Update FakeQuery get results fileterered by table

fields to fix keyerror bug 1810314.

1. What is the problem?

right now Tricircle Unitests FakeQuery cannot get results
filtered by table fields get_value method in
/neutron/db/_model_query.py updated.

2. What is the solution to the problem?
update FakeQuery method add filtered fields function

Change-Id: Id51684ab840ad999b16fa417f7985e5c4a353367
Signed-off-by: zhangchi <zhangchi@szzt.com.cn>
Co-Authored-By: tangzhuo <ztang@hnu.edu.cn>

tricircle/tests/unit/utils.py

@@ -144,10 +144,11 @@ class DotList(list):
 class FakeQuery(object):
     pk_map = {'ports': 'id'}
 
-    def __init__(self, records, table):
+    def __init__(self, records, table, field=None):
         self.records = records
         self.table = table
         self.index = 0
+        self.field = field
 
     def _handle_pagination_by_id(self, record_id):
         for i, record in enumerate(self.records):
@@ -156,7 +157,7 @@ class FakeQuery(object):
                     return FakeQuery(self.records[i + 1:], self.table)
                 else:
                     return FakeQuery([], self.table)
-        return FakeQuery([], self.table)
+        return FakeQuery([], self.table, self.field)
 
     def _handle_filter(self, keys, values):
         filtered_list = []
@@ -168,7 +169,7 @@ class FakeQuery(object):
                     break
             if selected:
                 filtered_list.append(record)
-        return FakeQuery(filtered_list, self.table)
+        return FakeQuery(filtered_list, self.table, self.field)
 
     def filter(self, *criteria):
         _filter = []
@@ -194,7 +195,7 @@ class FakeQuery(object):
                     values.append(True)
         if not _filter:
             if not keys:
-                return FakeQuery(self.records, self.table)
+                return FakeQuery(self.records, self.table, self.field)
             else:
                 return self._handle_filter(keys, values)
         if hasattr(_filter[0].right, 'value'):
@@ -219,7 +220,7 @@ class FakeQuery(object):
                     break
             if selected:
                 filtered_list.append(record)
-        return FakeQuery(filtered_list, self.table)
+        return FakeQuery(filtered_list, self.table, self.field)
 
     def get(self, pk):
         pk_field = self.pk_map[self.table]
@@ -231,26 +232,33 @@ class FakeQuery(object):
         pass
 
     def outerjoin(self, *props, **kwargs):
-        return FakeQuery(self.records, self.table)
+        return FakeQuery(self.records, self.table, self.field)
 
     def join(self, *props, **kwargs):
-        return FakeQuery(self.records, self.table)
+        return FakeQuery(self.records, self.table, self.field)
 
     def order_by(self, func):
         self.records.sort(key=lambda x: x['id'])
-        return FakeQuery(self.records, self.table)
+        return FakeQuery(self.records, self.table, self.field)
 
     def enable_eagerloads(self, value):
-        return FakeQuery(self.records, self.table)
+        return FakeQuery(self.records, self.table, self.field)
 
     def limit(self, limit):
-        return FakeQuery(self.records[:limit], self.table)
+        return FakeQuery(self.records[:limit], self.table, self.field)
 
     def next(self):
         if self.index >= len(self.records):
             raise StopIteration
         self.index += 1
-        return self.records[self.index - 1]
+        record = self.records[self.index - 1]
+        # populate integer indices
+        i = 0
+        for key, value in list(record.items()):
+            if key == self.field:
+                record[i] = value
+                i += 1
+        return record
 
     __next__ = next
 
@@ -359,12 +367,14 @@ class FakeSession(object):
         return FakeSession.WithWrapper()
 
     def query(self, model):
+        field = None
         if isinstance(model, attributes.InstrumentedAttribute):
+            field = model.key
             model = model.class_
         if model.__tablename__ not in self.resource_store.store_map:
-            return FakeQuery([], model.__tablename__)
+            return FakeQuery([], model.__tablename__, field)
         return FakeQuery(self.resource_store.store_map[model.__tablename__],
-                         model.__tablename__)
+                         model.__tablename__, field)
 
     def _extend_standard_attr(self, model_dict):
         if 'standard_attr' in model_dict: