XCTest Crash Demo

This repo intends to centralize XCTest crash errors and the way they can be reproduced in order to help developers to understand them.

1.- Early unexpected exit

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Error message:

XCTestCrash (67172) encountered an error (Early unexpected exit, operation never finished bootstrapping - no restart will be attempted. (Underlying Error: Test crashed with signal trap before starting test execution.

This happens when the App Host crashes, you can reproduce it by uncommenting crash1()or crash2() functions in ViewController.swift and executing ./run.sh

2.- Restarting after unexpected exit

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Error message:

Restarting after unexpected exit, crash, or test timeout in XCTestCrashTests.testExample(); summary will include totals from previous launches.

This happens when a Test Case crashes, you can reproduce it by uncommenting testExample1()or testExample2() in XCTestCrashTests.swift and executing ./run.sh

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Possible approaches/solutions

Of course the best solution is to solve the crash but the error messages doesn't add too much information what caused it.

A solution is to search in the DiagnosticReports directories: $HOME/Library/Logs/DiagnosticReports and /Library/Logs/DiagnosticReports for the last crash report and export it, this is the script we are using to search the latest (up to 30 segs ago).

find $HOME/Library/Logs/DiagnosticReports /Library/Logs/DiagnosticReports \
  -type f -mtime -30s \( -name '*.ips' -o -name '*.crash' \) -print0 | \
  xargs -0 stat -f "%m %N" | \
  sort -rn | \
  head -1 | \
  cut -f2- -d" "