buildBrowserChannel example

    /** * @dataProvider defaultFlashMessageImportanceDataProvider */
    public function testImportanceLevelIsReflectedInFlashMessageType(
        FlashMessageImportanceMapperInterface $mapper,
        string $importance,
        string $expectedFlashMessageType
    ) {
        $session = $this->createMock(Session::class);
        $session->method('getFlashBag')->willReturn(new FlashBag());
        $browserChannel = $this->buildBrowserChannel($session, $mapper);
        $notification = new Notification();
        $notification->importance($importance);
        $recipient = new Recipient('hello@example.com');

        $browserChannel->notify($notification, $recipient);

        $this->assertEquals($expectedFlashMessageType, array_key_first($session->getFlashBag()->all()));
    }

    public function testUnknownImportanceMappingIsReported()
    {