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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
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