MathPHP\SetTheory\SetAxiomsTest::testEqualSetsAreSubsetsInBothDirections PHP Method

    public function testEqualSetsAreSubsetsInBothDirections(Set $A)
    {
        $this->assertEquals($A, $A);
        $this->assertTrue($A->isSubset($A));
        $this->assertTrue($A->isSubset($A));
    }