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[SR-14766] Basic Async Test Case Fails #345

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swift-ci opened this issue Jun 12, 2021 · 3 comments
Closed

[SR-14766] Basic Async Test Case Fails #345

swift-ci opened this issue Jun 12, 2021 · 3 comments
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bug XCTest

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@swift-ci
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Previous ID SR-14766
Radar rdar://problem/79227241
Original Reporter rnantes (JIRA User)
Type Bug
Status Resolved
Resolution Cannot Reproduce

Attachment: Download

Environment

Xcode 13 Beta 1. MacOS 11.4. Late 2016 Macbook pro.

Additional Detail from JIRA
Votes 0
Component/s XCTest
Labels Bug
Assignee rnantes (JIRA)
Priority Medium

md5: 1ea5a71dd5ad3313febb25ba67e6aa61

Issue Description:

A basic Async test case fails in Xcode 13 beta 1. See code on github

final class ConcurrencyCrashTests: XCTestCase {


    // this crashes
    func testSimpleConcurrency() async throws {
        let res = await aConcurrentFunc()
        XCTAssertEqual(res, "hi")
    }


    func aConcurrentFunc() async -> String {
        return "hi"
    }
}
@ktoso
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ktoso commented Jun 12, 2021

@swift-ci create

@stmontgomery
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Are you running this test on macOS 11.4? See this note from the Xcode 13 Beta Release Notes:

  • Swift test methods with the async keyword may crash when run in macOS 11, iOS 14, tvOS 14, or watchOS 7 or earlier. (76552035)

Workaround: Run the tests in macOS 12, iOS 15, tvOS 15, or watchOS 8 or later. Alternatively, raise the deployment target of test bundle targets containing async Swift tests to these versions.

@stmontgomery
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Marking as Cannot Reproduce since I am not seeing this when running on iOS 15 Beta, but see my earlier comment about how this is not supported on older Apple OSes

@swift-ci swift-ci transferred this issue from apple/swift-issues Apr 25, 2022
@shahmishal shahmishal transferred this issue from apple/swift May 9, 2022
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@stmontgomery @ktoso @swift-ci