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Unblock new dependency of XCTest on Swift Testing for Windows #2760

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Merged
hamishknight merged 1 commit into from
Sep 9, 2026
+18 −1
Merged

Unblock new dependency of XCTest on Swift Testing for Windows #2760

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19 changes: 18 additions & 1 deletion Sources/SKTestSupport/IndexedSingleSwiftFileTestProject.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -114,7 +114,7 @@ package struct IndexedSingleSwiftFileTestProject {
if let sdk = defaultSDKPath {
compilerArguments += ["-sdk", sdk]

// The following are needed so we can import XCTest
// The following are needed so we can import XCTest and Swift Testing.
let sdkUrl = URL(fileURLWithPath: sdk)
#if os(Windows)
let platform = sdkUrl.deletingLastPathComponent().deletingLastPathComponent().deletingLastPathComponent()
Expand All @@ -131,6 +131,23 @@ package struct IndexedSingleSwiftFileTestProject {
"windows"
)
compilerArguments += ["-I", try xctestModuleDir.filePath]

// Test files that only import XCTest still depend on Swift Testing for
// interoperability support.
if let swiftTestingVersion = info.defaults.swiftTestingVersion {
let swiftTestingModuleDir =
platform
.appending(
components: "Developer",
"Library",
"Testing-\(swiftTestingVersion)",
"usr",
"lib",
"swift",
"windows"
)
compilerArguments += ["-I", try swiftTestingModuleDir.filePath]
}
#else
let usrLibDir =
sdkUrl
Expand Down