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Sam Brannen
66250b1f8e
Prior to this commit, if a custom TestExecutionListener was registered via @TestExecutionListeners the defaults would not be registered. Thus, if a user wanted to declare a custom listener and use the default listeners, the user was forced to manually declare all default listeners in addition to any custom listeners. This unfortunately required that the user know exactly which listeners were registered by default. Moreover, the set of default listeners can change from release to release, and with the support for automatic discovery of default listeners introduced in SPR-11466 it is no longer even possible to know what the set of default TestExecutionListeners is before runtime. This commit addresses this issue by introducing a mechanism for merging custom declared listeners with the defaults for the current environment. Specifically, @TestExecutionListeners supports a new MergeMode that is used to control whether or not explicitly declared listeners are merged with the default listeners when @TestExecutionListeners is declared on a class that does not inherit listeners from a superclass. Issue: SPR-8854