我无法想出一个 pytest 函数来测试以下函数：
有没有办法模拟任何函数/对象，这样我就可以伪造每次运行测试时一致的转录结果，而不向实际的 Azure 语音服务发送任何数据（因此不计费）？
def transcribe_azure_speech_file(speech_file):
speech_config = speechsdk.SpeechConfig(subscription=SUBSCRIPTION_KEY, region=REGION)
audio_input = speechsdk.AudioConfig(filename=speech_file)
auto_source_lang_config = speechsdk.AutoDetectSourceLanguageConfig(languages=["en-US"])
speech_recognizer = speechsdk.SpeechRecognizer(
speech_config=speech_config,
audio_config=audio_input,
auto_detect_source_language_config=auto_source_lang_config
)
transcripts = []
done = False
def _stop_cb(evt):
"""callback that signals to stop continuous recognition upon receiving an event `evt`"""
print('CLOSING on {}'.format(evt))
nonlocal done
done = True
def _recognized_event(evt):
result = evt.result
start_time = result.offset / 10e6
end_time = start_time + result.duration / 10e6
transcripts.append(
{
"transcript": result.text,
"start_time": start_time,
"end_time": end_time,
}
)
# connect callbacks to the events fired by the speech recognizer
speech_recognizer.recognized.connect(_recognized_event)
# stop continuous recognition on either session stopped or canceled events
speech_recognizer.session_stopped.connect(_stop_cb)
speech_recognizer.canceled.connect(_stop_cb)
# start continuous speech recognition
speech_recognizer.start_continuous_recognition()
while not done:
time.sleep(0.25)
speech_recognizer.stop_continuous_recognition()
return transcripts
