morph::time::ScopedNowOverride Class Reference

RAII helper that fixes DateTime::now() to a constant instant (or a custom callable) for its lifetime and restores the previous override on destruction. More...

#include <datetime.hpp>

Public Member Functions
	ScopedNowOverride (DateTime fixedInstant)
	Installs a clock that always returns fixedInstant.
	ScopedNowOverride (std::function< DateTime()> clock)
	Installs an arbitrary clock callable, saving whatever override was there before.
	~ScopedNowOverride ()
	Restores the saved override (or "no override", if none was installed before).
	ScopedNowOverride (const ScopedNowOverride &)=delete
ScopedNowOverride &	operator= (const ScopedNowOverride &)=delete
	ScopedNowOverride (ScopedNowOverride &&)=delete
ScopedNowOverride &	operator= (ScopedNowOverride &&)=delete

Detailed Description

RAII helper that fixes DateTime::now() to a constant instant (or a custom callable) for its lifetime and restores the previous override on destruction.

Mirrors morph::journal::ScopedActionLog and morph::log::ScopedLoggerOverride — the same scoped-install-then-restore pattern used for the codebase's other process-wide override seams, so one test's fixed "now" never leaks into the next.

{
    morph::time::ScopedNowOverride guard{someFixedInstant};
    // ... DateTime::now()/Timestamp::now(), anywhere, return someFixedInstant ...
}  // previous override (or real wall-clock time) restored here

Definition at line 340 of file datetime.hpp.

Constructor & Destructor Documentation

ScopedNowOverride() [1/2]

morph::time::ScopedNowOverride::ScopedNowOverride ( DateTime fixedInstant )

inlineexplicit

Installs a clock that always returns fixedInstant.

Parameters

fixedInstant

The constant instant DateTime::now() should report for this scope.

Definition at line 344 of file datetime.hpp.

ScopedNowOverride() [2/2]

morph::time::ScopedNowOverride::ScopedNowOverride ( std::function< DateTime()> clock )

inlineexplicit

Installs an arbitrary clock callable, saving whatever override was there before.

Warning

See setNowOverride's warning: clock must not throw and must not call DateTime::now()/Timestamp::now() or install another override.

Parameters

clock

Callable returning the instant DateTime::now() should report for this scope.

Definition at line 351 of file datetime.hpp.

~ScopedNowOverride()

morph::time::ScopedNowOverride::~ScopedNowOverride ( )

inline

Restores the saved override (or "no override", if none was installed before).

Definition at line 359 of file datetime.hpp.

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The documentation for this class was generated from the following file:

• morph/util/datetime.hpp