/null
+++ b/spec/rubyspec/core/nil/to_r_spec.rb
@@ -0,0 +1,7 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe "NilClass#to_r" do
+  it "returns 0/1" do
+    nil.to_r.should == Rational(0, 1)
+  end
+end
diff --git a/spec/rubyspec/core/nil/to_s_spec.rb b/spec/rubyspec/core/nil/to_s_spec.rb
new file mode 100644
index 0000000000..935bb63a9b
--- /dev/null
+++ b/spec/rubyspec/core/nil/to_s_spec.rb
@@ -0,0 +1,7 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe "NilClass#to_s" do
+  it "returns the string ''" do
+    nil.to_s.should == ""
+  end
+end
diff --git a/spec/rubyspec/core/nil/xor_spec.rb b/spec/rubyspec/core/nil/xor_spec.rb
new file mode 100644
index 0000000000..7f2131e795
--- /dev/null
+++ b/spec/rubyspec/core/nil/xor_spec.rb
@@ -0,0 +1,11 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+
+describe "NilClass#^" do
+  it "returns false if other is nil or false, otherwise true" do
+    (nil ^ nil).should == false
+    (nil ^ true).should == true
+    (nil ^ false).should == false
+    (nil ^ "").should == true
+    (nil ^ mock('x')).should == true
+  end
+end