fix: fix deprecation warning on fonticon plugin discovery on python 3.10 (#95)

* fix: fix fonticon

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

* fix entry points API

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

tests/test_fonticon/fixtures/fake_plugin.dist-info/METADATA

@@ -0,0 +1,3 @@
+Metadata-Version: 2.1
+Name: fake-plugin
+Version: 5.15.4

tests/test_fonticon/fixtures/fake_plugin.dist-info/entry_points.txt

@@ -0,0 +1,2 @@
+[superqt.fonticon]
+ico = fake_plugin:ICO

tests/test_fonticon/fixtures/fake_plugin.dist-info/top_level.txt

@@ -0,0 +1 @@
+fake_plugin

tests/test_fonticon/fixtures/fake_plugin/__init__.py

@@ -0,0 +1,6 @@
+from pathlib import Path
+
+
+class ICO:
+    __font_file__ = str(Path(__file__).parent / "icontest.ttf")
+    smiley = "ico.\ue900"

tests/test_fonticon/test_fonticon.py

@@ -11,7 +11,7 @@ TEST_PREFIX = "ico"
 TEST_CHARNAME = "smiley"
 TEST_CHAR = "\ue900"
 TEST_GLYPHKEY = f"{TEST_PREFIX}.{TEST_CHARNAME}"
-FONT_FILE = Path(__file__).parent / "icontest.ttf"
+FONT_FILE = Path(__file__).parent / "fixtures" / "fake_plugin" / "icontest.ttf"
 
 
 @pytest.fixture

tests/test_fonticon/test_plugins.py

@@ -7,41 +7,15 @@ from qtpy.QtGui import QIcon, QPixmap
 from superqt.fonticon import _plugins, icon
 from superqt.fonticon._qfont_icon import QFontIconStore
 
-try:
-    from importlib.metadata import Distribution
-except ImportError:
-    from importlib_metadata import Distribution  # type: ignore
-
-
-class ICO:
-    __font_file__ = str(Path(__file__).parent / "icontest.ttf")
-    smiley = "ico.\ue900"
+FIXTURES = Path(__file__).parent / "fixtures"
 
 
 @pytest.fixture
 def plugin_store(qapp, monkeypatch):
-    class MockEntryPoint:
-        name = "ico"
-        group = _plugins.FontIconManager.ENTRY_POINT
-        value = "fake_plugin.ICO"
-
-        def load(self):
-            return ICO
-
-    class MockFinder:
-        def find_distributions(self, *a):
-            class D(Distribution):
-                name = "mock"
-
-                @property
-                def entry_points(self):
-                    return [MockEntryPoint()]
-
-            return [D()]
-
+    _path = [str(FIXTURES)] + sys.path.copy()
     store = QFontIconStore().instance()
     with monkeypatch.context() as m:
-        m.setattr(sys, "meta_path", [MockFinder()])
+        m.setattr(sys, "path", _path)
         yield store
     store.clear()