public async void GetLatestVersionAsync_ShouldNotGetFromProviderMoreThanOnce()
{
const string owner = "test-owner";
const string repository = "test-repository";
const string expected = "test-version";
var versionProviderMock = Mock.Create <IDbCacheVersionProvider>();
Mock.Arrange(() => versionProviderMock.GetLatestVersionAsync(owner, repository))
.Returns(Task.FromResult(expected))
.OccursOnce();
var semaphoreMock = Mock.Create <ISemaphoreSlimProxy>();
Mock.Arrange(() => semaphoreMock.WaitAsync()).Returns(Task.CompletedTask).OccursOnce();
Mock.Arrange(() => semaphoreMock.Release()).Returns(1 /* any int */).OccursOnce();
var cache = new MemoryCacheVersionProvider(versionProviderMock, semaphoreMock, Mock.Create <IStreamer>());
string actual = await cache.GetLatestVersionAsync(owner, repository);
Assert.Equal(expected, actual);
// Check that second call will get value from cache
actual = await cache.GetLatestVersionAsync(owner, repository);
Assert.Equal(expected, actual);
Mock.Assert(versionProviderMock);
Mock.Assert(semaphoreMock);
}
public async void GetLatestVersionAsync_ShouldNotGetFromProviderAsynchronously()
{
const string owner = "test-owner";
const string repository = "test-repository";
const string expected = "test-version";
var versionProviderMock = Mock.Create <IDbCacheVersionProvider>();
Mock.Arrange(() => versionProviderMock.GetLatestVersionAsync(owner, repository))
.Returns(Task.Run(async() =>
{
await Task.Delay(TimeSpan.FromMilliseconds(300));
return(expected);
}))
.OccursOnce();
var cache = new MemoryCacheVersionProvider(
versionProviderMock, new SemaphoreSlimProxy(), Mock.Create <IStreamer>());
async void Run() => Assert.Equal(expected, await cache.GetLatestVersionAsync(owner, repository));
await Task.Run(Run);
await Task.Run(Run);
Mock.Assert(versionProviderMock);
}
public async void GetLatestVersionAsync_ValidCachedVersion()
{
const string owner = "test-owner";
const string repository = "test-repository";
const string expected = "test-version";
var versionProviderMock = Mock.Create <IDbCacheVersionProvider>();
Mock.Arrange(() => versionProviderMock
.GetLatestVersionAsync(Arg.AnyString, Arg.AnyString))
.OccursNever();
var semaphoreMock = Mock.Create <ISemaphoreSlimProxy>();
Mock.Arrange(() => semaphoreMock.WaitAsync()).OccursNever();
Mock.Arrange(() => semaphoreMock.Release()).OccursNever();
var cache = new MemoryCacheVersionProvider(versionProviderMock, semaphoreMock, Mock.Create <IStreamer>());
cache.LocalCache.Add($"{owner}/{repository}", Task.FromResult(expected));
string actual = await cache.GetLatestVersionAsync(owner, repository);
Assert.Equal(expected, actual);
Mock.Assert(versionProviderMock);
Mock.Assert(semaphoreMock);
}
