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o �br � @ sp d Z ddlZddlmZmZmZmZmZ ddlm Z ddl m Z ddl m Z G dd� de�ZG d d � d e �ZdS ) z* Tests for C{await} support in Deferreds. � N)�Deferred�ensureDeferred�fail� maybeDeferred�succeed)�Clock)�Failure)�TestCasec @ s e Zd ZdZdS )�SampleExceptionz2 A specific sample exception for testing. N)�__name__� __module__� __qualname__�__doc__� r r �H/usr/lib/python3/dist-packages/twisted/internet/test/test_defer_await.pyr s r c @ s` e Zd ZdZdd� Zdd� Zdd� Zdd � Zd d � Zd d � Z dd� Z dd� Z dd� Z dd� Z dS )� AwaitTestsz@ Tests for using Deferreds in conjunction with PEP-492. c C s" t � }|�� }| �|t|�� dS )z< C{Deferred.__await__} returns an iterable. N)r � __await__� assertEqual�iter)�self�d�awaitedDeferredr r r �test_awaitReturnsIterable" s z$AwaitTests.test_awaitReturnsIterablec sX � fdd�}dd� � |� }| � |tj� t�|�}| � |t� | �|�}| �|d� dS )zU L{Deferred.fromCoroutine} will turn a coroutine into a L{Deferred}. c � s$ �t d�} | I d H � � I d H }|S )N�bar�r �r �res��run2r r �run/ s � z2AwaitTests.test_deferredFromCoroutine.<locals>.runc � � �t d�} | I d H }|S �N�foor r r r r r 5 � � z3AwaitTests.test_deferredFromCoroutine.<locals>.run2r" N)�assertIsInstance�types� CoroutineTyper � fromCoroutine�successResultOfr )r r �rr r r r r �test_deferredFromCoroutine* s z%AwaitTests.test_deferredFromCoroutinec C s. dd� }t �|� �}| �|�}| �|d� dS )zc L{Deferred.fromCoroutine} allows a function to C{await} on a L{Deferred}. c � r r! r r r r r r L r# z"AwaitTests.test_basic.<locals>.runr" N)r r' r( r �r r r r r r r � test_basicF s zAwaitTests.test_basicc C s, dd� }t |� �}| �|�}| �|d� dS )zS L{ensureDeferred} allows a function to C{await} on a L{Deferred}. c � r r! r r r r r r Z r# z0AwaitTests.test_basicEnsureDeferred.<locals>.runr" N)r r( r r+ r r r �test_basicEnsureDeferredU s z#AwaitTests.test_basicEnsureDeferredc C sD dd� }t �|� �}| �|�}| �t|j�t� | �|jjd� dS )z� An exception in a coroutine scheduled with L{Deferred.fromCoroutine} will cause the returned L{Deferred} to fire with a failure. c � s �t d�} | I d H td��)Nr" �Oh no!)r � ValueError�r r r r r i s � z&AwaitTests.test_exception.<locals>.run)r. N)r r' �failureResultOfr �type�valuer/ �argsr+ r r r �test_exceptionc s zAwaitTests.test_exceptionc sR dd� }t |�� � fdd�}| �t�|� ��}| �d|�� � | �d|�� � dS )z� When a Deferred is awaited upon that has already failed with a Failure that has a traceback, both the place that the synchronous traceback comes from and the awaiting line are shown in the traceback. c S s t � ��N)r r r r r �raisesz s zCAwaitTests.test_synchronousDeferredFailureTraceback.<locals>.raisesc � � �� I d H S r6 r r ��itr r �doomed � � zCAwaitTests.test_synchronousDeferredFailureTraceback.<locals>.doomed� , in doomed z , in raises N)r r1 r r' �assertIn� getTraceback)r r7 r; �failurer r9 r �(test_synchronousDeferredFailureTracebacks s z3AwaitTests.test_synchronousDeferredFailureTracebackc sj dd� }t � � � fdd�}t �|� �}| �|� � �|� � | �|�}| �d|�� � | �d|�� � dS )z� When a Deferred is awaited upon that later fails with a Failure that has a traceback, both the place that the synchronous traceback comes from and the awaiting line are shown in the traceback. c S s zt � � t y t� Y S w r6 )r r r r r r �returnsFailure� s �zEAwaitTests.test_asyncDeferredFailureTraceback.<locals>.returnsFailurec � r8 r6 r r r9 r r r; � r< z=AwaitTests.test_asyncDeferredFailureTraceback.<locals>.doomedr= z, in returnsFailure N)r r' �assertNoResult�errbackr1 r> r? )r rB r; �startedr@ r r9 r �"test_asyncDeferredFailureTraceback� s z-AwaitTests.test_asyncDeferredFailureTracebackc s� t � � g �� �fdd��� ��fdd�}t�|� �}� �d� | ��ddg� � �d� | ��g d �� � �d� | ��g d �� � �d� | ��g d �� | �|�}| �|d � d S ) z� A coroutine scheduled with L{Deferred.fromCoroutine} that awaits a L{Deferred} suspends its execution until the inner L{Deferred} fires. c � s: ��� d� t� } � �d| jd� | I d H �� d� dS )N� � � �Yay!��appendr � callLater�callbackr0 )�reactor�sectionsr r �runone� s � z'AwaitTests.test_twoDeep.<locals>.runonec � sP ��� d� �� I d H } �� d� t� }� �d|jd� |I d H �� d� | S )NrH � � rK )�resultr �rO rQ rP r r r � s � z$AwaitTests.test_twoDeep.<locals>.rung�������?rH rG 皙�����?)rH rG rI rR )rH rG rI rR rS rJ N)r r r' �advancer r( r+ r rU r � test_twoDeep� s zAwaitTests.test_twoDeepc s. � fdd�}� � t�|� ��}� �|d� dS )zO Awaiting an already failed Deferred will raise the exception. c � sP �z t td��I d H W dS ty' } z� �| jd� W Y d } ~ dS d } ~ ww )N�Boom)rY rH r )r r/ r r4 )�e�r r r �test� s ����z%AwaitTests.test_reraise.<locals>.testrH N)r( r r' r )r r\ r r r[ r � test_reraise� s zAwaitTests.test_reraisec sB t � � � fdd�}t�|� �}� �d� | �|�}| �|d� dS )zd Awaiting a paused & chained Deferred will give the result when it has one. c � sD �t � } t � � | �� fdd�� | �d � ��d� jd� | I d H S )Nc s � S r6 r )�ignored��d2r r �<lambda>� s z7AwaitTests.test_chained.<locals>.test.<locals>.<lambda>r �bye)r � addCallbackrN rM r0 �rO r_ r r\ � s � z%AwaitTests.test_chained.<locals>.testrV rb N)r r r' rW r( r )r r\ r r r rd r � test_chained� s zAwaitTests.test_chainedN)r r r r r r* r, r- r5 rA rF rX r] re r r r r r s + r )r r% �twisted.internet.deferr r r r r �twisted.internet.taskr �twisted.python.failurer �twisted.trial.unittestr � Exceptionr r r r r r �<module> s
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