public async Task MemoizeAsync_ExistingItemReceivedRevokeAndCallAfterRevokeReturnsAnIgnoredResponseAndSettingIsTryFetchNewValueNextTimeOrUseOld_AfterRevokeCacheIsUsedAndCallIsMadeToDataSourceAndIgnored()
{
var firstResult = "first result";
var secondResult = "second result";
var dataSource = CreateRevokableDataSource(new[] { "revokeKey" }, firstResult, null, secondResult);
var revokesSource = new OneTimeSynchronousSourceBlock <string>();
var cache = CreateCache(revokesSource);
var memoizer = CreateMemoizer(cache);
var result = await(Task <Revocable <Thing> >) memoizer.Memoize(dataSource, ThingifyTaskRevokabkle, new object[] { "someString" }, GetCachingSettings());
result.Value.Id.ShouldBe(firstResult);
dataSource.Received(1).ThingifyTaskRevokable("someString"); //New item - fetch from datasource
//Post revoke message
revokesSource.PostMessageSynced("revokeKey");
//We want to test that revoked item is returned (because data source response should be ignored)
result = await(Task <Revocable <Thing> >) memoizer.Memoize(dataSource, ThingifyTaskRevokabkle, new object[] { "someString" },
GetCachingSettings(revokedResponseBehavior: RevokedResponseBehavior.TryFetchNewValueNextTimeOrUseOld,
responseKindsToCache: ResponseKinds.NonNullResponse,
responseKindsToIgnore: ResponseKinds.NullResponse));
result.Value.Id.ShouldBe(firstResult); //we use old cached value
dataSource.Received(2).ThingifyTaskRevokable("someString"); //tried to fetch from data source (and ignored)
//Cached item is still revoked, so we do another call to data source and get a new valid response
result = await(Task <Revocable <Thing> >) memoizer.Memoize(dataSource, ThingifyTaskRevokabkle, new object[] { "someString" },
GetCachingSettings(revokedResponseBehavior: RevokedResponseBehavior.TryFetchNewValueNextTimeOrUseOld));
result.Value.Id.ShouldBe(secondResult); //get new value
dataSource.Received(3).ThingifyTaskRevokable("someString");
}
public async Task MemoizeAsync_ExistingItemReceivedRevokeAndSettingIsTryFetchNewValueInBackgroundNextTime_AfterRevokeCacheIsUsedAndItemIsFetchedFromDataSourceInTheBackround()
{
var firstResult = "first result";
var secondResult = "second result";
var dataSource = CreateRevokableDataSource(new[] { "revokeKey" }, firstResult, secondResult);
var revokesSource = new OneTimeSynchronousSourceBlock <string>();
var cache = CreateCache(revokesSource);
var memoizer = CreateMemoizer(cache);
var result = await(Task <Revocable <Thing> >) memoizer.Memoize(dataSource, ThingifyTaskRevokabkle, new object[] { "someString" }, GetCachingSettings());
result.Value.Id.ShouldBe(firstResult);
dataSource.Received(1).ThingifyTaskRevokable("someString"); //New item - fetch from datasource
//Post revoke message
revokesSource.PostMessageSynced("revokeKey");
//We want to test that revoked item is used and we fetch a new item from data source in the backround
result = await(Task <Revocable <Thing> >) memoizer.Memoize(dataSource, ThingifyTaskRevokabkle, new object[] { "someString" },
GetCachingSettings(revokedResponseBehavior: RevokedResponseBehavior.TryFetchNewValueInBackgroundNextTime));
result.Value.Id.ShouldBe(firstResult); //Use old cached value
dataSource.Received(2).ThingifyTaskRevokable("someString"); //A backround call to the data source is made
//After backround call is done, we should get new result
result = await(Task <Revocable <Thing> >) memoizer.Memoize(dataSource, ThingifyTaskRevokabkle, new object[] { "someString" },
GetCachingSettings(revokedResponseBehavior: RevokedResponseBehavior.TryFetchNewValueInBackgroundNextTime));
result.Value.Id.ShouldBe(secondResult);
dataSource.Received(2).ThingifyTaskRevokable("someString"); //No additional data source call
}
//Bug #134604
public async Task MemoizeAsync_ExistingItemWasRefreshedByTtlAndReciviedRevoke_AfterRevokeCacheIsNotUsedAndItemIsFetchedFromDataSource()
{
var completionSource = new TaskCompletionSource <Revocable <Thing> >();
completionSource.SetResult(new Revocable <Thing> {
Value = new Thing {
Id = "first Value"
}, RevokeKeys = new[] { "revokeKey" }
});
var dataSource = CreateRevokableDataSource(null, completionSource);
var revokesSource = new OneTimeSynchronousSourceBlock <string>();
var cache = CreateCache(revokesSource);
var memoizer = CreateMemoizer(cache);
//To cause refresh in next call
await(Task <Revocable <Thing> >) memoizer.Memoize(dataSource, ThingifyTaskRevokabkle, new object[] { "someString" }, GetCachingSettings(refreshTimeSeconds: 0));
dataSource.Received(1).ThingifyTaskRevokable("someString"); //New item - fetch from datasource
await(Task <Revocable <Thing> >) memoizer.Memoize(dataSource, ThingifyTaskRevokabkle, new object[] { "someString" }, GetCachingSettings());
dataSource.Received(2).ThingifyTaskRevokable("someString"); //Refresh task - fetch from datasource
//Post revoke message
revokesSource.PostMessageSynced("revokeKey");
//We want to test that item was removed from cache after revoke and that new item is fetched from datasource
await(Task <Revocable <Thing> >) memoizer.Memoize(dataSource, ThingifyTaskRevokabkle, new object[] { "someString" }, GetCachingSettings());
dataSource.Received(3).ThingifyTaskRevokable("someString"); //Revoke received and item removed from cache - fetch from datasource
}
public async Task MemoizeAsync_RevokeBeforeRetrivalTaskCompletedCaused_NoIssues()
{
var completionSource = new TaskCompletionSource <Revocable <Thing> >();
var dataSource = CreateRevokableDataSource(null, completionSource);
var revokesSource = new OneTimeSynchronousSourceBlock <string>();
var cache = CreateCache(revokesSource);
var memoizer = CreateMemoizer(cache);
//Call method to get results
var resultTask = (Task <Revocable <Thing> >)memoizer.Memoize(dataSource, ThingifyTaskRevokabkle, new object[] { "someString" }, GetPolicy());
//Post revoke message while results had not arrived
revokesSource.PostMessageSynced("revokeKey");
//Wait before sending results
await Task.Delay(100);
completionSource.SetResult(new Revocable <Thing> {
Value = new Thing {
Id = 5
}, RevokeKeys = new[] { "revokeKey" }
});
//Results should arive now
var actual = await resultTask;
dataSource.Received(1).ThingifyTaskRevokable("someString");
actual.Value.Id.ShouldBe(5);
cache.CacheKeyCount.ShouldBe(1);
}
public async Task MemoizeAsync_RevokableObjectShouldBeCachedAndRevoked()
{
var dataSource = CreateRevokableDataSource(new[] { "revokeKey" }, 5, 6);
var revokesSource = new OneTimeSynchronousSourceBlock <string>();
var cache = CreateCache(revokesSource);
var memoizer = CreateMemoizer(cache);
var actual = await(Task <Revocable <Thing> >) memoizer.Memoize(dataSource, ThingifyTaskRevokabkle, new object[] { "someString" }, GetPolicy());
dataSource.Received(1).ThingifyTaskRevokable("someString");
actual.Value.Id.ShouldBe(5);
//Read value from cache should be still 5
actual = await(Task <Revocable <Thing> >) memoizer.Memoize(dataSource, ThingifyTaskRevokabkle, new object[] { "someString" }, GetPolicy());
dataSource.Received(1).ThingifyTaskRevokable("someString");
actual.Value.Id.ShouldBe(5);
//A single cache key should be stored in index
cache.CacheKeyCount.ShouldBe(1);
//Post revoke message, no cache keys should be stored
revokesSource.PostMessageSynced("revokeKey");
cache.CacheKeyCount.ShouldBe(0);
//Value should change to 6
actual = await(Task <Revocable <Thing> >) memoizer.Memoize(dataSource, ThingifyTaskRevokabkle, new object[] { "someString" }, GetPolicy());
dataSource.Received(2).ThingifyTaskRevokable("someString");
actual.Value.Id.ShouldBe(6);
cache.CacheKeyCount.ShouldBe(1);
//Post revoke message to not existing key value still should be 6
revokesSource.PostMessageSynced("NotExistin-RevokeKey");
actual = await(Task <Revocable <Thing> >) memoizer.Memoize(dataSource, ThingifyTaskRevokabkle, new object[] { "someString" }, GetPolicy());
dataSource.Received(2).ThingifyTaskRevokable("someString");
actual.Value.Id.ShouldBe(6);
cache.CacheKeyCount.ShouldBe(1);
}
public async Task MemoizeAsync_RevokeBeforeRetrivalTaskCompletedCaused_NoIssues()
{
var completionSource = new TaskCompletionSource <Revocable <Thing> >();
var dataSource = CreateRevokableDataSource(null, completionSource);
var revokesSource = new OneTimeSynchronousSourceBlock <string>();
var cache = CreateCache(revokesSource);
var memoizer = CreateMemoizer(cache);
//Call method to get results
var resultTask = (Task <Revocable <Thing> >)memoizer.Memoize(dataSource, ThingifyTaskRevokabkle, new object[] { "someString" }, GetPolicy());
//Post revoke message while results had not arrived
revokesSource.PostMessageSynced("revokeKey");
//Should have a single discarded revoke in meter
GetMetricsData("Revoke").AssertEquals(new MetricsDataEquatable
{
MetersSettings = new MetricsCheckSetting {
CheckValues = true
},
Meters = new List <MetricDataEquatable> {
new MetricDataEquatable {
Name = "Discarded", Unit = Unit.Events, Value = 1
},
}
});
//Wait before sending results
await Task.Delay(100);
completionSource.SetResult(new Revocable <Thing> {
Value = new Thing {
Id = 5
}, RevokeKeys = new[] { "revokeKey" }
});
//Results should arive now
var actual = await resultTask;
dataSource.Received(1).ThingifyTaskRevokable("someString");
actual.Value.Id.ShouldBe(5);
cache.CacheKeyCount.ShouldBe(1);
}
public async Task MemoizeAsync_ExistingItemReceivedRevokeAndSettingIsKeepUsingRevokedResponse_AfterRevokeCacheIsUsedAndNoCallIsMadeToDataSource()
{
var firstResult = "first result";
var dataSource = CreateRevokableDataSource(new [] { "revokeKey" }, firstResult);
var revokesSource = new OneTimeSynchronousSourceBlock <string>();
var cache = CreateCache(revokesSource);
var memoizer = CreateMemoizer(cache);
var result = await(Task <Revocable <Thing> >) memoizer.Memoize(dataSource, ThingifyTaskRevokabkle, new object[] { "someString" }, GetCachingSettings());
result.Value.Id.ShouldBe(firstResult);
dataSource.Received(1).ThingifyTaskRevokable("someString"); //New item - fetch from datasource
//Post revoke message
revokesSource.PostMessageSynced("revokeKey");
//We want to test that revoked item is still in cache and returned
result = await(Task <Revocable <Thing> >) memoizer.Memoize(dataSource, ThingifyTaskRevokabkle, new object[] { "someString" },
GetCachingSettings(revokedResponseBehavior: RevokedResponseBehavior.KeepUsingRevokedResponse));
result.Value.Id.ShouldBe(firstResult);
dataSource.Received(1).ThingifyTaskRevokable("someString"); //Revoke received and item was not removed from cache - do not fetch from datasource
}
public async Task MemoizeAsync_ExistingItemReceivedRevokeAndSettingIsTryFetchNewValueNextTimeOrUseOld_AfterRevokeCacheIsNotUsedAndItemIsFetchedFromDataSource()
{
var firstResult = "first result";
var secondResult = "second result";
var dataSource = CreateRevokableDataSource(new[] { "revokeKey" }, firstResult, secondResult);
var revokesSource = new OneTimeSynchronousSourceBlock <string>();
var cache = CreateCache(revokesSource);
var memoizer = CreateMemoizer(cache);
var result = await(Task <Revocable <Thing> >) memoizer.Memoize(dataSource, ThingifyTaskRevokabkle, new object[] { "someString" }, GetCachingSettings());
result.Value.Id.ShouldBe(firstResult);
dataSource.Received(1).ThingifyTaskRevokable("someString"); //New item - fetch from datasource
//Post revoke message
revokesSource.PostMessageSynced("revokeKey");
//We want to test that revoked item is ignored and we fetch a new item from data source
result = await(Task <Revocable <Thing> >) memoizer.Memoize(dataSource, ThingifyTaskRevokabkle, new object[] { "someString" },
GetCachingSettings(revokedResponseBehavior: RevokedResponseBehavior.TryFetchNewValueNextTimeOrUseOld));
result.Value.Id.ShouldBe(secondResult);
dataSource.Received(2).ThingifyTaskRevokable("someString");
}
public async Task MemoizeAsync_RevokableObjectShouldBeCachedAndRevoked()
{
var dataSource = CreateRevokableDataSource(new[] { "revokeKey" }, 5, 6);
var revokesSource = new OneTimeSynchronousSourceBlock <string>();
var cache = CreateCache(revokesSource);
var memoizer = CreateMemoizer(cache);
var actual = await CallWithMemoize(memoizer, dataSource);
dataSource.Received(1).ThingifyTaskRevokable("someString");
actual.Value.Id.ShouldBe(5);
//Read value from cache should be still 5
actual = await CallWithMemoize(memoizer, dataSource);
dataSource.Received(1).ThingifyTaskRevokable("someString");
actual.Value.Id.ShouldBe(5);
//A single cache key should be stored in index
cache.CacheKeyCount.ShouldBe(1);
//No metric for Revoke
GetMetricsData("Revoke").AssertEquals(new MetricsDataEquatable {
Meters = new List <MetricDataEquatable> ()
});
//Post revoke message, no cache keys should be stored
revokesSource.PostMessageSynced("revokeKey");
cache.CacheKeyCount.ShouldBe(0);
//Should have a single revoke in meter
GetMetricsData("Revoke").AssertEquals(new MetricsDataEquatable
{
MetersSettings = new MetricsCheckSetting {
CheckValues = true
},
Meters = new List <MetricDataEquatable> {
new MetricDataEquatable {
Name = "Succeeded", Unit = Unit.Events, Value = 1
},
}
});
//Should have a single item removed in meter
GetMetricsData("Items").AssertEquals(new MetricsDataEquatable
{
MetersSettings = new MetricsCheckSetting {
CheckValues = true
},
Meters = new List <MetricDataEquatable> {
new MetricDataEquatable {
Name = CacheEntryRemovedReason.Removed.ToString(), Unit = Unit.Items, Value = 1
},
}
});
//Value should change to 6
actual = await CallWithMemoize(memoizer, dataSource);
dataSource.Received(2).ThingifyTaskRevokable("someString");
actual.Value.Id.ShouldBe(6);
cache.CacheKeyCount.ShouldBe(1);
//Post revoke message to not existing key value still should be 6
revokesSource.PostMessageSynced("NotExistin-RevokeKey");
actual = await CallWithMemoize(memoizer, dataSource);
dataSource.Received(2).ThingifyTaskRevokable("someString");
actual.Value.Id.ShouldBe(6);
cache.CacheKeyCount.ShouldBe(1);
}