Add Support for bool type fields serialization and deserialization

src/databricks/labs/blueprint/installation.py

@@ -632,7 +632,8 @@ def _marshal_dataclass(self, type_ref: type, path: list[str], inst: Any) -> tupl
             value, ok = self._marshal(hint, [*path, field], raw)
             if not ok:
                 raise SerdeError(self._explain_why(hint, [*path, field], raw))
-            if not value:
+            # Earlier for boolean fields when the value was False, we would skip it. Which was incorrect
+            if not value and hint is not bool:
                 continue
             as_dict[field] = value
         return as_dict, True
@@ -936,7 +937,7 @@ def _dump_csv(raw: list[JsonObject], type_ref: type) -> bytes:
             if not isinstance(as_dict, dict):
                 raise SerdeError(f"Expecting a list of dictionaries. Got {as_dict}")
             for k, v in as_dict.items():
-                if not v:
+                if not v and v is not False:
                     continue
                 non_empty_keys.add(k)
         buffer = io.StringIO()

tests/unit/test_installation.py

@@ -761,3 +761,25 @@ class ForwardReferencingClass:
 
     loaded = installation.load(ForwardReferencingClass, filename="saved.yml")
     assert instance == loaded
+
+
+def test_bool_attribute() -> None:
+    @dataclass(kw_only=True)
+    class BooleanAttributeClass:
+        __file__ = "config.yml"
+        __version__ = 3
+        skip_validation: bool
+        sdk_config: JsonValue
+
+    instance_false = BooleanAttributeClass(skip_validation=False, sdk_config={"warehouse_id": "8xc123456"})
+    installation = MockInstallation()
+    installation.save(instance_false)
+
+    loaded_false = installation.load(BooleanAttributeClass)
+    assert instance_false == loaded_false
+
+    instance_true = BooleanAttributeClass(skip_validation=True, sdk_config={"warehouse_id": "9xc1234567"})
+    installation.save(instance_true)
+
+    loaded_true = installation.load(BooleanAttributeClass)
+    assert instance_true == loaded_true