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29 lines
877 B
Ruby
29 lines
877 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.unitary?" do
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it "returns false for non unitary matrices" do
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Matrix[[0, 1], [1, 2]].unitary?.should == false
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Matrix[[0, Complex(0, 2)], [Complex(0, 2), 0]].unitary?.should == false
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Matrix[[0, Complex(0, 1)], [Complex(0, -1), 0]].unitary?.should == false
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Matrix[[1, 1, 0], [0, 1, 1], [1, 0, 1]].unitary?.should == false
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end
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it "returns true for unitary matrices" do
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Matrix[[0, Complex(0, 1)], [Complex(0, 1), 0]].unitary?.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.unitary?
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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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