MathPHP\SetTheory\SetOperationsTest::testAddWithMultipleObjects PHP Метод

    public function testAddWithMultipleObjects()
    {
        $set = new Set([1, 2, 3]);
        $vector1 = new Vector([1, 2, 3]);
        $vector2 = new Vector([1, 2, 3]);
        $vector3 = new Vector([4, 5, 6]);
        $matrix = new Matrix([[1, 2, 3], [2, 3, 4]]);
        $std1 = new \StdClass();
        $std2 = new \StdClass();
        $std3 = $std2;
        // Same object so this wont get added
        $set->add($vector1);
        $set->add($vector2);
        $set->add($vector3);
        $set->add($matrix);
        $set->add($std1);
        $set->add($std2);
        $set->add($std3);
        $this->assertEquals(9, count($set));
        $this->assertEquals(9, count($set->asArray()));
        $objects = 0;
        foreach ($set as $key => $value) {
            if ($value instanceof \MathPHP\LinearAlgebra\Vector) {
                $objects++;
                $this->assertInstanceOf('MathPHP\\LinearAlgebra\\Vector', $value);
            }
            if ($value instanceof \MathPHP\LinearAlgebra\Matrix) {
                $objects++;
                $this->assertInstanceOf('MathPHP\\LinearAlgebra\\Matrix', $value);
            }
            if ($value instanceof \StdClass) {
                $objects++;
                $this->assertInstanceOf('StdClass', $value);
            }
        }
        // There should have been four objects (3 vectors and 1 matrix)
        $this->assertEquals(6, $objects);
    }