init: zero-dep dns-over-https resolver

tests/test_cache.py

@@ -0,0 +1,29 @@
+import time
+
+from pydoh.cache import TTLCache
+
+
+def test_cache_hit():
+    cache = TTLCache()
+    cache.set("k", ["1.2.3.4"], ttl=60)
+    assert cache.get("k") == ["1.2.3.4"]
+
+
+def test_cache_expires():
+    cache = TTLCache()
+    cache.set("k", ["1.2.3.4"], ttl=0.05)
+    assert cache.get("k") == ["1.2.3.4"]
+    time.sleep(0.1)
+    assert cache.get("k") is None
+
+
+def test_cache_clear():
+    cache = TTLCache()
+    cache.set("k", ["1.2.3.4"], ttl=60)
+    cache.clear()
+    assert cache.get("k") is None
+
+
+def test_cache_miss():
+    cache = TTLCache()
+    assert cache.get("missing") is None