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29 lines
754 B
Ruby
29 lines
754 B
Ruby
require_relative '../../spec_helper'
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require 'matrix'
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describe "Matrix.symmetric?" do
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it "returns true for a symmetric Matrix" do
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Matrix[[1, 2, Complex(0, 3)], [2, 4, 5], [Complex(0, 3), 5, 6]].symmetric?.should be_true
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end
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it "returns true for a 0x0 empty matrix" do
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Matrix.empty.symmetric?.should be_true
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end
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it "returns false for an asymmetric Matrix" do
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Matrix[[1, 2],[-2, 1]].symmetric?.should be_false
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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.symmetric?
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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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