require_relative '../../spec_helper'

ruby_version_is ""..."3.1" do
  require_relative 'fixtures/classes'
  require 'matrix'

  describe "Matrix.row_vector" do

    it "returns a Matrix" do
      Matrix.row_vector([]).should be_an_instance_of(Matrix)
    end

    it "returns a single-row Matrix with the specified values" do
      Matrix.row_vector([1,2]).should == Matrix[ [1,2] ]
    end

    it "returns a 1x0 matrix when called with an empty Array" do
      Matrix.row_vector([]).should == Matrix[ [] ]
    end

    describe "for a subclass of Matrix" do
      it "returns an instance of that subclass" do
        MatrixSub.row_vector([1]).should be_an_instance_of(MatrixSub)
      end
    end
  end
end