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, 29 insertions, 0 deletions

diff --git a/spec/rubyspec/core/complex/rationalize_spec.rb b/spec/rubyspec/core/complex/rationalize_spec.rb
new file mode 100644
index 0000000000..2dd1e9b122
--- /dev/null
+++ b/spec/rubyspec/core/complex/rationalize_spec.rb
@@ -0,0 +1,29 @@
+describe "Complex#rationalize" do
+  it "raises RangeError if self has non-zero imaginary part" do
+    lambda { Complex(1,5).rationalize }.should raise_error(RangeError)
+  end
+
+  it "raises RangeError if self has 0.0 imaginary part" do
+    lambda { Complex(1,0.0).rationalize }.should raise_error(RangeError)
+  end
+
+  it "returns a Rational if self has zero imaginary part" do
+    Complex(1,0).rationalize.should == Rational(1,1)
+    Complex(2<<63+5).rationalize.should == Rational(2<<63+5,1)
+  end
+
+  it "sends #rationalize to the real part" do
+    real = mock_numeric('real')
+    real.should_receive(:rationalize).with(0.1).and_return(:result)
+    Complex(real, 0).rationalize(0.1).should == :result
+  end
+
+  it "ignores a single argument" do
+    Complex(1,0).rationalize(0.1).should == Rational(1,1)
+  end
+
+  it "raises ArgumentError when passed more than one argument" do
+    lambda { Complex(1,0).rationalize(0.1, 0.1) }.should raise_error(ArgumentError)
+    lambda { Complex(1,0).rationalize(0.1, 0.1, 2) }.should raise_error(ArgumentError)
+  end
+end