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36 lines
1.1 KiB
Ruby
36 lines
1.1 KiB
Ruby
require_relative '../../spec_helper'
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ruby_version_is ""..."3.1" do
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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]].should_not.unitary?
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Matrix[[0, Complex(0, 2)], [Complex(0, 2), 0]].should_not.unitary?
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Matrix[[1, 1, 0], [0, 1, 1], [1, 0, 1]].should_not.unitary?
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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]].should.unitary?
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end
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version_is((Matrix::const_defined?(:VERSION) ? Matrix::VERSION : "0.1.0"), "0.3.0") do
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it "returns true for unitary matrices with a Complex and a negative #imag" do
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Matrix[[0, Complex(0, 1)], [Complex(0, -1), 0]].should.unitary?
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end
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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.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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end
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