symfony
diff --git a/‎src/Symfony/Component/Notifier/Bridge/Slack/SlackTransport.php
Copy file name to clipboardExpand all lines: src/Symfony/Component/Notifier/Bridge/Slack/SlackTransport.php
+1-1Lines changed: 1 addition & 1 deletion b/‎src/Symfony/Component/Notifier/Bridge/Slack/SlackTransport.php
Copy file name to clipboardExpand all lines: src/Symfony/Component/Notifier/Bridge/Slack/SlackTransport.php
+1-1Lines changed: 1 addition & 1 deletion
diff --git a/‎src/Symfony/Component/Notifier/Bridge/Slack/Tests/SlackTransportTest.php
Copy file name to clipboardExpand all lines: src/Symfony/Component/Notifier/Bridge/Slack/Tests/SlackTransportTest.php
+50Lines changed: 50 additions & 0 deletions b/‎src/Symfony/Component/Notifier/Bridge/Slack/Tests/SlackTransportTest.php
Copy file name to clipboardExpand all lines: src/Symfony/Component/Notifier/Bridge/Slack/Tests/SlackTransportTest.php
+50Lines changed: 50 additions & 0 deletions
@@ -83,7 +83,7 @@ protected function doSend(MessageInterface $message): SentMessage
         }
         $options['text'] = $message->getSubject();
         $response = $this->client->request('POST', 'https://'.$this->getEndpoint().'/api/chat.postMessage', [
-            'json' => array_filter($options),
+            'json' => array_filter($options, fn ($value) => !\in_array($value, ['', [], null], true)),
             'auth_bearer' => $this->accessToken,
             'headers' => [
                 'Content-Type' => 'application/json; charset=utf-8',
 
@@ -174,6 +174,56 @@ public function testSendWithNotification()
         $this->assertSame('1503435956.000247', $sentMessage->getMessageId());
     }
 
+    /**
+     * @testWith [true]
+     *           [false]
+     */
+    public function testSendWithBooleanOptionValue(bool $value)
+    {
+        $channel = 'testChannel';
+        $message = 'testMessage';
+
+        $response = $this->createMock(ResponseInterface::class);
+
+        $response->expects($this->exactly(2))
+            ->method('getStatusCode')
+            ->willReturn(200);
+
+        $response->expects($this->once())
+            ->method('getContent')
+            ->willReturn(json_encode(['ok' => true, 'ts' => '1503435956.000247']));
+
+        $options = new SlackOptions();
+        $options->asUser($value);
+        $options->linkNames($value);
+        $options->mrkdwn($value);
+        $options->unfurlLinks($value);
+        $options->unfurlMedia($value);
+        $notification = new Notification($message);
+        $chatMessage = ChatMessage::fromNotification($notification);
+        $chatMessage->options($options);
+
+        $expectedBody = json_encode([
+            'as_user' => $value,
+            'channel' => $channel,
+            'link_names' => $value,
+            'mrkdwn' => $value,
+            'text' => $message,
+            'unfurl_links' => $value,
+            'unfurl_media' => $value,
+        ]);
+
+        $client = new MockHttpClient(function (string $method, string $url, array $options = []) use ($response, $expectedBody): ResponseInterface {
+            $this->assertJsonStringEqualsJsonString($expectedBody, $options['body']);
+
+            return $response;
+        });
+
+        $transport = self::createTransport($client, $channel);
+
+        $transport->send($chatMessage);
+    }
+
     public function testSendWithInvalidOptions()
     {
         $this->expectException(LogicException::class);