[SR-12232] [SPM] --enable-test-discovery ignores inherited test methods

[swift-ci]

Previous ID	SR-12232
Radar	rdar://problem/59655518
Original Reporter	tannernelson (JIRA User)
Type	Bug

Attachment: Download

Environment

Xcode Version 11.4 beta (11N111s)

Additional Detail from JIRA

Votes	1
Component/s
Labels	Bug
Assignee	None
Priority	Medium

md5: 1a81d491ee635b8aef736c38df2e9633

Issue Description:

The following code runs `testStuff` on macOS in Xcode and via CLI. However, on Linux using --enable-test-discovery, the `testStuff` method is not found resulting in no tests running.

// module A
open class Foo: XCTestCase { }
extension Foo {
    func testStuff() { ... }
}
// module B
import A
final class Bar: Foo { }

Potentially related to https://bugs.swift.org/browse/SR-11951, but I'm not sure.

[hborla]

@swift-ci create

[swift-ci]

Comment by Christopher Prince (JIRA)

The more direct style of inheritance also shows the same result.

import XCTest
// module A
class Foo: XCTestCase {
    func testStuff() {
    }
}
class Bar: Foo {
}

On Linux, only one test case is executed. On MacOS, 2 test cases are executed.

Archive.zipThis archive gives the executable package and both linux and mac os x results.

[friedbunny]

This is fixed in:

• improve IndexStore::listTests to include inherited tests swift-tools-support-core#335
• improve test discovery to include inherited tests swift-package-manager#5637