MathPHP\SetTheory\SetOperationsTest::testIntersectWithArrays PHP Метод

    public function testIntersectWithArrays()
    {
        $A = new Set([1, 2, [1, 2, 3]]);
        $B = new Set([2, 3, [2, 3, 4]]);
        $A∩B = $A->intersect($B);
        $expected = new Set([2]);
        $this->assertEquals($expected, $A∩B);
        $this->assertEquals($expected->asArray(), $A∩B->asArray());
        $A = new Set([1, 2, [1, 2, 3]]);
        $B = new Set([2, 3, [2, 3, 4], [1, 2, 3]]);
        $A∩B = $A->intersect($B);
        $expected = new Set([2, [1, 2, 3]]);
        $this->assertEquals($expected, $A∩B);
        $this->assertEquals($expected->asArray(), $A∩B->asArray());
    }