fix networks issue

Author: blaylockbk

src/synoptic/services.py

@@ -704,7 +704,7 @@ def df(self) -> pl.DataFrame:
             pl.concat([pl.DataFrame(i) for i in self.MNET], how="diagonal_relaxed")
             .with_columns(
                 pl.col("ID", "CATEGORY").cast(pl.UInt32),
-                pl.col("LAST_OBSERVATION").str.to_datetime(),
+                pl.col("LAST_OBSERVATION").str.to_datetime(time_zone="UTC"),
                 pl.struct(
                     pl.col("PERIOD_OF_RECORD")
                     .struct.field("start")

tests/test_metadata_tables.py

@@ -18,22 +18,27 @@ def test_Variables():
     assert len(s.df())
 
 
-def test_Networks():
-    """Get DataFrame of all networks."""
-    s = ss.Networks()
+def test_NetworkTypes():
+    """Get DataFrame of all network types."""
+    s = ss.NetworkTypes()
     assert len(s.df())
 
-    s = ss.Networks(id=1)
-    assert len(s.df()) == 1
 
-    s = ss.Networks(id=[1, 2, 3])
-    assert len(s.df()) == 3
+class TestNetworks:
+    """Get DataFrame of all networks."""
+
+    def test_networks_default(self):
+        s = ss.Networks()
+        assert len(s.df())
 
-    s = ss.Networks(shortname="uunet,raws")
-    assert len(s.df()) == 2
+    def test_networks_1(self):
+        s = ss.Networks(id=1)
+        assert len(s.df()) == 1
 
+    def test_networks_123(self):
+        s = ss.Networks(id=[1, 2, 3])
+        assert len(s.df()) == 3
 
-def test_NetworkTypes():
-    """Get DataFrame of all network types."""
-    s = ss.NetworkTypes()
-    assert len(s.df())
+    def test_networks_shortname(self):
+        s = ss.Networks(shortname="uunet,raws")
+        assert len(s.df()) == 2