Java tutorial
/* * 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.nifi.minifi.c2.provider.nifi.rest; import com.fasterxml.jackson.core.JsonFactory; import com.google.common.collect.Lists; import org.apache.nifi.minifi.c2.api.ConfigurationProviderException; import org.apache.nifi.minifi.c2.api.util.Pair; import org.apache.nifi.minifi.c2.provider.util.HttpConnector; import org.junit.Before; import org.junit.Test; import java.io.IOException; import java.net.HttpURLConnection; import java.util.List; import java.util.NoSuchElementException; import static org.junit.Assert.assertEquals; import static org.junit.Assert.assertFalse; import static org.mockito.Mockito.mock; import static org.mockito.Mockito.verify; import static org.mockito.Mockito.when; public class TemplatesIteratorTest { private JsonFactory jsonFactory; private HttpURLConnection httpURLConnection; private HttpConnector httpConnector; @Before public void setup() throws ConfigurationProviderException { jsonFactory = new JsonFactory(); httpURLConnection = mock(HttpURLConnection.class); httpConnector = mock(HttpConnector.class); when(httpConnector.get(TemplatesIterator.FLOW_TEMPLATES)).thenReturn(httpURLConnection); } @Test(expected = NoSuchElementException.class) public void testIteratorNoSuchElementException() throws ConfigurationProviderException, IOException { when(httpURLConnection.getInputStream()) .thenReturn(TemplatesIteratorTest.class.getClassLoader().getResourceAsStream("noTemplates.json")); try (TemplatesIterator templatesIterator = new TemplatesIterator(httpConnector, jsonFactory)) { assertFalse(templatesIterator.hasNext()); templatesIterator.next(); } finally { verify(httpURLConnection).disconnect(); } } @Test public void testIteratorNoTemplates() throws ConfigurationProviderException, IOException { when(httpURLConnection.getInputStream()) .thenReturn(TemplatesIteratorTest.class.getClassLoader().getResourceAsStream("noTemplates.json")); List<Pair<String, String>> idToNameList; try (TemplatesIterator templatesIterator = new TemplatesIterator(httpConnector, jsonFactory)) { idToNameList = Lists.newArrayList(templatesIterator); } assertEquals(0, idToNameList.size()); verify(httpURLConnection).disconnect(); } @Test public void testIteratorSingleTemplate() throws ConfigurationProviderException, IOException { when(httpURLConnection.getInputStream()) .thenReturn(TemplatesIteratorTest.class.getClassLoader().getResourceAsStream("oneTemplate.json")); List<Pair<String, String>> idToNameList; try (TemplatesIterator templatesIterator = new TemplatesIterator(httpConnector, jsonFactory)) { idToNameList = Lists.newArrayList(templatesIterator); } assertEquals(1, idToNameList.size()); Pair<String, String> idNamePair = idToNameList.get(0); assertEquals("d05845ae-ceda-4c50-b7c2-037e42ddf1d3", idNamePair.getFirst()); assertEquals("raspi3.v1", idNamePair.getSecond()); verify(httpURLConnection).disconnect(); } @Test public void testIteratorTwoTemplates() throws ConfigurationProviderException, IOException { when(httpURLConnection.getInputStream()) .thenReturn(TemplatesIteratorTest.class.getClassLoader().getResourceAsStream("twoTemplates.json")); List<Pair<String, String>> idToNameList; try (TemplatesIterator templatesIterator = new TemplatesIterator(httpConnector, jsonFactory)) { idToNameList = Lists.newArrayList(templatesIterator); } assertEquals(2, idToNameList.size()); Pair<String, String> idNamePair = idToNameList.get(0); assertEquals("d05845ae-ceda-4c50-b7c2-037e42ddf1d3", idNamePair.getFirst()); assertEquals("raspi3.v1", idNamePair.getSecond()); idNamePair = idToNameList.get(1); assertEquals("9384b48d-85b4-478a-bf3e-64d113f8fbc5", idNamePair.getFirst()); assertEquals("raspi3.v2", idNamePair.getSecond()); verify(httpURLConnection).disconnect(); } }