public void AddWithExistingTagTest()
{
var provider = new MemoryCacheProvider();
string key = "AddWithExistingTagTest" + DateTime.Now.Ticks;
string[] tags = new[] { "a", "b" };
var cacheKey = new CacheKey(key, tags);
var value = "Test Value " + DateTime.Now;
var cachePolicy = new CachePolicy();
bool result = provider.Add(cacheKey, value, cachePolicy);
result.Should().BeTrue();
// make sure cache key is in underlying MemoryCache
var cacheTag = new CacheTag("a");
string tagKey = MemoryCacheProvider.GetTagKey(cacheTag);
tagKey.Should().NotBeNullOrEmpty();
var cachedTag = MemoryCache.Default.Get(tagKey);
cachedTag.Should().NotBeNull();
// add second value with same tag
string key2 = "AddWithExistingTagTest2" + DateTime.Now.Ticks;
string[] tags2 = new[] { "a", "c" };
var cacheKey2 = new CacheKey(key2, tags2);
var value2 = "Test Value 2 " + DateTime.Now;
var cachePolicy2 = new CachePolicy();
bool result2 = provider.Add(cacheKey2, value2, cachePolicy2);
result2.Should().BeTrue();
// tag 'a' should have same value
var cachedTag2 = MemoryCache.Default.Get(tagKey);
cachedTag2.Should().NotBeNull();
cachedTag2.Should().Be(cachedTag);
}
public void AddWithTagsTest()
{
var provider = new MemoryCacheProvider();
string key = "AddWithTagsTest" + DateTime.Now.Ticks;
string[] tags = new[] { "a", "b" };
var cacheKey = new CacheKey(key, tags);
var value = "Test Value " + DateTime.Now;
var cachePolicy = new CachePolicy();
bool result = provider.Add(cacheKey, value, cachePolicy);
result.Should().BeTrue();
// look in underlying MemoryCache
string innerKey = MemoryCacheProvider.GetKey(cacheKey);
var cachedValue = MemoryCache.Default.Get(innerKey);
cachedValue.Should().NotBeNull();
cachedValue.Should().Be(value);
// make sure cache key is in underlying MemoryCache
var cacheTag = new CacheTag("a");
string tagKey = MemoryCacheProvider.GetTagKey(cacheTag);
tagKey.Should().NotBeNullOrEmpty();
var cachedTag = MemoryCache.Default.Get(tagKey);
cachedTag.Should().NotBeNull();
}
public void AddTest()
{
var provider = new MemoryCacheProvider();
var cacheKey = new CacheKey("AddTest" + DateTime.Now.Ticks);
var value = "Test Value " + DateTime.Now;
var cachePolicy = new CachePolicy();
bool result = provider.Add(cacheKey, value, cachePolicy);
result.Should().BeTrue();
// look in underlying MemoryCache
string innerKey = MemoryCacheProvider.GetKey(cacheKey);
var cachedValue = MemoryCache.Default.Get(innerKey);
cachedValue.Should().NotBeNull();
cachedValue.Should().Be(value);
}
public void GetOrAddTest()
{
var provider = new MemoryCacheProvider();
var cacheKey = new CacheKey("GetOrAddTest" + DateTime.Now.Ticks);
var value = "Test Value " + DateTime.Now;
var cachePolicy = new CachePolicy();
int callCount = 0;
Func<CacheKey, object> valueFactory = k =>
{
callCount++;
return value;
};
var result = provider.GetOrAdd(cacheKey, valueFactory, cachePolicy);
result.Should().Be(value);
callCount.Should().Be(1);
// look in underlying MemoryCache
string innerKey = MemoryCacheProvider.GetKey(cacheKey);
var cachedValue = MemoryCache.Default.Get(innerKey);
cachedValue.Should().NotBeNull();
cachedValue.Should().Be(value);
callCount = 0;
var result2 = provider.GetOrAdd(cacheKey, valueFactory, cachePolicy);
result2.Should().Be(value);
callCount.Should().Be(0);
}
public void GetTest()
{
var provider = new MemoryCacheProvider();
var cacheKey = new CacheKey("GetTest" + DateTime.Now.Ticks);
var value = "Get Value " + DateTime.Now;
var cachePolicy = new CachePolicy();
bool result = provider.Add(cacheKey, value, cachePolicy);
result.Should().BeTrue();
var existing = provider.Get<string>(cacheKey);
existing.Should().NotBeNull();
existing.Should().BeSameAs(value);
}
public void ExpireTest()
{
var cache = MemoryCache.Default;
// purge all values
foreach (KeyValuePair<string, object> pair in cache)
cache.Remove(pair.Key);
var provider = new MemoryCacheProvider();
string key = "ExpireTest" + DateTime.Now.Ticks;
var tags = new[] { "a", "b" };
var cacheKey = new CacheKey(key, tags);
var value = "Test Value " + DateTime.Now;
var cachePolicy = new CachePolicy();
bool result = provider.Add(cacheKey, value, cachePolicy);
result.Should().BeTrue();
// add second value with same tag
string key2 = "ExpireTest2" + DateTime.Now.Ticks;
var tags2 = new[] { "a", "c" };
var cacheKey2 = new CacheKey(key2, tags2);
var value2 = "Test Value 2 " + DateTime.Now;
var cachePolicy2 = new CachePolicy();
bool result2 = provider.Add(cacheKey2, value2, cachePolicy2);
result2.Should().BeTrue();
// add third value with same tag
string key3 = "ExpireTest3" + DateTime.Now.Ticks;
var tags3 = new[] { "b", "c" };
var cacheKey3 = new CacheKey(key3, tags3);
var value3 = "Test Value 3 " + DateTime.Now;
var cachePolicy3 = new CachePolicy();
bool result3 = provider.Add(cacheKey3, value3, cachePolicy3);
result3.Should().BeTrue();
var cacheTag = new CacheTag("a");
string tagKey = MemoryCacheProvider.GetTagKey(cacheTag);
tagKey.Should().NotBeNullOrEmpty();
// underlying cache
cache.GetCount().Should().Be(6);
var cachedTag = cache.Get(tagKey);
cachedTag.Should().NotBeNull();
System.Threading.Thread.Sleep(500);
// expire actually just changes the value for tag key
provider.Expire(cacheTag);
var expiredTag = cache.Get(tagKey);
expiredTag.Should().NotBeNull();
expiredTag.Should().NotBe(cachedTag);
// items should have been removed
var expiredValue = provider.Get<string>(cacheKey);
expiredValue.Should().BeNull();
var expiredValue2 = provider.Get<string>(cacheKey2);
expiredValue2.Should().BeNull();
var expiredValue3 = provider.Get<string>(cacheKey3);
expiredValue3.Should().NotBeNull();
cache.GetCount().Should().Be(4);
}
