/* * Copyright 2014-2019 Netflix, Inc. * * 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 com.netflix.spectator.placeholders; import com.netflix.spectator.api.BasicTag; import org.junit.jupiter.api.Assertions; import org.junit.jupiter.api.Test; import java.util.concurrent.atomic.AtomicReference; public class TagFactoryTest { @Test public void fromSupplier() { TagFactory f = TagFactory.from("foo", () -> "bar"); Assertions.assertEquals("foo", f.name()); Assertions.assertEquals(new BasicTag("foo", "bar"), f.createTag()); } @Test public void fromSupplierNull() { TagFactory f = TagFactory.from("foo", () -> null); Assertions.assertEquals("foo", f.name()); Assertions.assertNull(f.createTag()); } @Test public void fromSupplierDynamic() { AtomicReference<String> value = new AtomicReference<>(); TagFactory f = TagFactory.from("foo", value::get); Assertions.assertEquals("foo", f.name()); Assertions.assertNull(f.createTag()); value.set("bar"); Assertions.assertEquals(new BasicTag("foo", "bar"), f.createTag()); } }