Open Radar

 
Making a local network request from a test inside a UI Testing Bundle (using URLSession) fails with the following error:

```
Error Domain=NSURLErrorDomain Code=-1009 "The Internet connection appears to be offline." UserInfo={_kCFStreamErrorCodeKey=50, NSUnderlyingError=0x2824fa670 {Error Domain=kCFErrorDomainCFNetwork Code=-1009 "(null)" UserInfo={_NSURLErrorNWPathKey=unsatisfied (Local network prohibited), interface: en0, ipv4, _kCFStreamErrorCodeKey=50, _kCFStreamErrorDomainKey=1}}, _NSURLErrorFailingURLSessionTaskErrorKey=LocalDataTask <5E125442-C766-46B1-A172-6CF9DA76DC85>.<1>, _NSURLErrorRelatedURLSessionTaskErrorKey=(
"LocalDataTask <5E125442-C766-46B1-A172-6CF9DA76DC85>.<1>
```

The same code works from a Unit Testing Bundle or from the main iOS app target.

Running the unit test for the first time (clean install) triggers the local network privacy prompt, while running the UI test does not trigger the privacy prompt and the request fails with the error above. 

STEPS TO REPRODUCE 
1. Start a local server using `python -m http.server`;
2. From a test inside a UI Testing Bundle, make a call to the local server using URLSession:

```
func testLocalNetworkRequest() throws {
  var localNetworkUrlComponents = URLComponents()
  localNetworkUrlComponents.scheme = "http"
  localNetworkUrlComponents.host = "[YOUR_IP_HERE]"
  localNetworkUrlComponents.port = 8000 // this is the default port, change it if needed

  let localNetworkURL = localNetworkUrlComponents.url!
  let localNetworkRequestExpectation = XCTestExpectation(description: "Local network request.")

  URLSession.shared.dataTask(with: localNetworkURL) { data, response, error in
    if let error = error {
      XCTFail("Failed local network call: \(String(describing: error)).")
    } 

    if let data = data, let html = String(data: data, encoding: .utf8) {
      dump(html)
      XCTAssert(!html.isEmpty)
    }

    localNetworkRequestExpectation.fulfill()
  }.resume()

  wait(for: [localNetworkRequestExpectation], timeout: 100)
}
```