MathPHP\SetTheory\SetOperationsTest::testAddWithObjects PHP Метод

    public function testAddWithObjects()
    {
        $set = new Set([1, 2, 3]);
        $vector = new Vector([1, 2, 3]);
        $matrix = new Matrix([[1, 2, 3], [2, 3, 4]]);
        $set->add($vector);
        $set->add($matrix);
        $this->assertEquals(5, count($set));
        $this->assertEquals(5, count($set->asArray()));
        $objects = 0;
        foreach ($set as $key => $value) {
            if ($value instanceof \MathPHP\LinearAlgebra\Vector) {
                $objects++;
                $vector_key = get_class($value) . '(' . spl_object_hash($vector) . ')';
                $this->assertEquals($vector_key, $key);
                $this->assertEquals($vector, $value);
            }
            if ($value instanceof \MathPHP\LinearAlgebra\Matrix) {
                $objects++;
                $matrix_key = get_class($value) . '(' . spl_object_hash($matrix) . ')';
                $this->assertEquals($matrix_key, $key);
                $this->assertEquals($matrix, $value);
            }
        }
        // There should have been two objects (vector and matrix)
        $this->assertEquals(2, $objects);
    }