seregazhuk\PinterestBot\Api\Providers\Conversations::sendMessage PHP Method

    public function sendMessage($userIds, $text, $pinId = null)
    {
        $messageData = $this->buildMessageData($text, $pinId);
        return $this->callSendMessage($userIds, [], $messageData);
    }

 public function testSendMessage()
 {
     $response = $this->createMessageSendResponse();
     $this->mock->expects($this->at(1))->method('exec')->willReturn($response);
     $this->mock->expects($this->at(3))->method('exec')->willReturn(null);
     $userId = '0000000000000';
     $message = 'test';
     $this->assertTrue($this->provider->sendMessage($userId, $message));
     $this->assertFalse($this->provider->sendMessage($userId, $message));
 }