[6.0] Cover –-toolchain argument in SwiftCommandStateTests

Sources/Basics/CMakeLists.txt

@@ -29,6 +29,7 @@ add_library(Basics
  Errors.swift
  FileSystem/AbsolutePath.swift
  FileSystem/FileSystem+Extensions.swift
+ FileSystem/InMemoryFileSystem.swift
  FileSystem/NativePathExtensions.swift
  FileSystem/RelativePath.swift
  FileSystem/TemporaryFile.swift

Sources/Basics/FileSystem/FileSystem+Extensions.swift

@@ -2,7 +2,7 @@
 //
 // This source file is part of the Swift open source project
 //
-// Copyright (c) 2020-2021 Apple Inc. and the Swift project authors
+// Copyright (c) 2020-2024 Apple Inc. and the Swift project authors
 // Licensed under Apache License v2.0 with Runtime Library Exception
 //
 // See http://swift.org/LICENSE.txt for license information
@@ -632,3 +632,48 @@ extension FileLock {
  return try Self.prepareLock(fileToLock: fileToLock.underlying, at: lockFilesDirectory?.underlying)
  }
 }
+
+/// Convenience initializers for testing purposes.
+extension InMemoryFileSystem {
+ /// Create a new file system with the given files, provided as a map from
+ /// file path to contents.
+ public convenience init(files: [String: ByteString]) {
+ self.init()
+
+ for (path, contents) in files {
+ let path = try! AbsolutePath(validating: path)
+ try! createDirectory(path.parentDirectory, recursive: true)
+ try! writeFileContents(path, bytes: contents)
+ }
+ }
+
+ /// Create a new file system with an empty file at each provided path.
+ public convenience init(emptyFiles files: String...) {
+ self.init(emptyFiles: files)
+ }
+
+ /// Create a new file system with an empty file at each provided path.
+ public convenience init(emptyFiles files: [String]) {
+ self.init()
+ self.createEmptyFiles(at: .root, files: files)
+ }
+}
+
+extension FileSystem {
+ public func createEmptyFiles(at root: AbsolutePath, files: String...) {
+ self.createEmptyFiles(at: root, files: files)
+ }
+
+ public func createEmptyFiles(at root: AbsolutePath, files: [String]) {
+ do {
+ try createDirectory(root, recursive: true)
+ for path in files {
+ let path = try AbsolutePath(validating: String(path.dropFirst()), relativeTo: root)
+ try createDirectory(path.parentDirectory, recursive: true)
+ try writeFileContents(path, bytes: "")
+ }
+ } catch {
+ fatalError("Failed to create empty files: \(error)")
+ }
+ }
+}