[#BloombergLP-bsls-FuzzTestHandlerGuard]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bsls.adoc[bsls]::FuzzTestHandlerGuard
:relfileprefix: ../../
:mrdocs:

This class provides a guard that will install and uninstall four handlers, one for assertion failure, one for review failure, one for `BSLS_PRECONDITIONS_BEGIN`, and one for `BSLS_PRECONDITIONS_END`, within its protected scope.

== Synopsis

Declared in `<bsls_fuzztest.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
class FuzzTestHandlerGuard;
----

== Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bsls/FuzzTestHandlerGuard/2constructor.adoc[`FuzzTestHandlerGuard`]         [.small]#[constructor]#
| Create a guard object, installing `FuzzTestPreconditionTracker::handleAssertViolation`, `FuzzTestPreconditionTracker::handleReviewViolation`, and the `BEGIN/END` handler. The behavior is undefined if the current assertion handler is `FuzzTestPreconditionTracker::handleAssertViolation` or the current review handler is `FuzzTestPreconditionTracker::handleAssertViolation`.
| xref:BloombergLP/bsls/FuzzTestHandlerGuard/2destructor.adoc[`~FuzzTestHandlerGuard`] [.small]#[destructor]#
| Restore the failure handler that was in place when this object was created, reset the precondition `BEGIN/END` handlers to no‐op, and destroy this guard. The behavior is undefined unless the current assertion handler is `FuzzTestPreconditionTracker::handleAssertViolation` and the current review handler is `FuzzTestPreconditionTracker::handleAssertViolation`.
| xref:BloombergLP/bsls/FuzzTestHandlerGuard/getOriginalAssertionHandler.adoc[`getOriginalAssertionHandler`] 
| Return the original assertion handler.
| xref:BloombergLP/bsls/FuzzTestHandlerGuard/getOriginalReviewHandler.adoc[`getOriginalReviewHandler`] 
| Return the original review handler.
|===


== Static Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bsls/FuzzTestHandlerGuard/instance.adoc[`instance`] 
| Return the current fuzz test handler guard. The behavior is undefined unless a fuzz test handler guard is currently in scope.
|===



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