require File.expand_path('../../../spec_helper', __FILE__)
require File.expand_path('../fixtures/classes', __FILE__)
require 'matrix'

describe "Matrix.column_vector" do

  it "returns a single column Matrix when called with an Array" do
    m = Matrix.column_vector([4,5,6])
    m.should be_an_instance_of(Matrix)
    m.should == Matrix[ [4],[5],[6] ]
  end

  ruby_bug "redmine:1532", "1.8.7" do
    it "returns an empty Matrix when called with an empty Array" do
      m = Matrix.column_vector([])
      m.should be_an_instance_of(Matrix)
      m.row_size.should == 0
      m.column_size.should == 1
    end
  end

  ruby_version_is ""..."1.9" do
    describe "for a subclass of Matrix" do
      it "returns an instance of Matrix" do
        MatrixSub.column_vector([4,5,6]).should be_an_instance_of(Matrix)
      end
    end
  end

  ruby_version_is "1.9" do
    describe "for a subclass of Matrix" do
      it "returns an instance of that subclass" do
        MatrixSub.column_vector([4,5,6]).should be_an_instance_of(MatrixSub)
      end
    end
  end
end