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OpenWrite doesn't prevent writing #1156
Description
Activity
@Benjamin-Berry :
Could you please provide a complete repro example as it is unclear from your description whatentryandfileshould be or what settings you applied.I can't give you any proprietary code.
var fs = new MockFileSystem();
var directory = fs.DirectoryInfo.New("somepath");
foreach (var file in directory.GetFiles(".", SearchOption.AllDirectories))
{
using var estream = new MemoryStream();
using var fstream = file.OpenWrite();
var temp = fstream.CanRead; // false
await fstream.CopyToAsync(estream);
}This is addressed in release v21.1.2.
Describe the bug
Stream.CopyTpAsync still works with a write only stream.
To Reproduce
var fs = new MockFileSystem();
...
using var estream = entry.Open();
using var fstream = file.OpenWrite();
var temp = fstream.CanRead; // false
await fstream.CopyToAsync(estream);
Expected behavior
MockFileSystem and FileSystem would behave the same.
Additional context
I'm writing into a ZipArchive but that shouldn't matter.
Swapping to use FileSystem in the Unit test does throw a permissions exception.