| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you 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 org.apache.ratis.util; |
| |
| import org.apache.ratis.BaseTest; |
| import org.junit.Test; |
| |
| import java.util.Arrays; |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.Set; |
| |
| public class TestPreconditions extends BaseTest { |
| @Test(timeout = 1000) |
| public void testAssertUnique() { |
| final Set<Integer> empty = Collections.emptySet(); |
| Preconditions.assertUnique(empty); |
| Preconditions.assertUnique(empty, empty); |
| |
| final Set<Integer> one = Collections.singleton(1); |
| Preconditions.assertUnique(one); |
| Preconditions.assertUnique(empty, one); |
| testFailureCase("add [1] to [1]", () -> Preconditions.assertUnique(one, one), IllegalStateException.class); |
| |
| final List<Integer> three = Arrays.asList(1, 2, 3); |
| testFailureCase("add [1, 2, 3] to [1]", () -> Preconditions.assertUnique(three, one), IllegalStateException.class); |
| testFailureCase("add [1] to [1, 2, 3]", () -> Preconditions.assertUnique(one, three), IllegalStateException.class); |
| |
| final List<Integer> duplicated = Arrays.asList(3, 2, 3); |
| testFailureCase("check [3, 2, 3]", () -> Preconditions.assertUnique(duplicated), IllegalStateException.class); |
| testFailureCase("add [1] to [3, 2, 3]", () -> Preconditions.assertUnique(duplicated, one), |
| IllegalStateException.class); |
| testFailureCase("add [3, 2, 3] to [1]", () -> Preconditions.assertUnique(one, duplicated), |
| IllegalStateException.class); |
| |
| Preconditions.assertUnique(three, Arrays.asList(4, 5, 6)); |
| } |
| } |