80 lines
1.6 KiB
C++
80 lines
1.6 KiB
C++
/*
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* \brief Test for 'Registry' data structure
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* \author Norman Feske
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* \date 2018-08-21
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*/
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/*
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* Copyright (C) 2018 Genode Labs GmbH
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*
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* This file is part of the Genode OS framework, which is distributed
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* under the terms of the GNU Affero General Public License version 3.
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*/
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/* Genode includes */
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#include <base/registry.h>
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#include <base/component.h>
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#include <base/log.h>
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/*
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* Check that an exception that occurs during the iteration over
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* registry items does not affect the registry content.
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*/
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static void test_exception_during_for_each()
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{
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using namespace Genode;
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struct Item : Interface
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{
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typedef String<10> Name;
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Name const name;
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Item(Name const &name) : name(name) { }
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class Invalid : Exception { };
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void visit()
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{
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if (name == "second")
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throw Invalid();
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}
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};
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Registry<Registered<Item> > items { };
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Registered<Item> first (items, "first");
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Registered<Item> second(items, "second");
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Registered<Item> third (items, "third");
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auto num_items = [&] () {
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unsigned cnt = 0;
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items.for_each([&] (Item &) { cnt++; });
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return cnt;
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};
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unsigned const num_items_before_exception = num_items();
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try {
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items.for_each([&] (Item &item) {
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/* second item throws an exception */
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item.visit();
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});
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}
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catch (Item::Invalid) { log("exception occurred (expected)"); };
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unsigned const num_items_after_exception = num_items();
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struct Failed : Exception { };
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if (num_items_before_exception != num_items_after_exception)
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throw Failed();
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}
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void Component::construct(Genode::Env &env)
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{
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test_exception_during_for_each();
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env.parent().exit(0);
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}
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