File: test_mtime_cache.py

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import io

from django.core.management import call_command
from django.core.management.base import CommandError
from django.test import TestCase


class TestMtimeCacheCommand(TestCase):
    # FIXME: add actual tests, improve the existing ones.

    exclusion_patterns = [
        "*CACHE*",
        "*custom*",
        "*066cd253eada.js",
        "*d728fc7f9301.js",
        "*8a0fed36c317.js",
        "test.txt*",
    ]

    def default_ignore(self):
        return ["--ignore=%s" % pattern for pattern in self.exclusion_patterns]

    def test_handle_no_args(self):
        with self.assertRaises(CommandError):
            call_command("mtime_cache")

    def test_handle_add(self):
        out = io.StringIO()
        with self.settings(CACHES={}):
            call_command("mtime_cache", "--add", *self.default_ignore(), stdout=out)
        output = out.getvalue()
        self.assertIn("Deleted mtimes of 20 files from the cache.", output)
        self.assertIn("Added mtimes of 20 files to cache.", output)

    def test_handle_clean(self):
        out = io.StringIO()
        with self.settings(CACHES={}):
            call_command("mtime_cache", "--clean", *self.default_ignore(), stdout=out)
        output = out.getvalue()
        self.assertIn("Deleted mtimes of 20 files from the cache.", output)
        self.assertNotIn("Added mtimes of 20 files to cache.", output)