| /* |
| * Copyright 2016, gRPC 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 io.grpc.internal; |
| |
| import static org.junit.Assert.assertNull; |
| import static org.junit.Assert.assertSame; |
| import static org.junit.Assert.assertTrue; |
| import static org.junit.Assert.fail; |
| |
| import io.grpc.Attributes; |
| import io.grpc.NameResolverProvider; |
| import java.net.URI; |
| import org.junit.Test; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| /** Unit tests for {@link DnsNameResolverProvider}. */ |
| @RunWith(JUnit4.class) |
| public class DnsNameResolverProviderTest { |
| private DnsNameResolverProvider provider = new DnsNameResolverProvider(); |
| |
| @Test |
| public void provided() { |
| for (NameResolverProvider current |
| : NameResolverProvider.getCandidatesViaServiceLoader(getClass().getClassLoader())) { |
| if (current instanceof DnsNameResolverProvider) { |
| return; |
| } |
| } |
| fail("DnsNameResolverProvider not registered"); |
| } |
| |
| @Test |
| public void providedHardCoded() { |
| for (NameResolverProvider current |
| : NameResolverProvider.getCandidatesViaHardCoded(getClass().getClassLoader())) { |
| if (current instanceof DnsNameResolverProvider) { |
| return; |
| } |
| } |
| fail("DnsNameResolverProvider not registered"); |
| } |
| |
| @Test |
| public void isAvailable() { |
| assertTrue(provider.isAvailable()); |
| } |
| |
| @Test |
| public void newNameResolver() { |
| assertSame(DnsNameResolver.class, |
| provider.newNameResolver(URI.create("dns:///localhost:443"), Attributes.EMPTY).getClass()); |
| assertNull( |
| provider.newNameResolver(URI.create("notdns:///localhost:443"), Attributes.EMPTY)); |
| } |
| } |