f8db719bfa
Make unit tests use a mock version of PyAudio, while making integration tests using the real version. If no real microphone is available, these integration tests are skipped. ref: N25B-119
98 lines
3.8 KiB
Python
98 lines
3.8 KiB
Python
import random
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import sys
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from StringIO import StringIO
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import mock
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from robot_interface.utils.microphone import choose_mic_default, choose_mic_interactive, get_microphones
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class MicrophoneUtils(object):
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"""Shared tests for any PyAudio-like implementation, e.g. mock and real."""
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def test_choose_mic_default(self, pyaudio_instance):
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"""
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The result must contain at least "index", as this is used to identify the microphone.
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The "name" is used for logging, so it should also exist.
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It must have one or more channels.
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Lastly it must be capable of sending at least 16000 samples per second.
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"""
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result = choose_mic_default(pyaudio_instance)
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assert "index" in result
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assert isinstance(result["index"], (int, long))
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assert "name" in result
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assert isinstance(result["name"], (str, unicode))
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assert "maxInputChannels" in result
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assert isinstance(result["maxInputChannels"], (int, long))
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assert result["maxInputChannels"] > 0
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assert "defaultSampleRate" in result
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assert isinstance(result["defaultSampleRate"], float)
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assert result["defaultSampleRate"] >= 16000
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def test_choose_mic_interactive_input_not_int(self, pyaudio_instance, mocker):
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"""
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First mock an input that's not an integer, then a valid integer. There should be no errors.
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"""
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mock_input = mocker.patch("__builtin__.raw_input", side_effect=["not an integer", "0"])
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fake_out = StringIO()
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mocker.patch.object(sys, "stdout", fake_out)
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result = choose_mic_interactive(pyaudio_instance)
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assert "index" in result
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assert isinstance(result["index"], (int, long))
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assert result["index"] == 0
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assert mock_input.called
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assert any(p.startswith("Please enter a number") for p in fake_out.getvalue().splitlines())
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def test_choose_mic_interactive_negative_index(self, pyaudio_instance, mocker):
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"""
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Make sure that the interactive method does not allow negative integers as input.
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"""
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mock_input = mocker.patch("__builtin__.raw_input", side_effect=["-1", "0"])
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fake_out = StringIO()
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mocker.patch.object(sys, "stdout", fake_out)
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result = choose_mic_interactive(pyaudio_instance)
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assert "index" in result
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assert isinstance(result["index"], (int, long))
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assert result["index"] == 0
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assert mock_input.called
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assert any(p.startswith("Please enter a number") for p in fake_out.getvalue().splitlines())
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def test_choose_mic_interactive_index_too_high(self, pyaudio_instance, mocker):
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"""
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Make sure that the interactive method does not allow indices higher than the highest mic index.
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"""
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real_count = len(list(get_microphones(pyaudio_instance)))
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mock_input = mocker.patch("__builtin__.raw_input", side_effect=[str(real_count), "0"])
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fake_out = StringIO()
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mocker.patch.object(sys, "stdout", fake_out)
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result = choose_mic_interactive(pyaudio_instance)
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assert "index" in result
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assert isinstance(result["index"], (int, long))
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assert mock_input.called
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assert any(p.startswith("Please enter a number") for p in fake_out.getvalue().splitlines())
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def test_choose_mic_interactive_random_index(self, pyaudio_instance, mocker):
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"""
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Get a random index from the list of available mics, make sure it's correct.
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"""
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microphones = list(get_microphones(pyaudio_instance))
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random_index = random.randrange(len(microphones))
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mocker.patch("__builtin__.raw_input", side_effect=[str(random_index)])
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result = choose_mic_interactive(pyaudio_instance)
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assert "index" in result
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assert isinstance(result["index"], (int, long))
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assert result["index"] == microphones[random_index]["index"]
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