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26 lines
679 B
Ruby
26 lines
679 B
Ruby
require_relative '../../spec_helper'
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require 'matrix'
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describe "Matrix.orthogonal?" do
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it "returns false for non orthogonal matrices" do
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Matrix[[0, 1], [1, 2]].should_not.orthogonal?
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Matrix[[1, 1, 0], [0, 1, 1], [1, 0, 1]].should_not.orthogonal?
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end
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it "returns true for orthogonal matrices" do
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Matrix[[0, 1], [1, 0]].should.orthogonal?
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end
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it "raises an error for rectangular matrices" do
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[
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Matrix[[0], [0]],
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Matrix[[0, 0]],
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Matrix.empty(0, 2),
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Matrix.empty(2, 0),
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].each do |rectangular_matrix|
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-> {
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rectangular_matrix.orthogonal?
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}.should raise_error(Matrix::ErrDimensionMismatch)
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end
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end
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end
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