U
    ‚åf™  ã                   @   sB   d dl Z d dlZd dlZddlmZ ddlmZ G dd„ dƒZdS )é    Né   )Úguarantee_single_callable)Útimeoutc                   @   sP   e Zd ZdZdd„ Zddd„Zddd	„Zd
d„ Zdd„ Zddd„Z	ddd„Z
dS )ÚApplicationCommunicatorz}
    Runs an ASGI application in a test mode, allowing sending of
    messages to it and retrieval of messages it sends.
    c                 C   sN   t |ƒ| _|| _t ¡ | _t ¡ | _t ¡  	tj
|  || jj| jj¡¡| _d S ©N)r   ÚapplicationÚscopeÚasyncioÚQueueÚinput_queueÚoutput_queueÚcontextvarsÚContextÚrunZcreate_taskÚgetÚputÚfuture)Úselfr   r   © r   ú3/tmp/pip-unpacked-wheel-y50br9yc/asgiref/testing.pyÚ__init__   s    


þz ApplicationCommunicator.__init__r   c                 Ã   sœ   zXt|ƒ4 I dH š8 z| j I dH  | j  ¡  W n tjk
rD   Y nX W 5 Q I dH R X W 5 | j  ¡ s–| j  ¡  z| j I dH  W n tjk
r”   Y nX X dS )zV
        Waits for the application to stop itself and returns any exceptions.
        N)r   ÚdoneÚcancelr	   ÚCancelledErrorÚasync_timeoutÚresult)r   r   r   r   r   Úwait   s    

zApplicationCommunicator.waitTc                 C   s(   | j  ¡ s| j  ¡  n|r$| j  ¡  d S r   )r   r   r   r   )r   Ú
exceptionsr   r   r   Ústop0   s    
zApplicationCommunicator.stopc                 C   s*   z| j dd W n tk
r$   Y nX d S )NF)r   )r   ÚRuntimeError)r   r   r   r   Ú__del__7   s    zApplicationCommunicator.__del__c                 Ã   s   | j  |¡I dH  dS )z;
        Sends a single message to the application
        N)r   r   )r   Úmessager   r   r   Ú
send_input?   s    z"ApplicationCommunicator.send_inputc                 Ã   sÐ   | j  ¡ r| j  ¡  zFt|ƒ4 I dH š& | j ¡ I dH W  5 Q I dH R £ W S Q I dH R X W np tjk
rÊ } zP| j  ¡ r„| j  ¡  n2| j  ¡  z| j I dH  W n tj	k
r´   Y nX |‚W 5 d}~X Y nX dS )zX
        Receives a single message from the application, with optional timeout.
        N)
r   r   r   r   r   r   r	   ÚTimeoutErrorr   r   )r   r   Úer   r   r   Úreceive_outputF   s    

4

z&ApplicationCommunicator.receive_outputçš™™™™™¹?ç{®Gáz„?c                 Ã   sB   t  ¡ }t  ¡ | |k r8| j ¡ s&dS t |¡I dH  q| j ¡ S )zO
        Checks that there is no message to receive in the given time.
        FN)ÚtimeÚ	monotonicr   Úemptyr	   Úsleep)r   r   ÚintervalÚstartr   r   r   Úreceive_nothing]   s    
z'ApplicationCommunicator.receive_nothingN)r   )T)r   )r&   r'   )Ú__name__Ú
__module__Ú__qualname__Ú__doc__r   r   r   r    r"   r%   r.   r   r   r   r   r   	   s   


r   )r	   r   r(   Zcompatibilityr   r   r   r   r   r   r   r   Ú<module>   s
   