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require_relative '../../spec_helper'
require 'matrix'
describe "Matrix.hermitian?" do
it "returns true for a hermitian Matrix" do
Matrix[[1, 2, Complex(0, 3)], [2, 4, 5], [Complex(0, -3), 5, 6]].hermitian?.should be_true
end
it "returns true for a 0x0 empty matrix" do
Matrix.empty.hermitian?.should be_true
end
it "returns false for an asymmetric Matrix" do
Matrix[[1, 2],[-2, 1]].hermitian?.should be_false
end
it "raises an error for rectangular matrices" do
[
Matrix[[0], [0]],
Matrix[[0, 0]],
Matrix.empty(0, 2),
Matrix.empty(2, 0),
].each do |rectangular_matrix|
-> {
rectangular_matrix.hermitian?
}.should raise_error(Matrix::ErrDimensionMismatch)
end
end
it "returns false for a matrix with complex values on the diagonal" do
Matrix[[Complex(1,1)]].hermitian?.should be_false
Matrix[[Complex(1,0)]].hermitian?.should be_true
end
end
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