Fix bugs and add async methods with tests #4
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This commit: 1. Adds proper error handling in MoveWithOverwrite and Rename methods 2. Adds consistent null checking across all methods 3. Updates stream disposal to use modern C# syntax 4. Adds file name validation 5. Adds comprehensive XML documentation comments 6. Adds asynchronous versions of all synchronous methods 7. Fixes the Append test that was incorrectly using Write 8. Adds comprehensive tests for all new async methods
WalkthroughThis update introduces asynchronous methods to the file system interface and its implementation, expanding support for async file operations such as listing, existence checks, deletion, document retrieval, moving, overwriting, and renaming. Corresponding async unit tests are added. All public methods now include comprehensive XML documentation, and input validation and error handling are improved throughout. Changes
Sequence Diagram(s)sequenceDiagram
participant Test
participant IFileSystem
participant FileSystem
participant FileSystem_IO
Test->>IFileSystem: Call Async Method (e.g., ListAsync)
IFileSystem->>FileSystem: Forward Async Call
FileSystem->>FileSystem_IO: Perform Async File Operation
FileSystem_IO-->>FileSystem: Return Result
FileSystem-->>IFileSystem: Return Task<Result>
IFileSystem-->>Test: Await and Return Result
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Actionable comments posted: 1
🧹 Nitpick comments (6)
source/StoneAge.Data.FileSystem/Domain/IDocument.cs (1)
1-1: Remove unused using statement.The
using System.Text;directive is not used in this file and should be removed to keep the code clean.-using System.Text;source/StoneAge.Data.FileSystem/FileSystem.cs (5)
15-19: Consider thread safety for the static NullDocument field.As mentioned in the PR objectives, the static
NullDocumentfield may need thread safety improvements in the future. While the field reference is readonly, the Document object's properties could potentially be modified if accessed concurrently.
76-86: Improve file size formatting for better readability.The current implementation converts the file size to a string without formatting, which may result in many decimal places. Consider formatting the output for better readability.
- Size = Convert_Bytes_To_Megabytes(info.Length).ToString() + Size = $"{Convert_Bytes_To_Megabytes(info.Length):F2} MB"Additionally, consider extracting the conversion function as a private method for potential reuse across the class.
96-99: Consider using ConfigureAwait(false) for library code.For better performance in library code, consider using
ConfigureAwait(false)on the async operations to avoid capturing the synchronization context unnecessarily.Example for
ListAsync:- return await Task.Run(() => List(directory)); + return await Task.Run(() => List(directory)).ConfigureAwait(false);Apply similar changes to other async wrapper methods:
ExistsAsync,DeleteAsync,GetDocumentAsync,MoveAsync,MoveWithOverwriteAsync, andRenameAsync.Also applies to: 121-124, 154-157, 196-199, 231-234, 271-274, 315-318
369-371: Update documentation to specify UTF-8 encoding.The XML documentation mentions "default encoding for the system," but
File.ReadAllLinesAsyncspecifically uses UTF-8 encoding by default.- /// This method assumes the file is encoded in the default encoding for the system. + /// This method assumes the file is encoded in UTF-8.
436-436: Fix typo in error message.- result.ErrorMessages.Add($"An error occured creating directory structure [{e.Message}]"); + result.ErrorMessages.Add($"An error occurred creating directory structure [{e.Message}]");
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📒 Files selected for processing (5)
source/StoneAge.Data.FileSystem.Tests/FileSystemTests.cs(1 hunks)source/StoneAge.Data.FileSystem/Document.cs(1 hunks)source/StoneAge.Data.FileSystem/Domain/IDocument.cs(1 hunks)source/StoneAge.Data.FileSystem/Domain/IFileSystem.cs(1 hunks)source/StoneAge.Data.FileSystem/FileSystem.cs(1 hunks)
🧰 Additional context used
🧬 Code Graph Analysis (4)
source/StoneAge.Data.FileSystem/Domain/IDocument.cs (4)
source/StoneAge.Data.FileSystem/Domain/IFileSystem.cs (2)
IDocument(73-73)IDocument(80-80)source/StoneAge.Data.FileSystem/DocumentBuilder.cs (1)
IDocument(48-56)source/StoneAge.Data.FileSystem/FileSystem.cs (2)
IDocument(164-167)IDocument(177-189)source/StoneAge.Data.FileSystem.Tests/FileSystemTests.cs (1)
IDocument(1170-1177)
source/StoneAge.Data.FileSystem/Document.cs (5)
source/StoneAge.Data.FileSystem/Domain/IFileSystem.cs (2)
IDocument(73-73)IDocument(80-80)source/StoneAge.Data.FileSystem/DocumentBuilder.cs (1)
IDocument(48-56)source/StoneAge.Data.FileSystem/Domain/IDocumentBuilderGeneration.cs (1)
IDocument(5-5)source/StoneAge.Data.FileSystem/FileSystem.cs (2)
IDocument(164-167)IDocument(177-189)source/StoneAge.Data.FileSystem.Tests/FileSystemTests.cs (1)
IDocument(1170-1177)
source/StoneAge.Data.FileSystem/Domain/IFileSystem.cs (6)
source/StoneAge.Data.FileSystem/Domain/WriteFileResult.cs (2)
WriteFileResult(5-16)WriteFileResult(12-15)source/StoneAge.Data.FileSystem/FileSystem.cs (10)
WriteFileResult(394-418)WriteFileResult(425-442)IDocument(164-167)IDocument(177-189)IEnumerable(69-89)Exists(106-114)Delete(130-147)Move(207-223)MoveWithOverwrite(242-263)Rename(282-307)source/StoneAge.Data.FileSystem/DocumentBuilder.cs (1)
IDocument(48-56)source/StoneAge.Data.FileSystem/Domain/IDocumentBuilderGeneration.cs (1)
IDocument(5-5)source/StoneAge.Data.FileSystem.Tests/FileSystemTests.cs (1)
IDocument(1170-1177)source/StoneAge.Data.FileSystem/Domain/FileInformation.cs (1)
FileInformation(3-7)
source/StoneAge.Data.FileSystem/FileSystem.cs (6)
source/StoneAge.Data.FileSystem/Domain/IFileSystem.cs (18)
IDocument(73-73)IDocument(80-80)Task(17-17)Task(25-25)Task(39-39)Task(53-53)Task(66-66)Task(87-87)Task(94-94)Task(110-110)Task(126-126)Task(142-142)IEnumerable(32-32)Exists(46-46)Delete(59-59)Move(102-102)MoveWithOverwrite(118-118)Rename(134-134)source/StoneAge.Data.FileSystem/DocumentBuilder.cs (2)
IDocument(48-56)DocumentBuilder(8-67)source/StoneAge.Data.FileSystem.Tests/FileSystemTests.cs (1)
IDocument(1170-1177)source/StoneAge.Data.FileSystem/Document.cs (2)
Document(10-37)ToString(33-36)source/StoneAge.Data.FileSystem/Domain/WriteFileResult.cs (2)
WriteFileResult(5-16)WriteFileResult(12-15)source/StoneAge.Data.FileSystem/Domain/FileInformation.cs (1)
FileInformation(3-7)
🔇 Additional comments (11)
source/StoneAge.Data.FileSystem/Domain/IFileSystem.cs (1)
1-144: Excellent async interface design with comprehensive documentation!The addition of asynchronous counterparts to all file system operations follows .NET async patterns perfectly. The XML documentation is thorough and consistent across all methods. The interface maintains backward compatibility while expanding functionality.
source/StoneAge.Data.FileSystem/Domain/IDocument.cs (1)
5-19: Well-documented interface with clear property descriptions.The XML documentation clearly explains the purpose of each property and the interface itself. This will greatly improve API usability.
source/StoneAge.Data.FileSystem/Document.cs (1)
6-37: Excellent documentation with important encoding clarifications.The XML documentation is comprehensive and particularly valuable for the
ToString()method, which clearly explains the UTF-8 encoding assumption and potential issues with other encodings. This will help prevent encoding-related bugs in consumer code.source/StoneAge.Data.FileSystem.Tests/FileSystemTests.cs (8)
268-323: Comprehensive async test coverage with good consistency validation.The
ListAsynctest class properly mirrors the synchronous tests and includes a valuable consistency test to ensure both versions behave identically. This pattern helps maintain behavioral parity between sync and async implementations.
381-453: Well-structured async existence checks with comprehensive edge case testing.The
ExistsAsynctests cover all the important scenarios including null/whitespace inputs, existing/non-existing files, and directory existence. The consistency test at the end is particularly valuable for ensuring sync/async parity.
516-593: Thorough async deletion test coverage.The
DeleteAsynctest class properly validates all deletion scenarios and includes good consistency testing between sync and async versions. The tests appropriately handle edge cases like null paths and non-existent files.
639-697: Complete async document retrieval testing.The
GetDocumentAsynctests comprehensively cover document retrieval scenarios and include proper validation that both sync and async versions return equivalent results (comparing both Name and Data properties).
853-940: Robust async file move operation testing.The
MoveAsynctest class covers all the critical move scenarios including success cases, failures due to missing source files, and conflicts with existing destination files. The consistency test properly validates that both file operations complete successfully.
965-1024: Comprehensive async move-with-overwrite testing.The
MoveWithOverwriteAsynctests properly validate the overwrite functionality and include good consistency testing. The test setup with different content for source and destination files ensures proper validation of the move operation.
1069-1133: Complete async rename operation testing.The
RenameAsynctest class provides thorough coverage of rename scenarios and includes proper consistency validation between sync and async versions. The tests appropriately use unique file names to avoid conflicts.
1-1181: Outstanding comprehensive test suite for async file operations.This test file demonstrates excellent testing practices:
- Complete coverage of all new async methods
- Proper mirroring of existing sync test patterns
- Valuable consistency tests ensuring sync/async behavioral parity
- Good edge case coverage (null inputs, missing files, etc.)
- Clean test organization with nested test fixtures
The 92 passing tests mentioned in the PR objectives indicate robust validation of the new async functionality.
| private WriteFileResult Write_File_To_Path(IDocument file, string filePath, FileMode fileMode) | ||
| { | ||
| var result = new WriteFileResult(); | ||
|
|
||
| if (file.Data == null) | ||
| { | ||
| result.ErrorMessages.Add("No file data provided; cannot write file."); | ||
| return result; | ||
| } | ||
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|
||
| try | ||
| { | ||
| // Modern using declaration (C# 8.0+) | ||
| using var stream = new FileStream(filePath, fileMode); | ||
| stream.Write(file.Data); | ||
|
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| result.FullFilePath = filePath; | ||
| } | ||
| catch (Exception e) | ||
| { | ||
| result.ErrorMessages.Add($"An error occured writing the file [{e.Message}]"); | ||
| } | ||
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| return result; | ||
| } |
There was a problem hiding this comment.
Use async I/O operations and fix typo.
This method is called from async methods but uses synchronous I/O. Also, there's a typo in the error message.
- private WriteFileResult Write_File_To_Path(IDocument file, string filePath, FileMode fileMode)
+ private async Task<WriteFileResult> Write_File_To_PathAsync(IDocument file, string filePath, FileMode fileMode)
{
var result = new WriteFileResult();
if (file.Data == null)
{
result.ErrorMessages.Add("No file data provided; cannot write file.");
return result;
}
try
{
// Modern using declaration (C# 8.0+)
using var stream = new FileStream(filePath, fileMode);
- stream.Write(file.Data);
+ await stream.WriteAsync(file.Data).ConfigureAwait(false);
result.FullFilePath = filePath;
}
catch (Exception e)
{
- result.ErrorMessages.Add($"An error occured writing the file [{e.Message}]");
+ result.ErrorMessages.Add($"An error occurred writing the file [{e.Message}]");
}
return result;
}Also update the callers in Write (line 58) and Append (line 358) methods to use await.
📝 Committable suggestion
‼️ IMPORTANT
Carefully review the code before committing. Ensure that it accurately replaces the highlighted code, contains no missing lines, and has no issues with indentation. Thoroughly test & benchmark the code to ensure it meets the requirements.
| private WriteFileResult Write_File_To_Path(IDocument file, string filePath, FileMode fileMode) | |
| { | |
| var result = new WriteFileResult(); | |
| if (file.Data == null) | |
| { | |
| result.ErrorMessages.Add("No file data provided; cannot write file."); | |
| return result; | |
| } | |
| try | |
| { | |
| // Modern using declaration (C# 8.0+) | |
| using var stream = new FileStream(filePath, fileMode); | |
| stream.Write(file.Data); | |
| result.FullFilePath = filePath; | |
| } | |
| catch (Exception e) | |
| { | |
| result.ErrorMessages.Add($"An error occured writing the file [{e.Message}]"); | |
| } | |
| return result; | |
| } | |
| private async Task<WriteFileResult> Write_File_To_PathAsync(IDocument file, string filePath, FileMode fileMode) | |
| { | |
| var result = new WriteFileResult(); | |
| if (file.Data == null) | |
| { | |
| result.ErrorMessages.Add("No file data provided; cannot write file."); | |
| return result; | |
| } | |
| try | |
| { | |
| // Modern using declaration (C# 8.0+) | |
| using var stream = new FileStream(filePath, fileMode); | |
| await stream.WriteAsync(file.Data).ConfigureAwait(false); | |
| result.FullFilePath = filePath; | |
| } | |
| catch (Exception e) | |
| { | |
| result.ErrorMessages.Add($"An error occurred writing the file [{e.Message}]"); | |
| } | |
| return result; | |
| } |
🤖 Prompt for AI Agents
In source/StoneAge.Data.FileSystem/FileSystem.cs from lines 394 to 418, the
Write_File_To_Path method uses synchronous file I/O and contains a typo in the
error message ("occured" should be "occurred"). Refactor this method to use
async file I/O operations such as FileStream.WriteAsync and mark the method as
async returning Task<WriteFileResult>. Correct the typo in the error message
string. Additionally, update the callers of this method in the Write method
around line 58 and the Append method around line 358 to use await when calling
the updated async Write_File_To_Path method.
1 participant
Summary
This PR addresses several issues in the codebase and adds async versions of all synchronous methods.
Changes
Bug Fixes:
Improvements:
New Features:
Testing
All 92 tests are passing, including the new tests for async methods. Each async method has a test to verify it behaves the same as its synchronous counterpart.
Future Work
Thread safety for static properties like NullDocument could be improved in a future PR.
Summary by CodeRabbit