A considerable portion of javadoc tests assume the locale of the system under test. Such a test typically compares the output with that of expected on an English locale.

A test must not assume the locale of the system under test. Otherwise, such a test might fail if the system under test has a different locale that the test assumes.

To defend against such failures, a test could combine either of these strategies:

 * Report if the actual locale differs from the assumed one (e.g. throw SkippedException)
 * Contain only locale-agnostic assertions (i.e. either both the expected and actual output are generated for the assumed locale or both are guaranteed to not change with a locale)
 * Enforce the assumed locale by configuring the system under test