Fix Time Zone Problem when Read&Write DateTime to Json. (#133)

Author: shacharPash

src/Redis.OM/Modeling/DateTimeJsonConverter.cs

@@ -14,7 +14,7 @@ public override DateTime Read(ref Utf8JsonReader reader, Type typeToConvert, Jso
         {
             var val = reader.GetString();
             DateTime dateTime = new DateTime(1970, 1, 1, 0, 0, 0, 0, DateTimeKind.Utc);
-            return dateTime.AddMilliseconds(long.Parse(val!));
+            return TimeZoneInfo.ConvertTimeFromUtc(dateTime.AddMilliseconds(long.Parse(val!)), TimeZoneInfo.Local);
         }
 
         /// <inheritdoc />

test/Redis.OM.Unit.Tests/Serialization/DateTimeSerializationTest.cs

@@ -18,8 +18,8 @@ public DateTimeSerializationTest(RedisSetup setup)
         public void TestDateTimeSerialization()
         {
             var time = DateTime.Now;
-            var obj = new ObjectWithATimestamp {Name = "Foo", Time = time};
-            var objNonNullNullTime = new ObjectWithATimestamp {Name = "bar", Time = time, NullableTime = time}; 
+            var obj = new ObjectWithATimestamp { Name = "Foo", Time = time };
+            var objNonNullNullTime = new ObjectWithATimestamp { Name = "bar", Time = time, NullableTime = time };
             var id = _connection.Set(obj);
             var id2 = _connection.Set(objNonNullNullTime);
             var reconstituted = _connection.Get<ObjectWithATimestamp>(id);
@@ -28,20 +28,20 @@ public void TestDateTimeSerialization()
             Assert.Null(reconstituted.NullableTime);
             Assert.Equal(time.ToUniversalTime().ToString("yyyy-MM-ddTHH:mm:ss.fff"), reconstitutedObj2.NullableTime.Value.ToString("yyyy-MM-ddTHH:mm:ss.fff"));
         }
-        
+
         [Fact]
         public void TestJsonDateTimeSerialization()
         {
             var time = DateTime.Now;
-            var obj = new JsonObjectWithDateTime {Name = "Foo", Time = time};
-            var objNonNullNullTime = new JsonObjectWithDateTime {Name = "bar", Time = time, NullableTime = time}; 
+            var obj = new JsonObjectWithDateTime { Name = "Foo", Time = time };
+            var objNonNullNullTime = new JsonObjectWithDateTime { Name = "bar", Time = time, NullableTime = time };
             var id = _connection.Set(obj);
             var id2 = _connection.Set(objNonNullNullTime);
             var reconstituted = _connection.Get<JsonObjectWithDateTime>(id);
             var reconstitutedObj2 = _connection.Get<JsonObjectWithDateTime>(id2);
-            Assert.Equal(time.ToUniversalTime().ToString("yyyy-MM-ddTHH:mm:ss.fffZ"), reconstituted.Time.ToString("yyyy-MM-ddTHH:mm:ss.fffZ"));
+            Assert.Equal(time.ToString("yyyy-MM-ddTHH:mm:ss.fffZ"), reconstituted.Time.ToString("yyyy-MM-ddTHH:mm:ss.fffZ"));
             Assert.Null(reconstituted.NullableTime);
-            Assert.Equal(time.ToUniversalTime().ToString("yyyy-MM-ddTHH:mm:ss.fff"), reconstitutedObj2.NullableTime.Value.ToString("yyyy-MM-ddTHH:mm:ss.fff"));
+            Assert.Equal(time.ToString("yyyy-MM-ddTHH:mm:ss.fff"), reconstitutedObj2.NullableTime.Value.ToString("yyyy-MM-ddTHH:mm:ss.fff"));
         }
     }
 }