fix test utils references

Author: piksel

test/ICSharpCode.SharpZipLib.Tests/TestSupport/Utils.cs

@@ -145,7 +145,7 @@ public TestTraceListener(TextWriter writer)
 
 		public override void WriteLine(string message) => _writer.WriteLine(message);
 		public override void Write(string message) => _writer.Write(message);
-  }
+	}
 
 	public class TempFile : FileSystemInfo, IDisposable
 	{
@@ -167,6 +167,8 @@ public override void Delete()
 			_fileInfo.Delete();
 	    }
 
+		public FileStream Open(FileMode mode, FileAccess access) => _fileInfo.Open(mode, access);
+		public FileStream Open(FileMode mode) => _fileInfo.Open(mode);
 		public FileStream Create() => _fileInfo.Create();
 
 	    public static TempFile WithDummyData(int size, string dirPath = null, string filename = null, int seed = Utils.DefaultSeed)

test/ICSharpCode.SharpZipLib.Tests/Zip/StreamHandling.cs

@@ -554,11 +554,9 @@ public void ShouldThrowDescriptiveExceptionOnUncompressedDescriptorEntry()
 		[Category("Zip")]
 		public void IteratingOverEntriesInDirectUpdatedArchive([Values(0x0, 0x80)] byte padding)
 		{
-			using (var tempFile = new Utils.TempFile())
+			using (var tempFile = new TempFile())
 			{
-				var fi = new FileInfo(tempFile.Filename);
-				
-				using (var zf = ZipFile.Create(tempFile.Filename))
+				using (var zf = ZipFile.Create(tempFile))
 				{
 					zf.BeginUpdate();
 					// Add a "large" file, where the bottom 1023 bytes will become padding
@@ -570,10 +568,10 @@ public void IteratingOverEntriesInDirectUpdatedArchive([Values(0x0, 0x80)] byte
 				}
 
 				// Since ZipFile doesn't support UpdateCommand.Modify yet we'll have to simulate it by patching the header
-				Utils.PatchFirstEntrySize(fi.Open(FileMode.Open), 1);
+				Utils.PatchFirstEntrySize(tempFile.Open(FileMode.Open), 1);
 
 				// Iterate updated entries
-				using (var fs = File.OpenRead(tempFile.Filename))
+				using (var fs = File.OpenRead(tempFile))
 				using (var zis = new ZipInputStream(fs))
 				{
 					var firstEntry = zis.GetNextEntry();