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b630625a4d
* Add documentation to class_pv_forecast.py. Added documentation. Beware mostly generated by ChatGPT. Signed-off-by: Bobby Noelte <b0661n0e17e@gmail.com> * Add CacheFileStore, datetime and logger utilities. The `CacheFileStore` class is a singleton-based, thread-safe key-value store for managing temporary file objects, allowing the creation, retrieval, and management of cache files. The utility modules offer a flexible logging setup (`get_logger`) and utilities to handle different date-time formats (`to_datetime`, `to_timestamp`) and timezone detection (`to_timezone). - Cache files are automatically valid for the the current date unless specified otherwise. This is to mimic the current behaviour used in several classes. - The logger supports rotating log files to prevent excessive log file size. - The `to_datetime` and `to_timestamp`functions support a wide variety of input types and formats. They provide the time conversion that is e.g. used in PVForecast. Signed-off-by: Bobby Noelte <b0661n0e17e@gmail.com> * Improve testability of PVForecast Improvements for testing of PVForecast - Use common utility functions to allow for general testing at one spot. - to_datetime - CacheFileStore - Use logging instead of print to easily capture in testing. - Add validation of the json schema for Akkudoktor PV forecast data. - Allow to create an empty PVForecast instance as base instance for testing. - Make process_data() complete for filling a PVForecast instance for testing. - Normalize forecast datetime to timezone of system given in loaded data. - Do not print report but provide report for test checks. - Get rid of cache file path using the CachFileStore to automate cache file usage. - Improved module documentation. Signed-off-by: Bobby Noelte <b0661n0e17e@gmail.com> * Add test for PVForecast and newly extracted utility modules. - Add test for PVForecast - Add test for CacheFileStore in the new cachefilestore module - Add test for to_datetime, to_timestamp, to_timezone in the new datetimeutil module - Add test for get_logger in the new logutil module Signed-off-by: Bobby Noelte <b0661n0e17e@gmail.com> --------- Signed-off-by: Bobby Noelte <b0661n0e17e@gmail.com> Co-authored-by: Normann <github@koldrack.com>
365 lines
12 KiB
Python
365 lines
12 KiB
Python
"""Test Module for CacheFileStore Module."""
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import io
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import pickle
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from datetime import date, datetime, time, timedelta
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from time import sleep
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import pytest
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from akkudoktoreos.cachefilestore import CacheFileStore, cache_in_file
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from akkudoktoreos.datetimeutil import to_datetime
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# -----------------------------
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# CacheFileStore
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# -----------------------------
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@pytest.fixture
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def cache_store():
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"""A pytest fixture that creates a new CacheFileStore instance for testing."""
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return CacheFileStore()
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def test_generate_cache_file_key(cache_store):
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"""Test cache file key generation based on URL and date."""
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key = "http://example.com"
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until_dt = to_datetime("2024-10-01").date()
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cache_file_key, cache_file_until_dt = cache_store._generate_cache_file_key(key, until_dt)
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assert cache_file_key is not None
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assert cache_file_until_dt == until_dt
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# Provide no until date - assure today EOD is used.
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until_dt = datetime.combine(date.today(), time.max)
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cache_file_key, cache_file_until_dt = cache_store._generate_cache_file_key(key, None)
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assert cache_file_until_dt == until_dt
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cache_file_key1, cache_file_until_dt1 = cache_store._generate_cache_file_key(key, until_dt)
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assert cache_file_key == cache_file_key1
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assert cache_file_until_dt == until_dt
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def test_get_file_path(cache_store):
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"""Test get file path from cache file object."""
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cache_file = cache_store.create("test_file", mode="w+", suffix=".txt")
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file_path = cache_store._get_file_path(cache_file)
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assert file_path is not None
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def test_create_cache_file(cache_store):
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"""Test the creation of a cache file and ensure it is stored correctly."""
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# Create a cache file for today's date
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cache_file = cache_store.create("test_file", mode="w+", suffix=".txt")
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# Check that the file exists in the store and is a file-like object
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assert cache_file is not None
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assert hasattr(cache_file, "name")
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assert cache_file.name.endswith(".txt")
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# Write some data to the file
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cache_file.seek(0)
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cache_file.write("Test data")
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cache_file.seek(0) # Reset file pointer
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assert cache_file.read() == "Test data"
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def test_get_cache_file(cache_store):
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"""Test retrieving an existing cache file by key."""
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# Create a cache file and write data to it
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cache_file = cache_store.create("test_file", mode="w+")
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cache_file.seek(0)
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cache_file.write("Test data")
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cache_file.seek(0)
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# Retrieve the cache file and verify the data
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retrieved_file = cache_store.get("test_file")
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assert retrieved_file is not None
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retrieved_file.seek(0)
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assert retrieved_file.read() == "Test data"
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def test_set_custom_file_object(cache_store):
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"""Test setting a custom file-like object (BytesIO or StringIO) in the store."""
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# Create a BytesIO object and set it into the cache
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file_obj = io.BytesIO(b"Binary data")
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cache_store.set("binary_file", file_obj)
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# Retrieve the file from the store
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retrieved_file = cache_store.get("binary_file")
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assert isinstance(retrieved_file, io.BytesIO)
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retrieved_file.seek(0)
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assert retrieved_file.read() == b"Binary data"
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def test_delete_cache_file(cache_store):
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"""Test deleting a cache file from the store."""
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# Create multiple cache files
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cache_file1 = cache_store.create("file1")
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assert hasattr(cache_file1, "name")
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cache_file2 = cache_store.create("file2")
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assert hasattr(cache_file2, "name")
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# Ensure the files are in the store
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assert cache_store.get("file1") is cache_file1
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assert cache_store.get("file2") is cache_file2
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# Delete cache files
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cache_store.delete("file1")
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cache_store.delete("file2")
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# Ensure the store is empty
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assert cache_store.get("file1") is None
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assert cache_store.get("file2") is None
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def test_clear_all_cache_files(cache_store):
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"""Test clearing all cache files from the store."""
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# Create multiple cache files
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cache_file1 = cache_store.create("file1")
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assert hasattr(cache_file1, "name")
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cache_file2 = cache_store.create("file2")
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assert hasattr(cache_file2, "name")
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# Ensure the files are in the store
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assert cache_store.get("file1") is cache_file1
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assert cache_store.get("file2") is cache_file2
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# Clear all cache files
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cache_store.clear(clear_all=True)
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# Ensure the store is empty
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assert cache_store.get("file1") is None
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assert cache_store.get("file2") is None
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def test_clear_cache_files_by_date(cache_store):
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"""Test clearing cache files from the store by date."""
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# Create multiple cache files
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cache_file1 = cache_store.create("file1")
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assert hasattr(cache_file1, "name")
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cache_file2 = cache_store.create("file2")
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assert hasattr(cache_file2, "name")
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# Ensure the files are in the store
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assert cache_store.get("file1") is cache_file1
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assert cache_store.get("file2") is cache_file2
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# Clear cache files that are older than today
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cache_store.clear(before_datetime=datetime.combine(date.today(), time.min))
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# Ensure the files are in the store
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assert cache_store.get("file1") is cache_file1
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assert cache_store.get("file2") is cache_file2
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# Clear cache files that are older than tomorrow
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cache_store.clear(before_datetime=datetime.now() + timedelta(days=1))
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# Ensure the store is empty
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assert cache_store.get("file1") is None
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assert cache_store.get("file2") is None
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def test_cache_file_with_date(cache_store):
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"""Test creating and retrieving cache files with a specific date."""
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# Use a specific date for cache file creation
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specific_date = datetime(2023, 10, 10)
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cache_file = cache_store.create("dated_file", mode="w+", until_date=specific_date)
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# Write data to the cache file
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cache_file.write("Dated data")
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cache_file.seek(0)
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# Retrieve the cache file with the specific date
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retrieved_file = cache_store.get("dated_file", until_date=specific_date)
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assert retrieved_file is not None
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retrieved_file.seek(0)
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assert retrieved_file.read() == "Dated data"
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def test_recreate_existing_cache_file(cache_store):
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"""Test creating a cache file with an existing key does not overwrite the existing file."""
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# Create a cache file
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cache_file = cache_store.create("test_file", mode="w+")
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cache_file.write("Original data")
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cache_file.seek(0)
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# Attempt to recreate the same file (should return the existing one)
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new_file = cache_store.create("test_file")
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assert new_file is cache_file # Should be the same object
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new_file.seek(0)
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assert new_file.read() == "Original data" # Data should be preserved
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# Assure cache file store is a singleton
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cache_store2 = CacheFileStore()
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new_file = cache_store2.get("test_file")
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assert new_file is cache_file # Should be the same object
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def test_cache_store_is_singleton(cache_store):
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"""Test re-creating a cache store provides the same store."""
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# Create a cache file
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cache_file = cache_store.create("test_file", mode="w+")
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cache_file.write("Original data")
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cache_file.seek(0)
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# Assure cache file store is a singleton
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cache_store2 = CacheFileStore()
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new_file = cache_store2.get("test_file")
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assert new_file is cache_file # Should be the same object
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def test_cache_in_file_decorator_caches_function_result(cache_store):
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"""Test that the cache_in_file decorator caches a function result."""
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# Clear store to assure it is empty
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cache_store.clear(clear_all=True)
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assert len(cache_store._store) == 0
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# Define a simple function to decorate
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@cache_in_file(mode="w+")
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def my_function(until_date=None):
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return "Some expensive computation result"
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# Call the decorated function (should store result in cache)
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result = my_function(until_date=datetime.now() + timedelta(days=1))
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assert result == "Some expensive computation result"
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# Assert that the create method was called to store the result
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assert len(cache_store._store) == 1
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# Check if the result was written to the cache file
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key = next(iter(cache_store._store))
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cache_file = cache_store._store[key][0]
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assert cache_file is not None
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# Assert correct content was written to the file
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cache_file.seek(0) # Move to the start of the file
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assert cache_file.read() == "Some expensive computation result"
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def test_cache_in_file_decorator_uses_cache(cache_store):
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"""Test that the cache_in_file decorator reuses cached file on subsequent calls."""
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# Clear store to assure it is empty
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cache_store.clear(clear_all=True)
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assert len(cache_store._store) == 0
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# Define a simple function to decorate
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@cache_in_file(mode="w+")
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def my_function(until_date=None):
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return "New result"
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# Call the decorated function (should store result in cache)
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result = my_function(until_date=datetime.now() + timedelta(days=1))
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assert result == "New result"
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# Assert result was written to cache file
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key = next(iter(cache_store._store))
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cache_file = cache_store._store[key][0]
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assert cache_file is not None
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cache_file.seek(0) # Move to the start of the file
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assert cache_file.read() == result
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# Modify cache file
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result2 = "Cached result"
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cache_file.seek(0)
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cache_file.write(result2)
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# Call the decorated function again (should get result from cache)
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result = my_function(until_date=datetime.now() + timedelta(days=1))
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assert result == result2
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def test_cache_in_file_decorator_forces_update(cache_store):
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"""Test that the cache_in_file decorator reuses cached file on subsequent calls."""
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# Clear store to assure it is empty
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cache_store.clear(clear_all=True)
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assert len(cache_store._store) == 0
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# Define a simple function to decorate
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@cache_in_file(mode="w+")
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def my_function(until_date=None):
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return "New result"
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until_date = datetime.now() + timedelta(days=1)
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# Call the decorated function (should store result in cache)
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result1 = "New result"
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result = my_function(until_date=until_date)
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assert result == result1
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# Assert result was written to cache file
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key = next(iter(cache_store._store))
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cache_file = cache_store._store[key][0]
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assert cache_file is not None
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cache_file.seek(0) # Move to the start of the file
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assert cache_file.read() == result
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# Modify cache file
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result2 = "Cached result"
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cache_file.seek(0)
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cache_file.write(result2)
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# Call the decorated function again with force update (should get result from function)
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result = my_function(until_date=until_date, force_update=True)
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assert result == result1
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# Assure result was written to the same cache file
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cache_file.seek(0) # Move to the start of the file
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assert cache_file.read() == result1
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def test_cache_in_file_handles_ttl(cache_store):
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"""Test that the cache_infile decorator handles the with_ttl parameter."""
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# Clear store to assure it is empty
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cache_store.clear(clear_all=True)
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assert len(cache_store._store) == 0
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# Define a simple function to decorate
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@cache_in_file(mode="w+")
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def my_function():
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return "New result"
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# Call the decorated function
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result = my_function(with_ttl="1 second")
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# Overwrite cache file
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key = next(iter(cache_store._store))
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cache_file = cache_store._store[key][0]
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assert cache_file is not None
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cache_file.seek(0) # Move to the start of the file
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cache_file.write("Modified result")
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cache_file.seek(0) # Move to the start of the file
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assert cache_file.read() == "Modified result"
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result = my_function(with_ttl="1 second")
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assert result == "Modified result"
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# Wait one second to let the cache time out
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sleep(1)
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# Call again - cache should be timed out
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result = my_function(with_ttl="1 second")
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assert result == "New result"
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def test_cache_in_file_handles_bytes_return(cache_store):
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"""Test that the cache_infile decorator handles bytes returned from the function."""
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# Clear store to assure it is empty
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cache_store.clear(clear_all=True)
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assert len(cache_store._store) == 0
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# Define a function that returns bytes
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@cache_in_file()
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def my_function(until_date=None):
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return b"Some binary data"
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# Call the decorated function
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result = my_function(until_date=datetime.now() + timedelta(days=1))
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# Check if the binary data was written to the cache file
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key = next(iter(cache_store._store))
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cache_file = cache_store._store[key][0]
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assert cache_file is not None
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cache_file.seek(0)
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result1 = pickle.load(cache_file)
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assert result1 == result
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