public async Task Load_WhenTogglesOrEtagFileDoesNotExists_ReturnsEmptyResult(
bool toggleFileExists,
bool etagFileExists,
[Frozen] UnleashSettings settings,
[Frozen] Mock <IFileSystem> fileSystem,
FileSystemToggleCollectionCache cache
)
{
var etagFilePath = settings.GetFeatureToggleETagFilePath();
var toggleFilePath = settings.GetFeatureToggleFilePath();
fileSystem.Setup(fs => fs.FileExists(etagFilePath)).Returns(etagFileExists);
if (etagFileExists)
{
fileSystem.Setup(fs => fs.FileExists(toggleFilePath)).Returns(toggleFileExists);
}
var result = await cache.Load(CancellationToken.None);
Assert.Equal(string.Empty, result.InitialETag);
Assert.Null(result.InitialToggleCollection);
fileSystem.VerifyAll();
}
public async Task Load_WhenValidToggleAndEtagFilesExist_ReturnsExpectedResult(
[Frozen] UnleashSettings settings,
[Frozen] Mock <IFileSystem> fileSystem,
[Frozen] Mock <IJsonSerializer> jsonSerializer,
FileSystemToggleCollectionCache cache,
ToggleCollection toggleCollection,
string etag
)
{
var toggleFilePath = settings.GetFeatureToggleFilePath();
var etagFilePath = settings.GetFeatureToggleETagFilePath();
fileSystem.Setup(fs => fs.FileExists(toggleFilePath)).Returns(true);
fileSystem.Setup(fs => fs.FileExists(etagFilePath)).Returns(true);
var ms = new MemoryStream();
fileSystem.Setup(fs => fs.FileOpenRead(toggleFilePath)).Returns(ms);
fileSystem.Setup(fs => fs.ReadAllText(etagFilePath)).Returns(etag);
jsonSerializer.Setup(js => js.Deserialize <ToggleCollection>(ms)).Returns(toggleCollection);
var result = await cache.Load(CancellationToken.None);
Assert.Equal(etag, result.InitialETag);
Assert.Same(toggleCollection, result.InitialToggleCollection);
fileSystem.VerifyAll();
jsonSerializer.VerifyAll();
}
public async Task Load_WhenCancellationTokenIsCanceled_ThrowsOperationCancelledException(
FileSystemToggleCollectionCache cache
)
{
var cts = new CancellationTokenSource();
cts.Cancel();
await Assert.ThrowsAsync <OperationCanceledException>(() => cache.Load(cts.Token));
}