1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26
|
require File.expand_path('../../../spec_helper', __FILE__)
require 'matrix'
describe "Matrix#column_vectors" do
before(:each) do
@vectors = Matrix[ [1,2], [3,4] ].column_vectors
end
it "returns an Array" do
Matrix[ [1,2], [3,4] ].column_vectors.should be_an_instance_of(Array)
end
it "returns an Array of Vectors" do
@vectors.all? {|v| v.should be_an_instance_of(Vector)}
end
it "returns each column as a Vector" do
@vectors.should == [Vector[1,3], Vector[2,4]]
end
it "returns an empty Array for empty matrices" do
Matrix[ [] ].column_vectors.should == []
end
end
|