public async Task GetOrAdd_WhenExecutesConcurrently_ReturnsTheSameObject()
{
// arrange
var i18nCache = new I18nCache();
// act
var numberOfThreads = 1000;
var tasks = new List <Task <I18nSheet> >(numberOfThreads);
for (var i = 0; i < tasks.Capacity; ++i)
{
tasks.Add(i18nCache.GetOrAdd("temp", async key =>
{
await Task.Delay(500);
return(new I18nSheet("s1", "sh1", new ValueRange()));
}));
}
await Task.WhenAll(tasks);
// assert
var i18nSheets = tasks.Select(t => t.Result).ToList();
var expectedI18nSheets = new List <I18nSheet>(numberOfThreads);
for (var i = 0; i < tasks.Capacity; ++i)
{
expectedI18nSheets.Add(i18nSheets.First());
}
CollectionAssert.AreEquivalent(expectedI18nSheets, i18nSheets);
}
public async Task Clear_WhenHasData_ClearsData()
{
// arrange
var i18nCache = new I18nCache();
var item = await i18nCache.GetOrAdd(
"ch1",
key => Task.FromResult(new I18nSheet("1", "1", new ValueRange()))
);
// act
i18nCache.Clear();
// assert
item = await i18nCache.GetOrAdd(
"ch1",
key => Task.FromResult(new I18nSheet("2", "2", new ValueRange()))
);
Assert.AreEqual("2", item.SpreadsheetId);
}