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Add experimental max parallelization width option for Swift Testing. #9361

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Nov 13, 2025
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Add experimental max parallelization width option for Swift Testing. #9361

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6 changes: 6 additions & 0 deletions Sources/Commands/SwiftTestCommand.swift
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Expand Up @@ -162,6 +162,12 @@ struct TestCommandOptions: ParsableArguments {
help: "Number of tests to execute in parallel.")
var numberOfWorkers: Int?

/// Width of task group used by Swift Testing.
///
/// This argument is consumed by Swift Testing and is passed through verbatim by SwiftPM.
@Option(help: .hidden)
var experimentalMaximumParallelizationWidth: Int? = nil

/// List the tests and exit.
@Flag(name: [.customLong("list-tests"), .customShort("l")],
help: "Lists test methods in specifier format.")
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