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27 lines
723 B
Ruby
27 lines
723 B
Ruby
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require File.expand_path('../../../spec_helper', __FILE__)
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require 'matrix'
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describe "Matrix.normal?" do
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# it "returns false for non normal matrices" do
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# Matrix[[0, 1], [1, 2]].normal?.should == false
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# end
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it "returns true for normal matrices" do
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Matrix[[1, 1, 0], [0, 1, 1], [1, 0, 1]].normal?.should == true
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Matrix[[0, Complex(0, 2)], [Complex(0, -2), 0]].normal?.should == true
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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 |rectangual_matrix|
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lambda {
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rectangual_matrix.normal?
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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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