95 lines
1.8 KiB
C++
95 lines
1.8 KiB
C++
#include <mbgl/actor/actor.hpp>
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#include <mbgl/util/default_thread_pool.hpp>
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#include <mbgl/test/util.hpp>
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#include <future>
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using namespace mbgl;
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TEST(ActorRef, CanOutliveActor) {
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// An ActorRef can outlive its actor. Doing does not extend the actor's lifetime.
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// Sending a message to an ActorRef whose actor has died is a no-op.
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struct Test {
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bool& died;
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Test(ActorRef<Test>, bool& died_)
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: died(died_) {
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}
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~Test() {
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died = true;
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}
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void receive() {
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FAIL();
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}
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};
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ThreadPool pool { 1 };
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bool died = false;
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ActorRef<Test> test = [&] () {
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return Actor<Test>(pool, std::ref(died)).self();
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}();
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EXPECT_TRUE(died);
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test.invoke(&Test::receive);
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}
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TEST(ActorRef, Ask) {
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// Ask returns a Future eventually returning the result
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struct Test {
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Test(ActorRef<Test>) {}
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int gimme() {
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return 20;
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}
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int echo(int i) {
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return i;
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}
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};
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ThreadPool pool { 1 };
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Actor<Test> actor(pool);
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ActorRef<Test> ref = actor.self();
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EXPECT_EQ(20, ref.ask(&Test::gimme).get());
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EXPECT_EQ(30, ref.ask(&Test::echo, 30).get());
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}
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TEST(ActorRef, AskOnDestroyedActor) {
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// Tests behavior when calling ask() after the
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// Actor has gone away. Should set a exception_ptr.
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struct Test {
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bool& died;
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Test(ActorRef<Test>, bool& died_) : died(died_) {}
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~Test() {
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died = true;
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}
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int receive() {
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return 1;
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}
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};
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bool died = false;
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ThreadPool pool { 1 };
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auto actor = std::make_unique<Actor<Test>>(pool, died);
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ActorRef<Test> ref = actor->self();
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actor.reset();
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EXPECT_TRUE(died);
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auto result = ref.ask(&Test::receive);
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EXPECT_ANY_THROW(result.get());
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}
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