public async Task CallsFactoryWhenNotYetCached()
{
var factoryCallCount = 0;
Task <int> factory(string s) => Task.FromResult(factoryCallCount++);
var cache = new AsyncAgedCache <string, int>(factory);
Assert.Equal(0, factoryCallCount);
await cache.GetOrAddAsync("abc", TimeSpan.FromSeconds(30));
Assert.Equal(1, factoryCallCount);
}
public async Task DoesNotCallFactoryWithWrongKey()
{
var dictionary = new Dictionary <string, int>();
dictionary["a"] = 0;
dictionary["b"] = 0;
Task <int> factoryA(string s) => Task.FromResult(dictionary[s]++);
var cache = new AsyncAgedCache <string, int>(factoryA);
await cache.GetOrAddAsync("a", TimeSpan.FromSeconds(30));
Assert.Equal(1, dictionary["a"]);
Assert.Equal(0, dictionary["b"]);
await cache.GetOrAddAsync("b", TimeSpan.FromSeconds(30));
Assert.Equal(1, dictionary["b"]);
}
