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Adding info to debug WindowsAlternateDataStreamOverwrite failure #109399

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merged 4 commits into from
Nov 4, 2024
Merged

Adding info to debug WindowsAlternateDataStreamOverwrite failure #109399

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67f8bb5
adding logs in tests
PranavSenthilnathan Oct 30, 2024
5cc582b
adding some logs to test
PranavSenthilnathan Oct 31, 2024
c161ac4
remove using
PranavSenthilnathan Oct 31, 2024
5b59ae1
use test output helper
PranavSenthilnathan Oct 31, 2024
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18 changes: 18 additions & 0 deletions src/libraries/System.Runtime/tests/System.IO.FileSystem.Tests/File/Copy.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -236,6 +236,17 @@ public void WindowsAlternateDataStream(string defaultStream, string alternateStr
File.WriteAllText(testFile2DefaultStream, "Bar");
Assert.Throws<IOException>(() => Copy(testFile2DefaultStream, testFileAlternateStream));

try
{
Copy(testFile2DefaultStream, testFileAlternateStream);
Assert.Fail();
}
catch (IOException e)
{
// Error code for "the file exists".
Assert.Equal(-2147024816, e.HResult);
}

// This always throws as you can't copy an alternate stream out (oddly)
Assert.Throws<IOException>(() => Copy(testFileAlternateStream, testFile2));
Assert.Throws<IOException>(() => Copy(testFileAlternateStream, testFile2 + alternateStream));
Expand Down Expand Up @@ -352,6 +363,8 @@ public void WindowsAlternateDataStreamOverwrite(string defaultStream, string alt

// Copy the default stream into an alternate stream
File.WriteAllText(testFileDefaultStream, "Foo");
Assert.Equal("Foo", File.ReadAllText(testFileDefaultStream));
Console.WriteLine($"Copying default stream into alternate stream.");
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Copy(testFileDefaultStream, testFileAlternateStream);
Assert.Equal(testFile, testDirectory.GetFiles().Single().FullName);
Assert.Equal("Foo", File.ReadAllText(testFileDefaultStream));
Expand All @@ -361,6 +374,11 @@ public void WindowsAlternateDataStreamOverwrite(string defaultStream, string alt
string testFile2 = Path.Combine(testDirectory.FullName, GetTestFileName());
string testFile2DefaultStream = testFile2 + defaultStream;
File.WriteAllText(testFile2DefaultStream, "Bar");
Assert.Equal("Bar", File.ReadAllText(testFile2DefaultStream));
Assert.Equal("Foo", File.ReadAllText(testFileAlternateStream));
Console.WriteLine($"Attributes for {testFile2DefaultStream}:{File.GetAttributes(testFile2DefaultStream)}");
Console.WriteLine($"Attributes for {testFileAlternateStream}:{File.GetAttributes(testFileAlternateStream)}");
Console.WriteLine($"Overwriting alternate stream.");
Copy(testFile2DefaultStream, testFileAlternateStream, overwrite: true);
Assert.Equal("Foo", File.ReadAllText(testFileDefaultStream));
Assert.Equal("Bar", File.ReadAllText(testFileAlternateStream));
Expand Down
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