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, 55 insertions, 0 deletions

diff --git a/spec/rubyspec/library/matrix/divide_spec.rb b/spec/rubyspec/library/matrix/divide_spec.rb
new file mode 100644
index 0000000000..b602d7d10f
--- /dev/null
+++ b/spec/rubyspec/library/matrix/divide_spec.rb
@@ -0,0 +1,55 @@
+require File.expand_path('../../../spec_helper', __FILE__)
+require File.expand_path('../spec_helper', __FILE__)
+require File.expand_path('../fixtures/classes', __FILE__)
+require 'matrix'
+
+describe "Matrix#/" do
+  before :each do
+    @a = Matrix[ [1, 2], [3, 4] ]
+    @b = Matrix[ [4, 5], [6, 7] ]
+    @c = Matrix[ [1.2, 2.4], [3.6, 4.8] ]
+  end
+
+  it "returns the result of dividing self by another Matrix" do
+    (@a / @b).should be_close_to_matrix([[2.5, -1.5], [1.5, -0.5]])
+  end
+
+  conflicts_with :Prime do
+    it "returns the result of dividing self by a Fixnum" do
+      (@a / 2).should == Matrix[ [0, 1], [1, 2] ]
+    end
+  end
+
+  conflicts_with :Prime do
+    it "returns the result of dividing self by a Bignum" do
+      (@a / bignum_value).should == Matrix[ [0, 0], [0, 0] ]
+    end
+  end
+
+  it "returns the result of dividing self by a Float" do
+    (@c / 1.2).should == Matrix[ [1, 2], [3, 4] ]
+  end
+
+  it "raises a Matrix::ErrDimensionMismatch if the matrices are different sizes" do
+    lambda { @a / Matrix[ [1] ] }.should raise_error(Matrix::ErrDimensionMismatch)
+  end
+
+  it "returns an instance of Matrix" do
+    (@a / @b).should be_kind_of(Matrix)
+  end
+
+  describe "for a subclass of Matrix" do
+    it "returns an instance of that subclass" do
+      m = MatrixSub.ins
+      (m/m).should be_an_instance_of(MatrixSub)
+      (m/1).should be_an_instance_of(MatrixSub)
+    end
+  end
+
+  it "raises a TypeError if other is of wrong type" do
+    lambda { @a / nil        }.should raise_error(TypeError)
+    lambda { @a / "a"        }.should raise_error(TypeError)
+    lambda { @a / [ [1, 2] ] }.should raise_error(TypeError)
+    lambda { @a / Object.new }.should raise_error(TypeError)
+  end
+end