Use CreateProcessW directly when starting WinAppDriver to avoid CI hangs

Foundation.Process uses CreateProcessW with bInheritHandles = true, which has the side effect of making swift test wait until both the test process AND WinAppDriver.exe exit before returning. If the test process crashes, this is problematic because WinAppDriver.exe will run amok with no one to terminate it, so swift test will wait forever.

Illustrating the issue: run swift test on this and see it never return until closing msinfo32.exe.

import Foundation
import XCTest

class Tests: XCTestCase {
    func testFoo() throws {
        let process = Process()
        process.executableURL = URL(fileURLWithPath: #"C:\windows\system32\msinfo32.exe"#)
        try process.run()
    }
}

thebrowsercompany / swift-webdriver

Use CreateProcessW directly when starting WinAppDriver to avoid CI hangs #48