Sharing code across test targets when using the Swift Package Manager - swift

Question

I have some code that I need to share across test targets, while I'm using the Swift Package Manager. To do this, I have a .testTarget that I also name as a dependency in another .testTarget.
Here is a simple example:
// swift-tools-version:5.3
// The swift-tools-version declares the minimum version of Swift required to build this package.
import PackageDescription
let package = Package(
name: "ExampleLib",
products: [
// Products define the executables and libraries a package produces, and make them visible to other packages.
.library(
name: "ExampleLib",
targets: ["ExampleLib"]),
],
dependencies: [
// Dependencies declare other packages that this package depends on.
// .package(url: /* package url */, from: "1.0.0"),
],
targets: [
// Targets are the basic building blocks of a package. A target can define a module or a test suite.
// Targets can depend on other targets in this package, and on products in packages this package depends on.
.target(
name: "ExampleLib",
dependencies: []),
.testTarget(
name: "Common",
dependencies: ["ExampleLib"]),
.testTarget(
name: "ExampleLibTests",
dependencies: ["Common"]),
]
)
If I try to build this package in Xcode, I get the following error:
Unable to resolve build file: XCBCore.BuildFile (The workspace has a reference to a missing target with GUID 'PACKAGE-TARGET:Common')
However, if I build from the command line (swift build) or test from the command line (swift test), I get success.
I'm using Xcode 12 beta 6, but have also tried Xcode 11.5 (with a change to the Package.swift header) and get the same results.
Here is the complete Swift package example:
https://www.dropbox.com/s/h6ypvbfonnb2zyk/ExampleLib.zip?dl=0
I really would like to use this in Xcode to build for iOS. Thoughts?

Answer 1

I faced the same issue and solved it by defining a Target (not Test Target) instead for Common.
My Package.swift file:
// ...
.target(name: "Common", dependencies: ["App"], path: "Tests/Common"),
.testTarget(name: "AppTests", dependencies: ["App", "Common"]),
.testTarget(name: "IntegrationTests", dependencies: ["App", "Common"])
// ...