From a321e3622e7c48a4e7a793280e47289d84481823 Mon Sep 17 00:00:00 2001
From: Kishore Nallan <kishorenc@gmail.com>
Date: Fri, 28 Apr 2023 16:04:22 +0530
Subject: [PATCH] Add test for a bug which returned null values for nested
 fields.

---
 test/collection_nested_fields_test.cpp | 27 ++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/test/collection_nested_fields_test.cpp b/test/collection_nested_fields_test.cpp
index 9693e08d..e50cf0e2 100644
--- a/test/collection_nested_fields_test.cpp
+++ b/test/collection_nested_fields_test.cpp
@@ -2406,6 +2406,33 @@ TEST_F(CollectionNestedFieldsTest, FieldsWithDotsButNotNested) {
               results["hits"][0]["highlight"]["name.first"]["snippet"].get<std::string>());
 }
 
+TEST_F(CollectionNestedFieldsTest, NullValuesWithExplicitSchema) {
+    nlohmann::json schema = R"({
+        "name": "coll1",
+        "enable_nested_fields": true,
+        "fields": [
+          {"name": "name", "type": "object"},
+          {"name": "name.first", "type": "string"},
+          {"name": "name.last", "type": "string", "optional": true}
+        ]
+    })"_json;
+
+    auto op = collectionManager.create_collection(schema);
+    ASSERT_TRUE(op.ok());
+    Collection* coll1 = op.get();
+
+    auto doc1 = R"({
+        "name": {"last": null, "first": "Jack"}
+    })"_json;
+
+    auto add_op = coll1->add(doc1.dump(), CREATE);
+    ASSERT_TRUE(add_op.ok());
+
+    auto results = coll1->search("jack", {"name.first"}, "", {}, {}, {0}, 10, 1, FREQUENCY, {false}).get();
+    ASSERT_EQ(1, results["found"].get<size_t>());
+    ASSERT_EQ(2, results["hits"][0]["document"].size());  // id, name
+}
+
 TEST_F(CollectionNestedFieldsTest, UpdateNestedDocument) {
     nlohmann::json schema = R"({
         "name": "coll1",