Possible null reference argument for parameter 'directoryPath' in 'FileProcessor.FileProcessor(ILog logger, IMetadataExtractor metadataExtractor, IFileService fileService, string directoryPath, string fileExtension)'.

Possible null reference argument for parameter 'fileExtension' in 'FileProcessor.FileProcessor(ILog logger, IMetadataExtractor metadataExtractor, IFileService fileService, string directoryPath, string fileExtension)'.

Converting null literal or possible null value to non-nullable type.

Possible null reference argument for parameter 'path1' in 'string Path.Combine(string path1, string path2)'.

Dereference of a possibly null reference.

Non-nullable field '_scheduler' must contain a non-null value when exiting constructor. Consider declaring the field as nullable.

Consider using the constraint model, Assert.That(actual, Is.EqualTo(expected)), instead of the classic model, Assert.AreEqual(expected, actual) (https://github.com/nunit/nunit.analyzers/tree/master/documentation/NUnit2005.md)

Possible null reference argument for parameter 'directoryPath' in 'FileProcessor.FileProcessor(ILog logger, IMetadataExtractor metadataExtractor, IFileService fileService, string directoryPath, string fileExtension)'.

Possible null reference argument for parameter 'fileExtension' in 'FileProcessor.FileProcessor(ILog logger, IMetadataExtractor metadataExtractor, IFileService fileService, string directoryPath, string fileExtension)'.