public void testScan_multipleIterations()
{
using (Redis redis = new Redis()) {
Redis.ScanResult result = null;
string[] keys =
{
"key1", "key2", "key3", "key4", "test1", "test2", "test3", "test4",
"key5", "key6", "key7", "key8", "test5", "test6", "test7", "test8",
"foo1", "foo2", "foo3", "foo4", "fuzz1", "fuzz2", "fuzz3", "fuzz4",
"foo5", "foo6", "foo7", "foo8", "fuzz5", "fuzz6", "fuzz7", "fuzz8",
};
foreach (string key in keys)
{
redis.set(key, "scantest");
}
int iterations = 0;
do
{
result = redis.scan(result == null ? 0L : result.nextCursor);
iterations += 1;
CollectionAssert.IsSubsetOf(result.results, keys);
} while (result.nextCursor != 0);
if (iterations == 1)
{
Assert.Inconclusive("Unable to iterate multiple times. Add more keys or use COUNT option.");
}
}
}
public void testScan_emptyDatabase()
{
using (Redis redis = new Redis()) {
Redis.ScanResult result = redis.scan();
Assert.AreEqual(0L, result.nextCursor);
CollectionAssert.IsSubsetOf(result.results, new string[] {});
}
}
/// <summary>
/// Enumerates all of the keys
/// </summary>
/// <param name="redis">The redis client</param>
/// <returns>The keys in the database</returns>
public static IEnumerable <string> allKeys(this Redis redis)
{
HashSet <string> existingKeys = new HashSet <string>();
long cursor = 0L;
do
{
Redis.ScanResult result = redis.scan(cursor);
cursor = result.nextCursor;
foreach (string newKey in result.results.Except(existingKeys))
{
yield return(newKey);
}
existingKeys.UnionWith(result.results);
} while (cursor != 0);
}
