Add regression for nullable searchable contains query

[slorello89]

Issue #536\n\nSummary: add regression coverage for a nullable searchable-field query with a projection and explicit null guard. The current code path serializes to a valid Redis query for the guarded form, so this change locks that behavior in as a regression test.\n\nRoot cause: the issue report shows a malformed query shape around and . On current HEAD, the explicit path serializes correctly; I could not reproduce the live Redis syntax failure for that guarded form.\n\nFix: add a focused unit regression in covering with a projection.\n\nTests: Determining projects to restore...
All projects are up-to-date for restore.
Redis.OM -> /private/tmp/redis-om-dotnet-issue-536/src/Redis.OM/bin/Debug/netstandard2.0/Redis.OM.dll
Successfully created package '/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM/bin/Debug/Redis.OM.1.1.0.nupkg'.
/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/RedisConnectionExtensions.cs(10,24): warning CS0436: The type 'RedisConnection' in '/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/RedisConnection.cs' conflicts with the imported type 'RedisConnection' in 'Redis.OM, Version=1.1.0.0, Culture=neutral, PublicKeyToken=null'. Using the type defined in '/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/RedisConnection.cs'. [/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/Redis.OM.POC.csproj]
/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/PendingConsumer.cs(25,28): warning CS8601: Possible null reference assignment. [/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/Redis.OM.POC.csproj]
/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/PendingConsumer.cs(23,18): warning CS8618: Non-nullable property 'ConsumerName' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable. [/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/Redis.OM.POC.csproj]
/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/RedisConnection.cs(24,16): warning CS8618: Non-nullable field '_db' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the field as nullable. [/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/Redis.OM.POC.csproj]
/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/XRangeResponse.cs(84,30): warning CS8604: Possible null reference argument for parameter 'key' in 'void IDictionary<string, IDictionary<string, string>>.Add(string key, IDictionary<string, string> value)'. [/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/Redis.OM.POC.csproj]
/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/XRangeResponse.cs(112,26): warning CS8600: Converting null literal or possible null value to non-nullable type. [/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/Redis.OM.POC.csproj]
/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/XRangeResponse.cs(113,30): warning CS8600: Converting null literal or possible null value to non-nullable type. [/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/Redis.OM.POC.csproj]
/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/XRangeResponse.cs(115,37): warning CS8602: Dereference of a possibly null reference. [/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/Redis.OM.POC.csproj]
/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/XRangeResponse.cs(119,30): warning CS8604: Possible null reference argument for parameter 'key' in 'void IDictionary<string, IDictionary<string, string>>.Add(string key, IDictionary<string, string> value)'. [/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/Redis.OM.POC.csproj]
/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/XRangeResponse.cs(22,24): warning CS8600: Converting null literal or possible null value to non-nullable type. [/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/Redis.OM.POC.csproj]
/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/XRangeResponse.cs(23,38): warning CS8600: Converting null literal or possible null value to non-nullable type. [/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/Redis.OM.POC.csproj]
/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/XRangeResponse.cs(23,38): warning CS8602: Dereference of a possibly null reference. [/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/Redis.OM.POC.csproj]
/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/XRangeResponse.cs(25,30): warning CS8602: Dereference of a possibly null reference. [/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/Redis.OM.POC.csproj]
/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/XRangeResponse.cs(25,22): warning CS8600: Converting null literal or possible null value to non-nullable type. [/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/Redis.OM.POC.csproj]
/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/XRangeResponse.cs(32,39): warning CS8602: Dereference of a possibly null reference. [/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/Redis.OM.POC.csproj]
/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/XRangeResponse.cs(32,24): warning CS8600: Converting null literal or possible null value to non-nullable type. [/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/Redis.OM.POC.csproj]
/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/XRangeResponse.cs(33,33): warning CS8602: Dereference of a possibly null reference. [/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/Redis.OM.POC.csproj]
/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/XRangeResponse.cs(35,35): warning CS8600: Converting null literal or possible null value to non-nullable type. [/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/Redis.OM.POC.csproj]
/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/XRangeResponse.cs(35,35): warning CS8602: Dereference of a possibly null reference. [/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/Redis.OM.POC.csproj]
/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/XRangeResponse.cs(35,26): warning CS8600: Converting null literal or possible null value to non-nullable type. [/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/Redis.OM.POC.csproj]
/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/XRangeResponse.cs(36,46): warning CS8600: Converting null literal or possible null value to non-nullable type. [/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/Redis.OM.POC.csproj]
/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/XRangeResponse.cs(36,46): warning CS8602: Dereference of a possibly null reference. [/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/Redis.OM.POC.csproj]
/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/XRangeResponse.cs(36,30): warning CS8600: Converting null literal or possible null value to non-nullable type. [/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/Redis.OM.POC.csproj]
/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/XRangeResponse.cs(38,37): warning CS8602: Dereference of a possibly null reference. [/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/Redis.OM.POC.csproj]
/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/XRangeResponse.cs(40,38): warning CS8600: Converting null literal or possible null value to non-nullable type. [/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/Redis.OM.POC.csproj]
/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/XRangeResponse.cs(40,38): warning CS8604: Possible null reference argument for parameter 'key' in 'void Dictionary<string, RedisReply>.Add(string key, RedisReply value)'. [/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/Redis.OM.POC.csproj]
/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/XRangeResponse.cs(42,30): warning CS8604: Possible null reference argument for parameter 'key' in 'void IDictionary<string, T>.Add(string key, T value)'. [/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/Redis.OM.POC.csproj]
/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/RespHelper.cs(92,24): warning CS8603: Possible null reference return. [/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/Redis.OM.POC.csproj]
/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/RespHelper.cs(103,24): warning CS8603: Possible null reference return. [/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/Redis.OM.POC.csproj]
/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/XPendingReply.cs(33,32): warning CS8601: Possible null reference assignment. [/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/Redis.OM.POC.csproj]
/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/XPendingReply.cs(34,33): warning CS8601: Possible null reference assignment. [/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/Redis.OM.POC.csproj]
/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/XPendingReply.cs(31,18): warning CS8618: Non-nullable property 'SmallestPendingId' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable. [/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/Redis.OM.POC.csproj]
/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/XPendingReply.cs(31,18): warning CS8618: Non-nullable property 'LargestPendingId' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable. [/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/Redis.OM.POC.csproj]
/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/StreamGroupInfo.cs(28,31): warning CS8601: Possible null reference assignment. [/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/Redis.OM.POC.csproj]
/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/StreamGroupInfo.cs(23,18): warning CS8618: Non-nullable property 'LastDeliveredId' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable. [/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/Redis.OM.POC.csproj]
/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/XPendingMessage.cs(27,25): warning CS8601: Possible null reference assignment. [/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/Redis.OM.POC.csproj]
/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/XPendingMessage.cs(28,28): warning CS8601: Possible null reference assignment. [/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/Redis.OM.POC.csproj]
/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/XPendingMessage.cs(25,16): warning CS8618: Non-nullable property 'MessageId' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable. [/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/Redis.OM.POC.csproj]
/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/XPendingMessage.cs(25,16): warning CS8618: Non-nullable property 'ConsumerName' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable. [/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/Redis.OM.POC.csproj]
/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/XAutoClaimResponse.cs(24,23): warning CS8600: Converting null literal or possible null value to non-nullable type. [/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/Redis.OM.POC.csproj]
/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/XAutoClaimResponse.cs(24,23): warning CS8601: Possible null reference assignment. [/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/Redis.OM.POC.csproj]
/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/XAutoClaimResponse.cs(22,16): warning CS8618: Non-nullable property 'NextId' must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring the property as nullable. [/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/Redis.OM.POC.csproj]
/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/StreamInfoFull.cs(24,17): warning CS8604: Possible null reference argument for parameter 'key' in 'KeyValuePair<string, IDictionary<string, string>>.KeyValuePair(string key, IDictionary<string, string> value)'. [/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/Redis.OM.POC.csproj]
/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/StreamInfoFull.cs(27,17): warning CS8604: Possible null reference argument for parameter 'key' in 'KeyValuePair<string, IDictionary<string, string>>.KeyValuePair(string key, IDictionary<string, string> value)'. [/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/Redis.OM.POC.csproj]
/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/RedisConnection.cs(21,36): warning CS0649: Field 'RedisConnection._db' is never assigned to, and will always have its default value null [/private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/Redis.OM.POC.csproj]
Redis.OM.POC -> /private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.POC/bin/Debug/netstandard2.0/Redis.OM.POC.dll
Redis.OM.Vectorizers -> /private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.Vectorizers/bin/Debug/net7.0/Redis.OM.Vectorizers.dll
Redis.OM.Vectorizers -> /private/tmp/redis-om-dotnet-issue-536/src/Redis.OM.Vectorizers/bin/Debug/net6.0/Redis.OM.Vectorizers.dll
/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/Serialization/ObjectWithZeroStopwords.cs(11,22): warning CS8632: The annotation for nullable reference types should only be used in code within a '#nullable' annotations context. [/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/Redis.OM.Unit.Tests.csproj::TargetFramework=net6.0]
/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/RediSearchTests/ObjectWithNullableStrings.cs(40,18): warning CS8632: The annotation for nullable reference types should only be used in code within a '#nullable' annotations context. [/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/Redis.OM.Unit.Tests.csproj::TargetFramework=net6.0]
/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/RediSearchTests/ObjectWithNullableStrings.cs(43,18): warning CS8632: The annotation for nullable reference types should only be used in code within a '#nullable' annotations context. [/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/Redis.OM.Unit.Tests.csproj::TargetFramework=net6.0]
/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/RediSearchTests/ObjectWithNullableStrings.cs(16,18): warning CS8632: The annotation for nullable reference types should only be used in code within a '#nullable' annotations context. [/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/Redis.OM.Unit.Tests.csproj::TargetFramework=net6.0]
/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/RediSearchTests/ObjectWithNullableStrings.cs(19,18): warning CS8632: The annotation for nullable reference types should only be used in code within a '#nullable' annotations context. [/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/Redis.OM.Unit.Tests.csproj::TargetFramework=net6.0]
/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/RediSearchTests/Person.cs(78,22): warning CS8632: The annotation for nullable reference types should only be used in code within a '#nullable' annotations context. [/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/Redis.OM.Unit.Tests.csproj::TargetFramework=net6.0]
/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/RediSearchTests/AggregationFunctionalTests.cs(214,63): warning CS4014: Because this call is not awaited, execution of the current method continues before the call is completed. Consider applying the 'await' operator to the result of the call. [/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/Redis.OM.Unit.Tests.csproj::TargetFramework=net6.0]
/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/RediSearchTests/ReducerTests.cs(804,63): warning CS4014: Because this call is not awaited, execution of the current method continues before the call is completed. Consider applying the 'await' operator to the result of the call. [/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/Redis.OM.Unit.Tests.csproj::TargetFramework=net6.0]
/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/ConnectionTests.cs(10,24): warning CS0414: The field 'ConnectionTests.SENTINEL_CONNECTION_STRING' is assigned but its value is never used [/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/Redis.OM.Unit.Tests.csproj::TargetFramework=net6.0]
/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/ConnectionTests.cs(9,24): warning CS0414: The field 'ConnectionTests.STANDALONE_CONNECTION_STRING' is assigned but its value is never used [/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/Redis.OM.Unit.Tests.csproj::TargetFramework=net6.0]
/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/RediSearchTests/SearchFunctionalTests.cs(1185,21): warning xUnit1013: Public method 'CompareTimestamps' on test class 'SearchFunctionalTests' should be marked as a Theory. (https://xunit.github.io/xunit.analyzers/rules/xUnit1013) [/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/Redis.OM.Unit.Tests.csproj::TargetFramework=net6.0]
/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/ConfigurationTests.cs(109,13): warning xUnit2012: Do not use Enumerable.Any() to check if a value exists in a collection. (https://xunit.github.io/xunit.analyzers/rules/xUnit2012) [/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/Redis.OM.Unit.Tests.csproj::TargetFramework=net6.0]
/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/ConfigurationTests.cs(110,13): warning xUnit2012: Do not use Enumerable.Any() to check if a value exists in a collection. (https://xunit.github.io/xunit.analyzers/rules/xUnit2012) [/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/Redis.OM.Unit.Tests.csproj::TargetFramework=net6.0]
Redis.OM.Unit.Tests -> /private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/bin/Debug/net6.0/Redis.OM.Unit.Tests.dll
/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/Serialization/ObjectWithZeroStopwords.cs(11,22): warning CS8632: The annotation for nullable reference types should only be used in code within a '#nullable' annotations context. [/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/Redis.OM.Unit.Tests.csproj::TargetFramework=net7.0]
/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/RediSearchTests/ObjectWithNullableStrings.cs(40,18): warning CS8632: The annotation for nullable reference types should only be used in code within a '#nullable' annotations context. [/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/Redis.OM.Unit.Tests.csproj::TargetFramework=net7.0]
/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/RediSearchTests/ObjectWithNullableStrings.cs(43,18): warning CS8632: The annotation for nullable reference types should only be used in code within a '#nullable' annotations context. [/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/Redis.OM.Unit.Tests.csproj::TargetFramework=net7.0]
/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/RediSearchTests/ObjectWithNullableStrings.cs(16,18): warning CS8632: The annotation for nullable reference types should only be used in code within a '#nullable' annotations context. [/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/Redis.OM.Unit.Tests.csproj::TargetFramework=net7.0]
/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/RediSearchTests/ObjectWithNullableStrings.cs(19,18): warning CS8632: The annotation for nullable reference types should only be used in code within a '#nullable' annotations context. [/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/Redis.OM.Unit.Tests.csproj::TargetFramework=net7.0]
/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/RediSearchTests/Person.cs(78,22): warning CS8632: The annotation for nullable reference types should only be used in code within a '#nullable' annotations context. [/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/Redis.OM.Unit.Tests.csproj::TargetFramework=net7.0]
/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/RediSearchTests/AggregationFunctionalTests.cs(214,63): warning CS4014: Because this call is not awaited, execution of the current method continues before the call is completed. Consider applying the 'await' operator to the result of the call. [/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/Redis.OM.Unit.Tests.csproj::TargetFramework=net7.0]
/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/RediSearchTests/ReducerTests.cs(804,63): warning CS4014: Because this call is not awaited, execution of the current method continues before the call is completed. Consider applying the 'await' operator to the result of the call. [/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/Redis.OM.Unit.Tests.csproj::TargetFramework=net7.0]
/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/ConnectionTests.cs(10,24): warning CS0414: The field 'ConnectionTests.SENTINEL_CONNECTION_STRING' is assigned but its value is never used [/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/Redis.OM.Unit.Tests.csproj::TargetFramework=net7.0]
/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/ConnectionTests.cs(9,24): warning CS0414: The field 'ConnectionTests.STANDALONE_CONNECTION_STRING' is assigned but its value is never used [/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/Redis.OM.Unit.Tests.csproj::TargetFramework=net7.0]
/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/RediSearchTests/SearchFunctionalTests.cs(1185,21): warning xUnit1013: Public method 'CompareTimestamps' on test class 'SearchFunctionalTests' should be marked as a Theory. (https://xunit.github.io/xunit.analyzers/rules/xUnit1013) [/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/Redis.OM.Unit.Tests.csproj::TargetFramework=net7.0]
/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/ConfigurationTests.cs(109,13): warning xUnit2012: Do not use Enumerable.Any() to check if a value exists in a collection. (https://xunit.github.io/xunit.analyzers/rules/xUnit2012) [/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/Redis.OM.Unit.Tests.csproj::TargetFramework=net7.0]
/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/ConfigurationTests.cs(110,13): warning xUnit2012: Do not use Enumerable.Any() to check if a value exists in a collection. (https://xunit.github.io/xunit.analyzers/rules/xUnit2012) [/private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/Redis.OM.Unit.Tests.csproj::TargetFramework=net7.0]
Redis.OM.Unit.Tests -> /private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/bin/Debug/net7.0/Redis.OM.Unit.Tests.dll
Test run for /private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/bin/Debug/net7.0/Redis.OM.Unit.Tests.dll (.NETCoreApp,Version=v7.0)
Test run for /private/tmp/redis-om-dotnet-issue-536/test/Redis.OM.Unit.Tests/bin/Debug/net6.0/Redis.OM.Unit.Tests.dll (.NETCoreApp,Version=v6.0)
VSTest version 17.13.0 (arm64)
VSTest version 17.13.0 (arm64)

Starting test execution, please wait...
Starting test execution, please wait...
A total of 1 test files matched the specified pattern.
A total of 1 test files matched the specified pattern.

Passed! - Failed: 0, Passed: 1, Skipped: 0, Total: 1, Duration: 50 ms - Redis.OM.Unit.Tests.dll (net7.0)

Passed! - Failed: 0, Passed: 1, Skipped: 0, Total: 1, Duration: 59 ms - Redis.OM.Unit.Tests.dll (net6.0)\n\nRemaining risk: the issue may depend on a different source expression shape than the current reproduction path; if the original report used a null-conditional or a different nullable form, that should be validated separately.

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Note

Low Risk
Low risk: adds a focused unit test only, with no production code changes.

Overview
Adds a regression unit test in SearchTests.cs to lock in the expected FT.SEARCH query serialization for Where(x => x.String2 != null && x.String2.Contains("Fal")) when combined with a Select projection and Take, ensuring the null-guard produces the correct -(ismissing(@String2)) + contains clause and RETURN fields.

^{Written by Cursor Bugbot for commit 9ad92f6. This will update automatically on new commits. Configure here.}

[jit-ci]

🛡️ Jit Security Scan Results

✅ No security findings were detected in this PR

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^{Security scan by Jit}