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// Copyright 2009 Intel Corporation
// SPDX-License-Identifier: Apache-2.0
#include "../catch.hpp"
#include "rkcommon/utility/Observer.h"
using namespace rkcommon::utility;
SCENARIO("Observable/Observer interfaces", "[Observers]")
{
GIVEN("A single observable and two observers")
{
Observable at;
Observer look1(at);
Observer look2(at);
THEN("Neither observer has been notified after construction")
{
REQUIRE(!look1.wasNotified());
REQUIRE(!look2.wasNotified());
}
WHEN("The observable notifies")
{
at.notifyObservers();
THEN("Both observers independently are notified exactly once")
{
REQUIRE(look1.wasNotified());
REQUIRE(look2.wasNotified());
REQUIRE(!look1.wasNotified());
REQUIRE(!look2.wasNotified());
}
}
}
}
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