public void ConcurrentOrderedMap_Supports_AddOrUpdate()
{
var dict = new ConcurrentOrderedDictionary <string, string>();
var result = dict.AddOrUpdate("foo", "bar", (k, v) => "baz");
Assert.Single(dict);
Assert.Equal("bar", result);
result = dict.AddOrUpdate("foo", "baz", (k, v) => "baz");
Assert.Single(dict);
Assert.Equal("baz", result);
}
public void ConcurrentOrderedMap_AddOrUpdate_PassesOldValueForExistingItem()
{
var dict = new ConcurrentOrderedDictionary <string, string>();
dict.AddOrUpdate("foo", "bar", (k, v) => "baz");
string callbackValue = null;
dict.AddOrUpdate("foo", "baz", (k, v) => {
callbackValue = v;
return("baz");
});
Assert.Equal("bar", callbackValue);
}
public void ConcurrentOrderedMap_AddOrUpdate_UpdateCallbackNotCalledForNewItem()
{
var dict = new ConcurrentOrderedDictionary <string, string>();
string callbackValue = null;
dict.AddOrUpdate("foo", "bar", (k, v) => {
callbackValue = v;
return("baz");
});
Assert.Null(callbackValue);
}