TEST(ViaFunc, isSticky) {
ManualExecutor x;
int count = 0;
auto f = via(&x, [&]{ count++; });
x.run();
f.then([&]{ count++; });
EXPECT_EQ(1, count);
x.run();
EXPECT_EQ(2, count);
}
TEST(ManualExecutor, runIsStable) {
ManualExecutor x;
size_t count = 0;
auto f1 = [&]() { count++; };
auto f2 = [&]() { x.add(f1); x.add(f1); };
x.add(f2);
x.run();
}
TEST(ViaFunc, liftsVoid) {
ManualExecutor x;
int count = 0;
Future<Unit> f = via(&x, [&]{ count++; });
EXPECT_EQ(0, count);
x.run();
EXPECT_EQ(1, count);
}
TEST(Via, then2Variadic) {
struct Foo { bool a = false; void foo(Try<Unit>) { a = true; } };
Foo f;
ManualExecutor x;
makeFuture().then(&x, &Foo::foo, &f);
EXPECT_FALSE(f.a);
x.run();
EXPECT_TRUE(f.a);
}
TEST(ManualExecutor, scheduleDur) {
ManualExecutor x;
size_t count = 0;
std::chrono::milliseconds dur {10};
x.schedule([&]{ count++; }, dur);
EXPECT_EQ(count, 0);
x.run();
EXPECT_EQ(count, 0);
x.advance(dur/2);
EXPECT_EQ(count, 0);
x.advance(dur/2);
EXPECT_EQ(count, 1);
}
TEST(Via, viaRaces) {
ManualExecutor x;
Promise<Unit> p;
auto tid = std::this_thread::get_id();
bool done = false;
std::thread t1([&] {
p.getFuture()
.via(&x)
.then([&](Try<Unit>&&) { EXPECT_EQ(tid, std::this_thread::get_id()); })
.then([&](Try<Unit>&&) { EXPECT_EQ(tid, std::this_thread::get_id()); })
.then([&](Try<Unit>&&) { done = true; });
});
std::thread t2([&] {
p.setValue();
});
while (!done) x.run();
t1.join();
t2.join();
}
