NsplTest\FTest::testMemoized PHP Метод

    public function testMemoized()
    {
        $calculationsPerformed = 0;
        $f = function ($arg1, $arg2) use(&$calculationsPerformed) {
            ++$calculationsPerformed;
            return $arg1;
        };
        $object = (object) array('name' => 'Hello wordl', 'answer' => 42);
        $memoized = memoized($f);
        $result = $memoized(1, 'a');
        $this->assertEquals(1, $result);
        $this->assertEquals(1, $calculationsPerformed);
        $result = $memoized(1, 'a');
        $this->assertEquals(1, $result);
        $this->assertEquals(1, $calculationsPerformed);
        $result = $memoized(1, ['b']);
        $result = $memoized(1, ['b']);
        $this->assertEquals(1, $result);
        $this->assertEquals(2, $calculationsPerformed);
        $result = $memoized(null, ['b']);
        $result = $memoized(null, ['b']);
        $this->assertEquals(null, $result);
        $this->assertEquals(3, $calculationsPerformed);
        $result = $memoized($object, true);
        $result = $memoized($object, true);
        $this->assertEquals($object, $result);
        $this->assertEquals(4, $calculationsPerformed);
        $calculationsPerformed = 0;
        $memoized = call_user_func(memoized, $f);
        $result = $memoized(1, 'a');
        $this->assertEquals(1, $result);
        $this->assertEquals(1, $calculationsPerformed);
        $result = $memoized(1, 'a');
        $this->assertEquals(1, $result);
        $this->assertEquals(1, $calculationsPerformed);
        $result = $memoized(1, ['b']);
        $result = $memoized(1, ['b']);
        $this->assertEquals(1, $result);
        $this->assertEquals(2, $calculationsPerformed);
        $result = $memoized(null, ['b']);
        $result = $memoized(null, ['b']);
        $this->assertEquals(null, $result);
        $this->assertEquals(3, $calculationsPerformed);
        $result = $memoized($object, true);
        $result = $memoized($object, true);
        $this->assertEquals($object, $result);
        $this->assertEquals(4, $calculationsPerformed);
        $this->assertEquals('\\nspl\\f\\memoized', memoized);
    }