public async Task ReadEntry_EntryExistsInSecondCache_ReturnsEntry()
{
const string cacheKey = "test-cache-key";
const string value = "test-value";
DateTime absoluteExpiration = new DateTime(year: 2018, month: 3, day: 17, hour: 8, minute: 0, second: 0);
CacheEntry <string> cacheEntry = new CacheEntry <string>(value, absoluteExpiration);
// This mock uses loose behavior because this test is not asserting that the entry is written to the missed cache.
Mock <ICache> sourceCache1Mock = new Mock <ICache>(MockBehavior.Loose);
sourceCache1Mock
.Setup(cache => cache.ReadEntry <string>(cacheKey))
.ReturnsAsync(null as CacheEntry <string>);
Mock <ICache> sourceCache2Mock = new Mock <ICache>(MockBehavior.Strict);
sourceCache2Mock
.Setup(cache => cache.ReadEntry <string>(cacheKey))
.ReturnsAsync(cacheEntry);
CompositeCache compositeCache = new CompositeCache(new ICache[] { sourceCache1Mock.Object, sourceCache2Mock.Object });
Assert.Equal(
actual: await compositeCache.ReadEntry <string>(cacheKey),
expected: cacheEntry);
}
public async Task ReadEntry_EntryExistsInSecondCache_EntryIsWrittenToTheFirstCache()
{
const string cacheKey = "test-cache-key";
const string value = "test-value";
DateTime absoluteExpiration = new DateTime(year: 2018, month: 3, day: 17, hour: 8, minute: 0, second: 0);
CacheEntry <string> cacheEntry = new CacheEntry <string>(value, absoluteExpiration);
Mock <ICache> sourceCache1Mock = new Mock <ICache>(MockBehavior.Strict);
sourceCache1Mock
.Setup(cache => cache.ReadEntry <string>(cacheKey))
.ReturnsAsync(null as CacheEntry <string>);
sourceCache1Mock
.Setup(cache => cache.WriteEntry(cacheKey, cacheEntry))
.Returns(Task.CompletedTask)
.Verifiable();
Mock <ICache> sourceCache2Mock = new Mock <ICache>(MockBehavior.Strict);
sourceCache2Mock
.Setup(cache => cache.ReadEntry <string>(cacheKey))
.ReturnsAsync(cacheEntry);
CompositeCache compositeCache = new CompositeCache(new ICache[] { sourceCache1Mock.Object, sourceCache2Mock.Object });
await compositeCache.ReadEntry <string>(cacheKey);
sourceCache1Mock.Verify();
}
public async Task ReadEntry_EntryDoesNotExist_ReturnsNull()
{
const string cacheKey = "test-cache-key";
Mock <ICache> sourceCache1Mock = new Mock <ICache>(MockBehavior.Strict);
sourceCache1Mock
.Setup(cache => cache.ReadEntry <string>(cacheKey))
.ReturnsAsync(null as CacheEntry <string>);
Mock <ICache> sourceCache2Mock = new Mock <ICache>(MockBehavior.Strict);
sourceCache2Mock
.Setup(cache => cache.ReadEntry <string>(cacheKey))
.ReturnsAsync(null as CacheEntry <string>);
CompositeCache compositeCache = new CompositeCache(new ICache[] { sourceCache1Mock.Object, sourceCache2Mock.Object });
Assert.Null(await compositeCache.ReadEntry <string>(cacheKey));
}
public async Task ReadEntry_EntryExistsInFirstCache_ReturnsEntry()
{
const string cacheKey = "test-cache-key";
const string value = "test-value";
DateTime absoluteExpiration = new DateTime(year: 2018, month: 3, day: 17, hour: 8, minute: 0, second: 0);
CacheEntry <string> cacheEntry = new CacheEntry <string>(value, absoluteExpiration);
Mock <ICache> sourceCache1Mock = new Mock <ICache>(MockBehavior.Strict);
sourceCache1Mock
.Setup(cache => cache.ReadEntry <string>(cacheKey))
.ReturnsAsync(cacheEntry);
Mock <ICache> sourceCache2Mock = new Mock <ICache>(MockBehavior.Strict);
CompositeCache compositeCache = new CompositeCache(new ICache[] { sourceCache1Mock.Object, sourceCache2Mock.Object });
Assert.Equal(
actual: await compositeCache.ReadEntry <string>(cacheKey),
expected: cacheEntry);
}
