mirror of
https://github.com/google/nomulus.git
synced 2025-04-30 20:17:51 +02:00
646dcecd7e
This creates a specified number of tokens of a given schema, with a dryrun option to not persist them. ------------- Created by MOE: https://github.com/google/moe MOE_MIGRATED_REVID=181403775
85 lines
2.7 KiB
Java
85 lines
2.7 KiB
Java
// Copyright 2017 The Nomulus Authors. All Rights Reserved.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package google.registry.testing;
|
|
|
|
import static com.google.common.base.Preconditions.checkArgument;
|
|
import static com.google.common.collect.Lists.charactersOf;
|
|
|
|
import com.google.common.collect.Iterators;
|
|
import google.registry.util.RandomStringGenerator;
|
|
import google.registry.util.StringGenerator;
|
|
import java.util.Iterator;
|
|
import javax.inject.Named;
|
|
|
|
/**
|
|
* A string generator that produces strings using sequential characters in its alphabet. This is
|
|
* most useful in tests as a "fake" password generator (which would otherwise use
|
|
* {@link RandomStringGenerator}.
|
|
*
|
|
* <p>Note that consecutive calls to createString will continue where the last call left off in
|
|
* the alphabet.
|
|
*/
|
|
public class DeterministicStringGenerator extends StringGenerator {
|
|
|
|
private Iterator<Character> iterator;
|
|
private final Rule rule;
|
|
private int counter = 0;
|
|
|
|
/** String generation rules. */
|
|
public enum Rule {
|
|
|
|
/**
|
|
* Simple string generation, cycling through sequential letters in the alphabet. May produce
|
|
* duplicates.
|
|
*/
|
|
DEFAULT,
|
|
|
|
/**
|
|
* Same cyclical pattern as {@link Rule#DEFAULT}, prepending the iteration number and an
|
|
* underscore. Intended to avoid duplicates.
|
|
*/
|
|
PREPEND_COUNTER
|
|
}
|
|
|
|
/**
|
|
* Generates a string using sequential characters in the generator's alphabet, cycling back to the
|
|
* beginning of the alphabet if necessary.
|
|
*/
|
|
@Override
|
|
public String createString(int length) {
|
|
checkArgument(length > 0, "String length must be positive.");
|
|
StringBuilder password = new StringBuilder();
|
|
for (int i = 0; i < length; i++) {
|
|
password.append(iterator.next());
|
|
}
|
|
switch (rule) {
|
|
case PREPEND_COUNTER:
|
|
return String.format("%04d_%s", counter++, password.toString());
|
|
case DEFAULT:
|
|
default:
|
|
return password.toString();
|
|
}
|
|
}
|
|
|
|
public DeterministicStringGenerator(@Named("alphabetBase64") String alphabet, Rule rule) {
|
|
super(alphabet);
|
|
iterator = Iterators.cycle(charactersOf(alphabet));
|
|
this.rule = rule;
|
|
}
|
|
|
|
public DeterministicStringGenerator(@Named("alphabetBase64") String alphabet) {
|
|
this(alphabet, Rule.DEFAULT);
|
|
}
|
|
}
|