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#!/usr/bin/env python
# -*- encoding: utf-8 -*-
# CREATED:2015-02-14 16:20:25 by Brian McFee <brian.mcfee@nyu.edu>
# unit tests for librosa cache
"""Tests for librosa.cache"""
import os
import sys
import tempfile
import shutil
import numpy as np
import pytest
import librosa._cache
# Disable any initial cache settings
for key in ["DIR", "MMAP", "COMPRESS", "VERBOSE", "LEVEL"]:
try:
os.environ.pop("LIBROSA_CACHE_{:s}".format(key))
except KeyError:
pass
@pytest.fixture
def local_cache():
cache_dir = tempfile.mkdtemp()
cache = librosa._cache.CacheManager(cache_dir, verbose=0, level=10)
yield cache
shutil.rmtree(cache_dir)
def func(x):
return np.arange(x)
def test_cache_disabled():
# When there's no cache directory in the environment,
# librosa.cache is a no-op.
cache = librosa._cache.CacheManager(None, verbose=0, level=10)
func_cache = cache(level=-10)(func)
assert func == func_cache
def test_cache_enabled(local_cache):
local_cache.clear()
func_cache = local_cache(level=-10)(func)
# The cache should be active now, so func_cache should be a different object from func
assert func_cache != func
# issue three calls to func
y = func(5)
for i in range(3):
assert np.allclose(func_cache(5), y)
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