# Copyright 2023 (c) Anna Schumaker.
"""Tests our Gdk.Texture cache."""
import emmental.texture
import pathlib
import tests.util
import unittest
from gi.repository import Gdk


class TestTextureCache(unittest.TestCase):
    """Test our custom cache dictionary."""

    def setUp(self):
        """Set up common variables."""
        self.cache = emmental.texture._TextureCache()

    def test_init(self):
        """Test that the cache dict is initialized properly."""
        self.assertIsInstance(emmental.texture.CACHE,
                              emmental.texture._TextureCache)
        self.assertDictEqual(emmental.texture.CACHE, {})

        self.assertIsInstance(self.cache, dict)
        self.assertDictEqual(self.cache, {})

    def test_drop(self):
        """Test dropping items from the cache."""
        self.cache[tests.util.COVER_JPG]
        self.cache.drop(tests.util.COVER_JPG)
        self.assertDictEqual(self.cache, {})

    def test_getitem(self):
        """Test getting and creating items in the cache dict."""
        self.assertIsNone(self.cache[None])
        self.assertIsNone(self.cache[pathlib.Path("/no/such/path")])
        self.assertDictEqual(self.cache, {})

        texture = self.cache[tests.util.COVER_JPG]
        self.assertIsInstance(texture, Gdk.Texture)
        self.assertDictEqual(self.cache, {tests.util.COVER_JPG: texture})
        self.assertEqual(self.cache[tests.util.COVER_JPG], texture)