public void TryGetValue_WithValueNotInCache_ReturnsFalse()
{
var cache = new Cache <object, string>();
var decorator = new InvalidationTokenBasedCacheDecorator <object, string> (cache, InvalidationToken.Create());
var key = new object();
string value;
var result = decorator.TryGetValue(key, out value);
Assert.That(result, Is.False);
Assert.That(value, Is.Null);
}
public void TryGetValue_AfterTokenWasInvalidated_RefreshesRevision_ReturnsFalse()
{
var cache = new Cache <object, string>();
var decorator = new InvalidationTokenBasedCacheDecorator <object, string> (cache, InvalidationToken.Create());
var key = new object();
decorator.InvalidationToken.Invalidate();
cache.Add(key, "Value");
string valueOnFirstCall;
var resultOnFirstCall = decorator.TryGetValue(key, out valueOnFirstCall);
Assert.That(resultOnFirstCall, Is.False);
Assert.That(valueOnFirstCall, Is.Null);
cache.Add(key, "Value2");
string valueOnSecondCall;
var resultOnSecondCall = decorator.TryGetValue(key, out valueOnSecondCall);
Assert.That(resultOnSecondCall, Is.True);
Assert.That(valueOnSecondCall, Is.EqualTo("Value2"));
}
public void TryGetValue_WithValueInCache_ReturnsTrueAndSetsOutValue()
{
var cache = new Cache <object, string>();
var decorator = new InvalidationTokenBasedCacheDecorator <object, string> (cache, InvalidationToken.Create());
var key = new object();
cache.Add(key, "Value");
string value;
var result = decorator.TryGetValue(key, out value);
Assert.That(result, Is.True);
Assert.That(value, Is.EqualTo("Value"));
}
public void Clear_RefreshesRevision()
{
var cache = new Cache <object, string>();
var decorator = new InvalidationTokenBasedCacheDecorator <object, string> (cache, InvalidationToken.Create());
decorator.InvalidationToken.Invalidate();
((ICache <object, string>)decorator).Clear();
var key = new object();
cache.Add(key, "Value");
string value;
var result = decorator.TryGetValue(key, out value);
Assert.That(result, Is.True);
Assert.That(value, Is.EqualTo("Value"));
}
public void TryGetValue_AfterTokenWasInvalidated_ReturnsFalse()
{
var cache = new Cache <object, string>();
var decorator = new InvalidationTokenBasedCacheDecorator <object, string> (cache, InvalidationToken.Create());
var key = new object();
cache.Add(key, "Value");
decorator.InvalidationToken.Invalidate();
string value;
var result = decorator.TryGetValue(key, out value);
Assert.That(result, Is.False);
Assert.That(value, Is.Null);
string cachedValue;
bool cachedResult = cache.TryGetValue(key, out cachedValue);
Assert.That(cachedResult, Is.False);
}