feat: set Creation, LastAccess and LastWrite time for files

src/System.IO.Abstractions.TestingHelpers/IMockFileDataAccessor.cs

@@ -8,6 +8,14 @@ namespace System.IO.Abstractions.TestingHelpers
  /// </summary>
  public interface IMockFileDataAccessor : IFileSystem
  {
+ /// <summary>
+ /// Adjust the times of the <paramref name="fileData"/>.
+ /// </summary>
+ /// <param name="fileData">The <see cref="MockFileData"/> for which the times should be adjusted.</param>
+ /// <param name="timeAdjustments">The adjustments to make on the <see cref="MockFileData"/>.</param>
+ /// <returns>The adjusted file.</returns>
+ MockFileData AdjustTimes(MockFileData fileData, TimeAdjustments timeAdjustments);
+
  /// <summary>
  /// Gets a file.
  /// </summary>

src/System.IO.Abstractions.TestingHelpers/MockDirectoryInfo.cs

@@ -62,15 +62,15 @@ public override FileAttributes Attributes
  /// <inheritdoc />
  public override DateTime CreationTime
  {
- get { return GetMockFileDataForRead().CreationTime.DateTime; }
+ get { return GetMockFileDataForRead().CreationTime.LocalDateTime; }
  set { GetMockFileDataForWrite().CreationTime = value; }
  }
 
  /// <inheritdoc />
  public override DateTime CreationTimeUtc
  {
  get { return GetMockFileDataForRead().CreationTime.UtcDateTime; }
- set { GetMockFileDataForWrite().CreationTime = value.ToLocalTime(); }
+ set { GetMockFileDataForWrite().CreationTime = value; }
  }
 
  /// <inheritdoc />
@@ -114,29 +114,29 @@ public override string FullName
  /// <inheritdoc />
  public override DateTime LastAccessTime
  {
- get { return GetMockFileDataForRead().LastAccessTime.DateTime; }
+ get { return GetMockFileDataForRead().LastAccessTime.LocalDateTime; }
  set { GetMockFileDataForWrite().LastAccessTime = value; }
  }
 
  /// <inheritdoc />
  public override DateTime LastAccessTimeUtc
  {
  get { return GetMockFileDataForRead().LastAccessTime.UtcDateTime; }
- set { GetMockFileDataForWrite().LastAccessTime = value.ToLocalTime(); }
+ set { GetMockFileDataForWrite().LastAccessTime = value; }
  }
 
  /// <inheritdoc />
  public override DateTime LastWriteTime
  {
- get { return GetMockFileDataForRead().LastWriteTime.DateTime; }
+ get { return GetMockFileDataForRead().LastWriteTime.LocalDateTime; }
  set { GetMockFileDataForWrite().LastWriteTime = value; }
  }
 
  /// <inheritdoc />
  public override DateTime LastWriteTimeUtc
  {
  get { return GetMockFileDataForRead().LastWriteTime.UtcDateTime; }
- set { GetMockFileDataForWrite().LastWriteTime = value.ToLocalTime(); }
+ set { GetMockFileDataForWrite().LastWriteTime = value; }
  }
 
 #if FEATURE_FILE_SYSTEM_INFO_LINK_TARGET

src/System.IO.Abstractions.TestingHelpers/MockFile.cs

@@ -55,12 +55,13 @@ public override void AppendAllText(string path, string contents, Encoding encodi
  if (!mockFileDataAccessor.FileExists(path))
  {
  VerifyDirectoryExists(path);
- mockFileDataAccessor.AddFile(path, new MockFileData(contents, encoding));
+ mockFileDataAccessor.AddFile(path, mockFileDataAccessor.AdjustTimes(new MockFileData(contents, encoding), TimeAdjustments.All));
  }
  else
  {
  var file = mockFileDataAccessor.GetFile(path);
  file.CheckFileAccess(path, FileAccess.Write);
+ mockFileDataAccessor.AdjustTimes(file, TimeAdjustments.LastAccessTime | TimeAdjustments.LastWriteTime);
  var bytesToAppend = encoding.GetBytes(contents);
  file.Contents = file.Contents.Concat(bytesToAppend).ToArray();
  }
@@ -124,7 +125,7 @@ public override void Copy(string sourceFileName, string destFileName, bool overw
  var sourceFileData = mockFileDataAccessor.GetFile(sourceFileName);
  sourceFileData.CheckFileAccess(sourceFileName, FileAccess.Read);
  var destFileData = new MockFileData(sourceFileData);
- destFileData.CreationTime = destFileData.LastAccessTime = DateTime.Now;
+mockFileDataAccessor.AdjustTimes(destFileData, TimeAdjustments.CreationTime | TimeAdjustments.LastAccessTime);
  mockFileDataAccessor.AddFile(destFileName, destFileData);
  }
 
@@ -151,6 +152,7 @@ private Stream CreateInternal(string path, FileAccess access, FileOptions option
  VerifyDirectoryExists(path);
 
  var mockFileData = new MockFileData(new byte[0]);
+ mockFileDataAccessor.AdjustTimes(mockFileData, TimeAdjustments.All);
  mockFileDataAccessor.AddFile(path, mockFileData);
  return OpenInternal(path, FileMode.Open, access, options);
  }
@@ -188,7 +190,7 @@ public override IFileSystemInfo CreateSymbolicLink(string path, string pathToTar
  var sourceFileData = mockFileDataAccessor.GetFile(pathToTarget);
  sourceFileData.CheckFileAccess(pathToTarget, FileAccess.Read);
  var destFileData = new MockFileData(new byte[0]);
- destFileData.CreationTime = destFileData.LastAccessTime = DateTime.Now;
+mockFileDataAccessor.AdjustTimes(destFileData, TimeAdjustments.CreationTime | TimeAdjustments.LastAccessTime);
  destFileData.LinkTarget = pathToTarget;
  mockFileDataAccessor.AddFile(path, destFileData);
 
@@ -436,7 +438,7 @@ public override void Move(string sourceFileName, string destFileName)
  VerifyDirectoryExists(destFileName);
 
  mockFileDataAccessor.RemoveFile(sourceFileName);
- mockFileDataAccessor.AddFile(destFileName, new MockFileData(sourceFile));
+ mockFileDataAccessor.AddFile(destFileName, mockFileDataAccessor.AdjustTimes(new MockFileData(sourceFile), TimeAdjustments.LastAccessTime));
  }
 
 #if FEATURE_FILE_MOVE_WITH_OVERWRITE
@@ -480,9 +482,9 @@ public override void Move(string sourceFileName, string destFileName, bool overw
  throw CommonExceptions.ProcessCannotAccessFileInUse();
  }
  VerifyDirectoryExists(destFileName);
-
+
  mockFileDataAccessor.RemoveFile(sourceFileName);
- mockFileDataAccessor.AddFile(destFileName, new MockFileData(sourceFile));
+ mockFileDataAccessor.AddFile(destFileName, mockFileDataAccessor.AdjustTimes(new MockFileData(sourceFile), TimeAdjustments.LastAccessTime));
  }
 #endif
 
@@ -539,6 +541,12 @@ private Stream OpenInternal(
 
  var mockFileData = mockFileDataAccessor.GetFile(path);
  mockFileData.CheckFileAccess(path, access);
+ var timeAdjustments = TimeAdjustments.LastAccessTime;
+ if (access.HasFlag(FileAccess.Write))
+ {
+ timeAdjustments |= TimeAdjustments.LastWriteTime;
+ }
+ mockFileDataAccessor.AdjustTimes(mockFileData, timeAdjustments);
 
  return new MockFileStream(mockFileDataAccessor, path, mode, access, options);
  }
@@ -578,7 +586,9 @@ public override byte[] ReadAllBytes(string path)
  throw CommonExceptions.FileNotFound(path);
  }
  mockFileDataAccessor.GetFile(path).CheckFileAccess(path, FileAccess.Read);
- return mockFileDataAccessor.GetFile(path).Contents.ToArray();
+ var fileData = mockFileDataAccessor.GetFile(path);
+ mockFileDataAccessor.AdjustTimes(fileData, TimeAdjustments.LastAccessTime);
+ return fileData.Contents.ToArray();
  }
 
  /// <inheritdoc />
@@ -590,10 +600,11 @@ public override string[] ReadAllLines(string path)
  {
  throw CommonExceptions.FileNotFound(path);
  }
- mockFileDataAccessor.GetFile(path).CheckFileAccess(path, FileAccess.Read);
+ var fileData = mockFileDataAccessor.GetFile(path);
+ fileData.CheckFileAccess(path, FileAccess.Read);
+ mockFileDataAccessor.AdjustTimes(fileData, TimeAdjustments.LastAccessTime);
 
- return mockFileDataAccessor
- .GetFile(path)
+ return fileData
  .TextContents
  .SplitLines();
  }
@@ -613,9 +624,11 @@ public override string[] ReadAllLines(string path, Encoding encoding)
  throw CommonExceptions.FileNotFound(path);
  }
 
- mockFileDataAccessor.GetFile(path).CheckFileAccess(path, FileAccess.Read);
+ var fileData = mockFileDataAccessor.GetFile(path);
+ fileData.CheckFileAccess(path, FileAccess.Read);
+ mockFileDataAccessor.AdjustTimes(fileData, TimeAdjustments.LastAccessTime);
 
- using (var ms = new MemoryStream(mockFileDataAccessor.GetFile(path).Contents))
+ using (var ms = new MemoryStream(fileData.Contents))
  using (var sr = new StreamReader(ms, encoding))
  {
  return sr.ReadToEnd().SplitLines();
@@ -713,6 +726,7 @@ public override void SetAccessControl(string path, FileSecurity fileSecurity)
  }
 
  var fileData = mockFileDataAccessor.GetFile(path);
+ mockFileDataAccessor.AdjustTimes(fileData, TimeAdjustments.LastAccessTime);
  fileData.AccessControl = fileSecurity;
  }
 
@@ -736,6 +750,7 @@ public override void SetAttributes(string path, FileAttributes fileAttributes)
  }
  else
  {
+ mockFileDataAccessor.AdjustTimes(possibleFileData, TimeAdjustments.LastAccessTime);
  possibleFileData.Attributes = fileAttributes;
  }
  }
@@ -824,7 +839,7 @@ public override void WriteAllBytes(string path, byte[] bytes)
  mockFileDataAccessor.PathVerifier.IsLegalAbsoluteOrRelative(path, "path");
  VerifyDirectoryExists(path);
 
- mockFileDataAccessor.AddFile(path, new MockFileData(bytes.ToArray()));
+ mockFileDataAccessor.AddFile(path, mockFileDataAccessor.AdjustTimes(new MockFileData(bytes.ToArray()), TimeAdjustments.All));
  }
 
  /// <summary>
@@ -1094,7 +1109,7 @@ public override void WriteAllText(string path, string contents, Encoding encodin
  VerifyDirectoryExists(path);
 
  MockFileData data = contents == null ? new MockFileData(new byte[0]) : new MockFileData(contents, encoding);
- mockFileDataAccessor.AddFile(path, data);
+ mockFileDataAccessor.AddFile(path, mockFileDataAccessor.AdjustTimes(data, TimeAdjustments.All));
  }
 
  internal static string ReadAllBytes(byte[] contents, Encoding encoding)
@@ -1110,6 +1125,7 @@ private string ReadAllTextInternal(string path, Encoding encoding)
  {
  var mockFileData = mockFileDataAccessor.GetFile(path);
  mockFileData.CheckFileAccess(path, FileAccess.Read);
+ mockFileDataAccessor.AdjustTimes(mockFileData, TimeAdjustments.LastAccessTime);
  return ReadAllBytes(mockFileData.Contents, encoding);
  }
 

src/System.IO.Abstractions.TestingHelpers/MockFileData.cs

@@ -49,7 +49,10 @@ public class MockFileData
  /// </summary>
  private MockFileData()
  {
- // empty
+ var now = DateTime.UtcNow;
+ LastWriteTime = now;
+ LastAccessTime = now;
+ CreationTime = now;
  }
 
  /// <summary>
@@ -78,6 +81,7 @@ public MockFileData(string textContents, Encoding encoding)
  /// <param name="contents">The actual content.</param>
  /// <exception cref="ArgumentNullException">Thrown if <paramref name="contents"/> is <see langword="null" />.</exception>
  public MockFileData(byte[] contents)
+ : this()
  {
  Contents = contents ?? throw new ArgumentNullException(nameof(contents));
  }
@@ -126,17 +130,32 @@ public string TextContents
  /// <summary>
  /// Gets or sets the date and time the <see cref="MockFileData"/> was created.
  /// </summary>
- public DateTimeOffset CreationTime { get; set; } = new DateTimeOffset(2010, 01, 02, 00, 00, 00, TimeSpan.FromHours(4));
+ public DateTimeOffset CreationTime
+ {
+ get { return creationTime; }
+ set{ creationTime = value.ToUniversalTime(); }
+ }
+ private DateTimeOffset creationTime;
 
  /// <summary>
  /// Gets or sets the date and time of the <see cref="MockFileData"/> was last accessed to.
  /// </summary>
- public DateTimeOffset LastAccessTime { get; set; } = new DateTimeOffset(2010, 02, 04, 00, 00, 00, TimeSpan.FromHours(4));
+ public DateTimeOffset LastAccessTime
+ {
+ get { return lastAccessTime; }
+ set { lastAccessTime = value.ToUniversalTime(); }
+ }
+ private DateTimeOffset lastAccessTime;
 
  /// <summary>
  /// Gets or sets the date and time of the <see cref="MockFileData"/> was last written to.
  /// </summary>
- public DateTimeOffset LastWriteTime { get; set; } = new DateTimeOffset(2010, 01, 04, 00, 00, 00, TimeSpan.FromHours(4));
+ public DateTimeOffset LastWriteTime
+ {
+ get { return lastWriteTime; }
+ set { lastWriteTime = value.ToUniversalTime(); }
+ }
+ private DateTimeOffset lastWriteTime;
 
 #if FEATURE_FILE_SYSTEM_INFO_LINK_TARGET
  /// <summary>

src/System.IO.Abstractions.TestingHelpers/MockFileInfo.cs

@@ -1,6 +1,5 @@
 using System.Runtime.Versioning;
 using System.Security.AccessControl;
-using System.Text;
 
 namespace System.IO.Abstractions.TestingHelpers
 {
@@ -60,12 +59,12 @@ public override DateTime CreationTime
  get
  {
  var mockFileData = GetMockFileDataForRead();
- return mockFileData.CreationTime.DateTime;
+ return mockFileData.CreationTime.LocalDateTime;
  }
  set
  {
  var mockFileData = GetMockFileDataForWrite();
- mockFileData.CreationTime = value;
+ mockFileData.CreationTime = AdjustUnspecifiedKind(value, DateTimeKind.Local);
  }
  }
 
@@ -80,7 +79,7 @@ public override DateTime CreationTimeUtc
  set
  {
  var mockFileData = GetMockFileDataForWrite();
- mockFileData.CreationTime = value.ToLocalTime();
+ mockFileData.CreationTime = AdjustUnspecifiedKind(value, DateTimeKind.Utc);
  }
  }
 
@@ -117,12 +116,12 @@ public override DateTime LastAccessTime
  get
  {
  var mockFileData = GetMockFileDataForRead();
- return mockFileData.LastAccessTime.DateTime;
+ return mockFileData.LastAccessTime.LocalDateTime;
  }
  set
  {
  var mockFileData = GetMockFileDataForWrite();
- mockFileData.LastAccessTime = value;
+ mockFileData.LastAccessTime = AdjustUnspecifiedKind(value, DateTimeKind.Local);
  }
  }
 
@@ -137,7 +136,7 @@ public override DateTime LastAccessTimeUtc
  set
  {
  var mockFileData = GetMockFileDataForWrite();
- mockFileData.LastAccessTime = value;
+ mockFileData.LastAccessTime = AdjustUnspecifiedKind(value, DateTimeKind.Utc);
  }
  }
 
@@ -147,12 +146,12 @@ public override DateTime LastWriteTime
  get
  {
  var mockFileData = GetMockFileDataForRead();
- return mockFileData.LastWriteTime.DateTime;
+ return mockFileData.LastWriteTime.LocalDateTime;
  }
  set
  {
  var mockFileData = GetMockFileDataForWrite();
- mockFileData.LastWriteTime = value;
+ mockFileData.LastWriteTime = AdjustUnspecifiedKind(value, DateTimeKind.Local);
  }
  }
 
@@ -167,7 +166,7 @@ public override DateTime LastWriteTimeUtc
  set
  {
  var mockFileData = GetMockFileDataForWrite();
- mockFileData.LastWriteTime = value.ToLocalTime();
+ mockFileData.LastWriteTime = AdjustUnspecifiedKind(value, DateTimeKind.Utc);
  }
  }
 
@@ -381,6 +380,16 @@ public override string ToString()
  return originalPath;
  }
 
+ private static DateTime AdjustUnspecifiedKind(DateTime time, DateTimeKind fallbackKind)
+ {
+ if (time.Kind == DateTimeKind.Unspecified)
+ {
+ return DateTime.SpecifyKind(time, fallbackKind);
+ }
+
+ return time;
+ }
+
  private MockFileData GetMockFileDataForRead()
  {
  if (refreshOnNextRead)