Test the FindQuery class and how it turns expressions into Redis comm…

…ands (#642)

* added return_fields function, attempting to optionally limit fields returned by find

* added call to get query, adding tests

* cleaned up test file, added endswith test

* cleaned up one more return fields line, added fuzzy matching and cleaned up some tests

* remove changes - return_fields doesn't exist here, that'll be it's own branch

* removing whitespace from blank lines for linter

* fixing linter issues

* ignorning erroneous error

* making xfix tests more specific

* linting fixes

* removing validate return fields function as return_fields don't exist here

---------

Co-authored-by: slorello89 <steve.lorello@redis.com>

aredis_om/model/encoders.py

@@ -90,7 +90,7 @@ def jsonable_encoder(
             sqlalchemy_safe=sqlalchemy_safe,
         )
     if dataclasses.is_dataclass(obj):
-        return dataclasses.asdict(obj)
+        return dataclasses.asdict(obj)  # type: ignore[call-overload]
     if isinstance(obj, Enum):
         return obj.value
     if isinstance(obj, PurePath):

aredis_om/model/model.py

@@ -873,7 +873,9 @@ def resolve_redisearch_query(cls, expression: ExpressionOrNegated) -> str:
 
         return result
 
-    async def execute(self, exhaust_results=True, return_raw_result=False):
+    async def execute(
+        self, exhaust_results=True, return_raw_result=False, return_query_args=False
+    ):
         args: List[Union[str, bytes]] = [
             "FT.SEARCH",
             self.model.Meta.index_name,
@@ -898,6 +900,9 @@ async def execute(self, exhaust_results=True, return_raw_result=False):
         if self.nocontent:
             args.append("NOCONTENT")
 
+        if return_query_args:
+            return self.model.Meta.index_name, args
+
         # Reset the cache if we're executing from offset 0.
         if self.offset == 0:
             self._model_cache.clear()
@@ -931,6 +936,10 @@ async def execute(self, exhaust_results=True, return_raw_result=False):
             self._model_cache += _results
         return self._model_cache
 
+    async def get_query(self):
+        query = self.copy()
+        return await query.execute(return_query_args=True)
+
     async def first(self):
         query = self.copy(offset=0, limit=1, sort_fields=self.sort_fields)
         results = await query.execute(exhaust_results=False)