MCordingley\LinearAlgebraTest\MatrixTest::testAdjugate PHP Method

    public function testAdjugate()
    {
        $matrix = new Matrix([[1, -1, 2], [4, 0, 6], [0, 1, -1]]);
        $adjoint = $matrix->adjugate();
        static::assertEquals(-6, $adjoint->get(0, 0));
        static::assertEquals(1, $adjoint->get(0, 1));
        static::assertEquals(-6, $adjoint->get(0, 2));
        static::assertEquals(4, $adjoint->get(1, 0));
        static::assertEquals(-1, $adjoint->get(1, 1));
        static::assertEquals(2, $adjoint->get(1, 2));
        static::assertEquals(4, $adjoint->get(2, 0));
        static::assertEquals(-1, $adjoint->get(2, 1));
        static::assertEquals(4, $adjoint->get(2, 2));
    }