Module org.junit.platform.commons
Package org.junit.platform.commons.util

Class ExceptionUtils

java.lang.Object
org.junit.platform.commons.util.ExceptionUtils
@API(status=INTERNAL, since="1.0") public final class ExceptionUtils extends Object
Collection of utilities for working with exceptions.

DISCLAIMER

These utilities are intended solely for usage within the JUnit framework itself. Any usage by external parties is not supported. Use at your own risk!

Since:
1.0

  • Method Details

    • throwAsUncheckedException

      public static RuntimeException throwAsUncheckedException(Throwable t)
      Throw the supplied Throwable, masked as an unchecked exception.

      The supplied Throwable will not be wrapped. Rather, it will be thrown as is using an exploit of the Java language that relies on a combination of generics and type erasure to trick the Java compiler into believing that the thrown exception is an unchecked exception even if it is a checked exception.

      Warning

      This method should be used sparingly.

      Parameters:
      t - the Throwable to throw as an unchecked exception; never null
      Returns:
      this method always throws an exception and therefore never returns anything; the return type is merely present to allow this method to be supplied as the operand in a throw statement

    • readStackTrace

      public static String readStackTrace(Throwable throwable)
      Read the stacktrace of the supplied Throwable into a String.

    • pruneStackTrace

      @API(status=INTERNAL, since="5.10") public static void pruneStackTrace(Throwable throwable, Predicate<String> stackTraceElementFilter)
      Prune the stack trace of the supplied Throwable by filtering its elements using the supplied Predicate, except for org.junit.jupiter.api.Assertions and org.junit.jupiter.api.Assumptions that will always remain present.

      Additionally, all elements prior to and including the first JUnit Launcher call will be removed.

      Parameters:
      throwable - the Throwable whose stack trace should be pruned; never null
      stackTraceElementFilter - the Predicate used to filter elements of the stack trace; never null
      Since:
      5.10

    • findNestedThrowables

      @API(status=INTERNAL, since="5.10") public static List<Throwable> findNestedThrowables(Throwable rootThrowable)
      Find all causes and suppressed exceptions in the backtrace of the supplied Throwable.
      Parameters:
      rootThrowable - the Throwable to explore; never null
      Returns:
      an immutable list of all throwables found, including the supplied one; never null
      Since:
      5.10