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TrueZip64 tests take a significant amount of time to run locally and run by default #132446
Description
I occasionally run libs.test subset (or Copilot decides to do it for me) and some of these ZIP64 tests take a significant amount of time to run on a MacBook Neo.
ystem.IO.Compression.ZipFile.Tests: [Long Running Test] 'System.IO.Compression.Tests.ZipFile_EncryptionTests.Encryption_TrueZip64_LargeEntry_RoundTrip', Elapsed: 00:04:08
System.IO.Compression.ZipFile.Tests: [Long Running Test] 'System.IO.Compression.Tests.ZipFile_EncryptionTests.Encryption_TrueZip64_LargeEntry_RoundTrip', Elapsed: 00:06:08
System.IO.Compression.ZipFile.Tests: [Long Running Test] 'System.IO.Compression.Tests.ZipFile_EncryptionTests.Encryption_TrueZip64_LargeEntry_RoundTrip', Elapsed: 00:08:08
System.IO.Compression.ZipFile.Tests: [Long Running Test] 'System.IO.Compression.Tests.ZipFile_EncryptionTests.Encryption_TrueZip64_LargeEntry_RoundTrip', Elapsed: 00:10:08
System.IO.Compression.ZipFile.Tests: [Long Running Test] 'System.IO.Compression.Tests.ZipFile_EncryptionTests.Encryption_TrueZip64_LargeEntry_UpdateMode_Throws', Elapsed: 00:02:04
System.IO.Compression.ZipFile.Tests: [Long Running Test] 'System.IO.Compression.Tests.ZipFile_EncryptionTests.Encryption_TrueZip64_LargeEntry_UpdateMode_Throws', Elapsed: 00:04:04
These tests are already marked SkipCI - perhaps we should consider marking them outer loop. I do not think contributors that want to work in System.IO.Compression want a test suite that takes 15 minutes to complete.
Reacted by Copilot
Activity
dotnet-policy-service commentedon Aug 18, 2026
Tagging subscribers to this area: @karelz, @dotnet/area-system-io-compression
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Mark long-running TrueZip64 tests as outer loop (#132453)