public void InternCache_CreateWeak_Trim()
{
var cache = InternCache.CreateWeakInternCache <string>(MemoizationCacheFactory.Unbounded, Copy);
var set = new HashSet <string>();
for (var n = 0; n < 2; n++)
{
InternSome(cache, set); // Ensures lifetime of locals is not extended in DEBUG mode
Assert.AreEqual(1, cache.Count);
cache.Trim();
Assert.AreEqual(1, cache.Count);
set.Clear();
GC.Collect();
GC.WaitForPendingFinalizers();
InternSome(cache, set); // Resurrects weak references
Assert.AreEqual(1, cache.Count);
cache.Trim();
Assert.AreEqual(1, cache.Count);
set.Clear();
GC.Collect();
GC.WaitForPendingFinalizers();
cache.Trim();
Assert.AreEqual(0, cache.Count);
}
}
public void InternCache_CreateWeak_ArgumentChecking()
{
#pragma warning disable IDE0034 // Simplify 'default' expression (illustrative of method signature)
Assert.ThrowsException <ArgumentNullException>(() => InternCache.CreateWeakInternCache <string>(default(IMemoizationCacheFactory), Copy));
Assert.ThrowsException <ArgumentNullException>(() => InternCache.CreateWeakInternCache <string>(MemoizationCacheFactory.Unbounded, default(Func <string, string>)));
#pragma warning restore IDE0034 // Simplify 'default' expression
}
public void InternCache_CreateWeak_Dispose()
{
var cache = InternCache.CreateWeakInternCache <string>(MemoizationCacheFactory.Unbounded, Copy);
cache.Intern("bar".ToUpper());
cache.Intern("bar".ToUpper());
cache.Dispose();
Assert.ThrowsException <ObjectDisposedException>(() => cache.Intern("bar".ToUpper()));
}
public void InternCache_CreateWeak_Simple2()
{
var cache = InternCache.CreateWeakInternCache <string>(MemoizationCacheFactory.Unbounded, Copy);
for (var n = 0; n < 2; n++)
{
for (var i = 0; i < 100; i++)
{
Assert.AreEqual("BAR", cache.Intern("bar".ToUpper()));
}
Assert.AreEqual(1, cache.Count);
cache.Clear();
Assert.AreEqual(0, cache.Count);
}
}
public void InternCache_CreateWeak_Simple1()
{
var cache = InternCache.CreateWeakInternCache <string>(MemoizationCacheFactory.Unbounded, Copy);
var arg1 = "bar".ToUpper();
var res1 = cache.Intern(arg1);
Assert.AreEqual("BAR", res1);
Assert.AreNotSame(arg1, res1); // cloning behavior in the value space
var arg2 = "bar".ToUpper();
var res2 = cache.Intern(arg2);
Assert.AreEqual("BAR", res2);
Assert.AreNotSame(arg2, res2);
Assert.AreSame(res1, res2);
Assert.IsFalse(string.IsNullOrEmpty(cache.DebugView));
}
public void InternCache_CreateWeak_Trim_NotSupported()
{
var cache = InternCache.CreateWeakInternCache <string>(MemoizationCacheFactory.Nop, Copy);
Assert.ThrowsException <NotSupportedException>(() => cache.Trim());
}
public void InternCache_CreateWeak_BadClone()
{
var cache = InternCache.CreateWeakInternCache <string>(MemoizationCacheFactory.Unbounded, s => s);
Assert.ThrowsException <InvalidOperationException>(() => cache.Intern("foo"));
}