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diff --git a/Firestore/core/test/firebase/firestore/core/query_test.cc b/Firestore/core/test/firebase/firestore/core/query_test.cc
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+++ b/Firestore/core/test/firebase/firestore/core/query_test.cc
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+/*
+ * Copyright 2018 Google
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "Firestore/core/src/firebase/firestore/core/query.h"
+
+#include "Firestore/core/src/firebase/firestore/model/document.h"
+#include "Firestore/core/src/firebase/firestore/model/resource_path.h"
+#include "Firestore/core/test/firebase/firestore/testutil/testutil.h"
+#include "gtest/gtest.h"
+
+namespace firebase {
+namespace firestore {
+namespace core {
+
+using model::Document;
+using testutil::Doc;
+
+TEST(QueryTest, MatchesBasedOnDocumentKey) {
+  Document doc1 = Doc("rooms/eros/messages/1");
+  Document doc2 = Doc("rooms/eros/messages/2");
+  Document doc3 = Doc("rooms/other/messages/1");
+
+  Query query = Query::AtPath({"rooms", "eros", "messages", "1"});
+  EXPECT_TRUE(query.Matches(doc1));
+  EXPECT_FALSE(query.Matches(doc2));
+  EXPECT_FALSE(query.Matches(doc3));
+}
+
+TEST(QueryTest, MatchesShallowAncestorQuery) {
+  Document doc1 = Doc("rooms/eros/messages/1");
+  Document doc1_meta = Doc("rooms/eros/messages/1/meta/1");
+  Document doc2 = Doc("rooms/eros/messages/2");
+  Document doc3 = Doc("rooms/other/messages/1");
+
+  Query query = Query::AtPath({"rooms", "eros", "messages"});
+  EXPECT_TRUE(query.Matches(doc1));
+  EXPECT_FALSE(query.Matches(doc1_meta));
+  EXPECT_TRUE(query.Matches(doc2));
+  EXPECT_FALSE(query.Matches(doc3));
+}
+
+}  // namespace core
+}  // namespace firestore
+}  // namespace firebase