Test target X encountered an error (Early unexpected exit, operation never finished bootstrapping - no restart will be attempted

Solution 1:

I have my notes and demo applications for both Cocoapods and Carthage here https://github.com/onmyway133/TestTarget

Make sure all frameworks are linked to the Test targets
Configure Runpath Search Paths to point to $(FRAMEWORK_SEARCH_PATHS)

More info

Run-Path Dependent Libraries

Solution 2:

I'm using carthage and problem for me was searching for dependencies in a test target. Fix:

Add $(PROJECT_DIR)/Carthage/Build/iOS to Runpath Search Paths

You can find reference here: Carthage issue

Solution 3:

There might another solution, if you are using CocoaPods and the UI test target is embedded inside the app target, which is, unfortunately, the case in the default template (pod init).

Try move the UI test target out of the app target as follows:

from:

platform :ios, '11.0'
use_frameworks!

target 'MyApp' do
  # Pods for MyApp

  target 'MyAppUITests' do
    inherit! :search_paths
    # Pods for testing

  end
end

to:

platform :ios, '11.0'
use_frameworks!

# Pods shared between MyApp and MyAppUITests    

target 'MyApp' do
    # Pods for MyApp only

end

target 'MyAppUITests' do
    # Pods for testing

end

Credit goes to SpacyRicochet in this issue thread: https://github.com/CocoaPods/CocoaPods/issues/4752#issuecomment-305101269

Solution 4:

My solution was to add a "Copy File phase" to my test target. There I set destination to Frameworks and added my framework with the + sign.

Solution 5:

In my case there was nothing wrong with linked files. The Simulator was kind of stuck at the message that the app triggered, like: "App name would like to send you notifications". Pressed OK and the next time my XCTests worked fine.