AdditionalFailureInfo

@UnstableApi
public final class AdditionalFailureInfo implements TestRule

A JUnit Rule that attaches additional info to any errors/exceptions thrown by the test.

This is useful for tests where the line-number from a stacktrace doesn't provide enough detail about the failure, for example when an assertion fails inside a loop.

This can be preferable to many calls to assertWithMessage because it will also add info to errors/exceptions that bubble out from the system-under-test.

Includes special handling for AssertionError to ensure that test failures are correctly distinguished from test errors (all other errors/exceptions).

Summary

public AdditionalFailureInfo()

public Statement apply(Statement base, Description description)

public void setInfo(@Nullable String info)