tests: move more tests into core, more consistent tests running in tox

my/core/tests/test_cachew.py

@@ -0,0 +1,53 @@
+from .common import skip_if_uses_optional_deps as pytestmark
+
+from typing import List
+
+# TODO ugh, this is very messy.. need to sort out config overriding here
+
+
+def test_cachew() -> None:
+    from cachew import settings
+
+    settings.ENABLE = True  # by default it's off in tests (see conftest.py)
+
+    from my.core.common import mcachew
+
+    called = 0
+
+    # TODO ugh. need doublewrap or something to avoid having to pass parens
+    @mcachew()
+    def cf() -> List[int]:
+        nonlocal called
+        called += 1
+        return [1, 2, 3]
+
+    list(cf())
+    cc = called
+    # todo ugh. how to clean cache?
+    # assert called == 1 # precondition, to avoid turdes from previous tests
+
+    assert list(cf()) == [1, 2, 3]
+    assert called == cc
+
+
+def test_cachew_dir_none() -> None:
+    from cachew import settings
+
+    settings.ENABLE = True  # by default it's off in tests (see conftest.py)
+
+    from my.core.cachew import cache_dir
+    from my.core.common import mcachew
+    from my.core.core_config import _reset_config as reset
+
+    with reset() as cc:
+        cc.cache_dir = None
+        called = 0
+
+        @mcachew(cache_path=cache_dir() / 'ctest')
+        def cf() -> List[int]:
+            nonlocal called
+            called += 1
+            return [called, called, called]
+
+        assert list(cf()) == [1, 1, 1]
+        assert list(cf()) == [2, 2, 2]