Fix SFTP file UTC time handling

src/Renci.SshNet.Tests/Classes/ClientAuthenticationTest_Success_MultiList_PartialSuccessLimitReachedFollowedBySuccessInAlternateBranch.cs

@@ -181,4 +181,4 @@ public void AuthenticateOnPublicKeyAuthenticationMethodShouldHaveBeenInvokedTwic
             PublicKeyAuthenticationMethodMock.Verify(p => p.Authenticate(SessionMock.Object), Times.Exactly(2));
         }
     }
-}
+}

src/Renci.SshNet.Tests/Classes/Common/BigIntegerTest.cs

@@ -1506,10 +1506,12 @@ public void DefaultCtorWorks()
             Assert.AreEqual("0", a.ToString(), "#4");
 
             a = new BigInteger();
+#pragma warning disable CS1718 // Comparison made to same variable
             Assert.AreEqual(true, a == a, "#5");
 
             a = new BigInteger();
             Assert.AreEqual(false, a < a, "#6");
+#pragma warning restore CS1718 // Comparison made to same variable
 
             a = new BigInteger();
             Assert.AreEqual(true, a < 10L, "#7");

src/Renci.SshNet.Tests/Classes/Messages/Connection/ChannelExtendedDataMessageTest.cs

@@ -30,7 +30,7 @@ public void ChannelExtendedDataMessageConstructorTest()
         [Ignore] // placeholder
         public void ChannelExtendedDataMessageConstructorTest1()
         {
-            uint localChannelNumber = 0; // TODO: Initialize to an appropriate value
+            //uint localChannelNumber = 0; // TODO: Initialize to an appropriate value
             //ChannelExtendedDataMessage target = new ChannelExtendedDataMessage(localChannelNumber, null, null);
             Assert.Inconclusive("TODO: Implement code to verify target");
         }

src/Renci.SshNet.Tests/Classes/Sftp/SftpFileReaderTestBase.cs

@@ -38,7 +38,8 @@ public void SetUp()
 
         protected static SftpFileAttributes CreateSftpFileAttributes(long size)
         {
-            return new SftpFileAttributes(default(DateTime), default(DateTime), size, default(int), default(int), default(uint), null);
+            var utcDefault = DateTime.SpecifyKind(default(DateTime), DateTimeKind.Utc);
+            return new SftpFileAttributes(utcDefault, utcDefault, size, default(int), default(int), default(uint), null);
         }
 
         protected static byte[] CreateByteArray(Random random, int length)

src/Renci.SshNet.Tests/Classes/Sftp/SftpFileStreamTest_Ctor_FileModeAppend_FileAccessWrite.cs

@@ -34,8 +34,8 @@ protected override void SetupData()
             _readBufferSize = (uint) _random.Next(5, 1000);
             _writeBufferSize = (uint) _random.Next(5, 1000);
             _handle = GenerateRandom(_random.Next(1, 10), _random);
-            _fileAttributes = new SftpFileAttributesBuilder().WithLastAccessTime(DateTime.Now.AddSeconds(_random.Next()))
-                                                             .WithLastWriteTime(DateTime.Now.AddSeconds(_random.Next()))
+            _fileAttributes = new SftpFileAttributesBuilder().WithLastAccessTime(DateTime.UtcNow.AddSeconds(_random.Next()))
+                                                             .WithLastWriteTime(DateTime.UtcNow.AddSeconds(_random.Next()))
                                                              .WithSize(_random.Next())
                                                              .WithUserId(_random.Next())
                                                              .WithGroupId(_random.Next())

src/Renci.SshNet.Tests/Classes/Sftp/SftpFileStreamTest_SetLength_DataInReadBuffer_NewLengthGreatherThanPosition.cs

@@ -53,8 +53,8 @@ protected override void SetupData()
             _fileAttributes = new SftpFileAttributesBuilder().WithExtension("X", "ABC")
                                                              .WithExtension("V", "VValue")
                                                              .WithGroupId(random.Next())
-                                                             .WithLastAccessTime(DateTime.Now.AddSeconds(random.Next()))
-                                                             .WithLastWriteTime(DateTime.Now.AddSeconds(random.Next()))
+                                                             .WithLastAccessTime(DateTime.UtcNow.AddSeconds(random.Next()))
+                                                             .WithLastWriteTime(DateTime.UtcNow.AddSeconds(random.Next()))
                                                              .WithPermissions((uint) random.Next())
                                                              .WithSize(_length + 100)
                                                              .WithUserId(random.Next())
@@ -201,4 +201,4 @@ public void WriteShouldStartFromSamePositionAsBeforeSetLength()
             SftpSessionMock.Verify(p => p.IsOpen, Times.Exactly(4));
         }
     }
-}
+}

src/Renci.SshNet.Tests/Classes/Sftp/SftpFileStreamTest_SetLength_DataInReadBuffer_NewLengthLessThanPosition.cs

@@ -50,8 +50,8 @@ protected override void SetupData()
             _fileAttributes = new SftpFileAttributesBuilder().WithExtension("X", "ABC")
                                                              .WithExtension("V", "VValue")
                                                              .WithGroupId(random.Next())
-                                                             .WithLastAccessTime(DateTime.Now.AddSeconds(random.Next()))
-                                                             .WithLastWriteTime(DateTime.Now.AddSeconds(random.Next()))
+                                                             .WithLastAccessTime(DateTime.UtcNow.AddSeconds(random.Next()))
+                                                             .WithLastWriteTime(DateTime.UtcNow.AddSeconds(random.Next()))
                                                              .WithPermissions((uint)random.Next())
                                                              .WithSize(_length + 100)
                                                              .WithUserId(random.Next())

src/Renci.SshNet.Tests/Classes/Sftp/SftpFileStreamTest_SetLength_DataInWriteBuffer_NewLengthGreatherThanPosition.cs

@@ -54,8 +54,8 @@ protected override void SetupData()
             _fileAttributes = new SftpFileAttributesBuilder().WithExtension("X", "ABC")
                                                              .WithExtension("V", "VValue")
                                                              .WithGroupId(random.Next())
-                                                             .WithLastAccessTime(DateTime.Now.AddSeconds(random.Next()))
-                                                             .WithLastWriteTime(DateTime.Now.AddSeconds(random.Next()))
+                                                             .WithLastAccessTime(DateTime.UtcNow.AddSeconds(random.Next()))
+                                                             .WithLastWriteTime(DateTime.UtcNow.AddSeconds(random.Next()))
                                                              .WithPermissions((uint)random.Next())
                                                              .WithSize(_length + 100)
                                                              .WithUserId(random.Next())

src/Renci.SshNet.Tests/Classes/Sftp/SftpFileStreamTest_SetLength_DataInWriteBuffer_NewLengthLessThanPosition.cs

@@ -54,8 +54,8 @@ protected override void SetupData()
             _fileAttributes = new SftpFileAttributesBuilder().WithExtension("X", "ABC")
                                                              .WithExtension("V", "VValue")
                                                              .WithGroupId(random.Next())
-                                                             .WithLastAccessTime(DateTime.Now.AddSeconds(random.Next()))
-                                                             .WithLastWriteTime(DateTime.Now.AddSeconds(random.Next()))
+                                                             .WithLastAccessTime(DateTime.UtcNow.AddSeconds(random.Next()))
+                                                             .WithLastWriteTime(DateTime.UtcNow.AddSeconds(random.Next()))
                                                              .WithPermissions((uint) random.Next())
                                                              .WithSize(_length + 100)
                                                              .WithUserId(random.Next())

src/Renci.SshNet.Tests/Classes/Sftp/SftpFileStreamTest_SetLength_SessionOpen_FIleAccessReadWrite.cs

@@ -48,8 +48,8 @@ protected void Arrange()
             _writeBufferSize = (uint) random.Next(0, 1000);
             _length = random.Next();
 
-            _fileAttributesLastAccessTime = DateTime.Now.AddSeconds(random.Next());
-            _fileAttributesLastWriteTime = DateTime.Now.AddSeconds(random.Next());
+            _fileAttributesLastAccessTime = DateTime.UtcNow.AddSeconds(random.Next());
+            _fileAttributesLastWriteTime = DateTime.UtcNow.AddSeconds(random.Next());
             _fileAttributesSize = random.Next();
             _fileAttributesUserId = random.Next();
             _fileAttributesGroupId = random.Next();

src/Renci.SshNet.Tests/Classes/Sftp/SftpFileStreamTest_SetLength_SessionOpen_FIleAccessWrite.cs

@@ -48,8 +48,8 @@ protected void Arrange()
             _writeBufferSize = (uint) random.Next(0, 1000);
             _length = random.Next();
 
-            _fileAttributesLastAccessTime = DateTime.Now.AddSeconds(random.Next());
-            _fileAttributesLastWriteTime = DateTime.Now.AddSeconds(random.Next());
+            _fileAttributesLastAccessTime = DateTime.UtcNow.AddSeconds(random.Next());
+            _fileAttributesLastWriteTime = DateTime.UtcNow.AddSeconds(random.Next());
             _fileAttributesSize = random.Next();
             _fileAttributesUserId = random.Next();
             _fileAttributesGroupId = random.Next();

src/Renci.SshNet.Tests/Classes/Sftp/SftpFileStreamTest_Write_SessionOpen_CountGreatherThanTwoTimesTheWriteBufferSize.cs

@@ -119,8 +119,8 @@ public void PositionShouldBeNumberOfBytesWrittenToFileAndNUmberOfBytesInBuffer()
         [TestMethod]
         public void LengthShouldFlushBufferAndReturnSizeOfFile()
         {
-            var lengthFileAttributes = new SftpFileAttributes(DateTime.Now,
-                                                              DateTime.Now,
+            var lengthFileAttributes = new SftpFileAttributes(DateTime.UtcNow,
+                                                              DateTime.UtcNow,
                                                               _random.Next(),
                                                               _random.Next(),
                                                               _random.Next(),

src/Renci.SshNet.Tests/Classes/SftpClientTest.cs

@@ -1076,7 +1076,9 @@ public void SetLastAccessTimeTest()
             SftpClient target = new SftpClient(connectionInfo); // TODO: Initialize to an appropriate value
             string path = string.Empty; // TODO: Initialize to an appropriate value
             DateTime lastAccessTime = new DateTime(); // TODO: Initialize to an appropriate value
+#pragma warning disable CS0618 // Type or member is obsolete
             target.SetLastAccessTime(path, lastAccessTime);
+#pragma warning restore CS0618 // Type or member is obsolete
             Assert.Inconclusive("A method that does not return a value cannot be verified.");
         }
 
@@ -1091,7 +1093,9 @@ public void SetLastAccessTimeUtcTest()
             SftpClient target = new SftpClient(connectionInfo); // TODO: Initialize to an appropriate value
             string path = string.Empty; // TODO: Initialize to an appropriate value
             DateTime lastAccessTimeUtc = new DateTime(); // TODO: Initialize to an appropriate value
+#pragma warning disable CS0618 // Type or member is obsolete
             target.SetLastAccessTimeUtc(path, lastAccessTimeUtc);
+#pragma warning restore CS0618 // Type or member is obsolete
             Assert.Inconclusive("A method that does not return a value cannot be verified.");
         }
 
@@ -1106,7 +1110,9 @@ public void SetLastWriteTimeTest()
             SftpClient target = new SftpClient(connectionInfo); // TODO: Initialize to an appropriate value
             string path = string.Empty; // TODO: Initialize to an appropriate value
             DateTime lastWriteTime = new DateTime(); // TODO: Initialize to an appropriate value
+#pragma warning disable CS0618 // Type or member is obsolete
             target.SetLastWriteTime(path, lastWriteTime);
+#pragma warning restore CS0618 // Type or member is obsolete
             Assert.Inconclusive("A method that does not return a value cannot be verified.");
         }
 
@@ -1121,7 +1127,9 @@ public void SetLastWriteTimeUtcTest()
             SftpClient target = new SftpClient(connectionInfo); // TODO: Initialize to an appropriate value
             string path = string.Empty; // TODO: Initialize to an appropriate value
             DateTime lastWriteTimeUtc = new DateTime(); // TODO: Initialize to an appropriate value
+#pragma warning disable CS0618 // Type or member is obsolete
             target.SetLastWriteTimeUtc(path, lastWriteTimeUtc);
+#pragma warning restore CS0618 // Type or member is obsolete
             Assert.Inconclusive("A method that does not return a value cannot be verified.");
         }
 
@@ -1403,4 +1411,4 @@ private class TestInfo
             public SftpDownloadAsyncResult DownloadResult { get; set; }
         }
     }
-}
+}

src/Renci.SshNet.Tests/Common/Extensions.cs

@@ -49,8 +49,8 @@ internal static SftpFileAttributes Clone(this SftpFileAttributes value)
                 clonedExtensions = null;
             }
 
-            return new SftpFileAttributes(value.LastAccessTime,
-                                          value.LastWriteTime,
+            return new SftpFileAttributes(value.LastAccessTimeUtc,
+                                          value.LastWriteTimeUtc,
                                           value.Size,
                                           value.UserId,
                                           value.GroupId,

src/Renci.SshNet.Tests/Common/SftpFileAttributesBuilder.cs

@@ -64,9 +64,15 @@ public SftpFileAttributesBuilder WithExtension(string name, string value)
         public SftpFileAttributes Build()
         {
             if (_lastAccessTime == null)
-                _lastAccessTime = DateTime.MinValue;
+                _lastAccessTime = DateTime.SpecifyKind(DateTime.MinValue, DateTimeKind.Utc);
+            else if (_lastAccessTime.Value.Kind != DateTimeKind.Utc)
+                _lastAccessTime = _lastAccessTime.Value.ToUniversalTime();
+
             if (_lastWriteTime == null)
-                _lastWriteTime = DateTime.MinValue;
+                _lastWriteTime = DateTime.SpecifyKind(DateTime.MinValue, DateTimeKind.Utc);
+            else if (_lastWriteTime.Value.Kind != DateTimeKind.Utc)
+                _lastWriteTime = _lastWriteTime.Value.ToUniversalTime();
+
             if (_size == null)
                 _size = 0;
             if (_userId == null)

src/Renci.SshNet/Sftp/SftpFile.cs

@@ -99,11 +99,11 @@ public DateTime LastAccessTimeUtc
         {
             get
             {
-                return Attributes.LastAccessTime.ToUniversalTime();
+                return Attributes.LastAccessTimeUtc;
             }
             set
             {
-                Attributes.LastAccessTime = value.ToLocalTime();
+                Attributes.LastAccessTimeUtc = value;
             }
         }
 
@@ -117,11 +117,11 @@ public DateTime LastWriteTimeUtc
         {
             get
             {
-                return Attributes.LastWriteTime.ToUniversalTime();
+                return Attributes.LastWriteTimeUtc;
             }
             set
             {
-                Attributes.LastWriteTime = value.ToLocalTime();
+                Attributes.LastWriteTimeUtc = value;
             }
         }