/* * Copyright © 2017-2019 Michael Weirauch ([email protected]) * * 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.github.mweirauch.micrometer.jvm.extras.procfs; import static org.junit.Assert.assertEquals; import static org.junit.Assert.assertSame; import static org.mockito.ArgumentMatchers.any; import static org.mockito.Mockito.doThrow; import static org.mockito.Mockito.mock; import java.io.IOException; import java.net.URISyntaxException; import java.nio.file.Path; import java.nio.file.Paths; import org.junit.BeforeClass; import org.junit.Test; import com.google.common.testing.NullPointerTester; import com.google.common.testing.NullPointerTester.Visibility; import io.github.mweirauch.micrometer.jvm.extras.procfs.ProcfsStatus.KEY; public class ProcfsStatusTest { private static Path BASE; @BeforeClass public static void beforeClass() throws URISyntaxException { BASE = Paths.get(ProcfsStatusTest.class.getResource("/procfs/").toURI()); } @Test public void testNullContract() { final ProcfsStatus uut = new ProcfsStatus(mock(ProcfsReader.class)); final NullPointerTester npt = new NullPointerTester(); npt.testConstructors(uut.getClass(), Visibility.PACKAGE); npt.testStaticMethods(uut.getClass(), Visibility.PACKAGE); npt.testInstanceMethods(uut, Visibility.PACKAGE); } @Test public void testInstantiation() { assertSame(ProcfsStatus.getInstance(), ProcfsStatus.getInstance()); } @Test public void testSimple() { final ProcfsStatus uut = new ProcfsStatus(new ProcfsReader(BASE, "status-001.txt")); assertEquals(Double.valueOf(55), uut.get(KEY.THREADS)); assertEquals(Double.valueOf(8678297600L), uut.get(KEY.VSS)); assertEquals(Double.valueOf(1031479296L), uut.get(KEY.RSS)); assertEquals(Double.valueOf(0), uut.get(KEY.SWAP)); } @Test public void testReturnDefaultValuesOnReaderFailure() throws IOException { final ProcfsReader reader = mock(ProcfsReader.class); doThrow(new IOException("fail")).when(reader).read(any()); final ProcfsStatus uut = new ProcfsStatus(reader); assertEquals(Double.valueOf(-1), uut.get(KEY.THREADS)); } }