vid-app-common/src/test/java/org/onap/vid/testUtils/TestUtils.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3  * VID
   4  * ================================================================================
   5  * Copyright (C) 2017 - 2019 AT&T Intellectual Property. All rights reserved.
   6  * ================================================================================
   7  * Licensed under the Apache License, Version 2.0 (the "License");
   8  * you may not use this file except in compliance with the License.
   9  * You may obtain a copy of the License at
  10  *
  11  *      http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  * ============LICENSE_END=========================================================
  19  */
  20
  21 package org.onap.vid.testUtils;
  22
  23 import static com.fasterxml.jackson.module.kotlin.ExtensionsKt.jacksonObjectMapper;
  24 import static java.util.function.Function.identity;
  25 import static java.util.stream.Collectors.toList;
  26 import static java.util.stream.Collectors.toMap;
  27 import static org.apache.commons.beanutils.PropertyUtils.getPropertyDescriptors;
  28 import static org.apache.commons.lang3.RandomStringUtils.randomAlphabetic;
  29 import static org.apache.commons.text.CharacterPredicates.DIGITS;
  30 import static org.apache.commons.text.CharacterPredicates.LETTERS;
  31 import static org.apache.http.HttpVersion.HTTP_1_1;
  32 import static org.mockito.ArgumentMatchers.any;
  33 import static org.mockito.Mockito.RETURNS_DEFAULTS;
  34 import static org.mockito.Mockito.mock;
  35 import static org.mockito.Mockito.when;
  36 import static org.mockito.Mockito.withSettings;
  37 import static org.onap.vid.utils.KotlinUtilsKt.JACKSON_OBJECT_MAPPER;
  38 import static org.onap.vid.utils.KotlinUtilsKt.JOSHWORKS_JACKSON_OBJECT_MAPPER;
  39 import static org.testng.Assert.fail;
  40
  41 import com.fasterxml.jackson.databind.DeserializationFeature;
  42 import com.fasterxml.jackson.databind.ObjectMapper;
  43 import com.google.code.beanmatchers.BeanMatchers;
  44 import com.google.common.collect.ImmutableList;
  45 import io.joshworks.restclient.http.HttpResponse;
  46 import java.beans.PropertyDescriptor;
  47 import java.io.ByteArrayInputStream;
  48 import java.io.IOException;
  49 import java.io.InputStream;
  50 import java.io.Serializable;
  51 import java.lang.reflect.Field;
  52 import java.net.URI;
  53 import java.nio.charset.StandardCharsets;
  54 import java.util.Arrays;
  55 import java.util.Iterator;
  56 import java.util.List;
  57 import java.util.function.Predicate;
  58 import javax.ws.rs.client.Client;
  59 import javax.ws.rs.client.Invocation;
  60 import javax.ws.rs.client.WebTarget;
  61 import javax.ws.rs.core.GenericType;
  62 import javax.ws.rs.core.MediaType;
  63 import javax.ws.rs.core.Response;
  64 import org.apache.commons.beanutils.BeanUtils;
  65 import org.apache.commons.io.IOUtils;
  66 import org.apache.commons.lang3.exception.ExceptionUtils;
  67 import org.apache.commons.lang3.reflect.FieldUtils;
  68 import org.apache.commons.lang3.reflect.MethodUtils;
  69 import org.apache.commons.text.RandomStringGenerator;
  70 import org.apache.http.HttpResponseFactory;
  71 import org.apache.http.entity.InputStreamEntity;
  72 import org.apache.http.entity.StringEntity;
  73 import org.apache.http.impl.DefaultHttpResponseFactory;
  74 import org.apache.http.message.BasicStatusLine;
  75 import org.apache.log4j.LogManager;
  76 import org.apache.log4j.Logger;
  77 import org.json.JSONArray;
  78 import org.json.JSONObject;
  79 import org.junit.Assert;
  80 import org.mockito.InjectMocks;
  81 import org.mockito.Mock;
  82 import org.mockito.MockSettings;
  83 import org.mockito.Mockito;
  84 import org.mockito.MockitoAnnotations;
  85 import org.mockito.invocation.InvocationOnMock;
  86 import org.mockito.stubbing.Answer;
  87 import org.mockito.stubbing.OngoingStubbing;
  88 import org.onap.portalsdk.core.util.SystemProperties;
  89 import org.onap.vid.asdc.AsdcCatalogException;
  90 import org.onap.vid.asdc.beans.Service;
  91 import org.onap.vid.mso.model.CloudConfiguration;
  92 import org.springframework.core.env.Environment;
  93 import org.testng.annotations.DataProvider;
  94
  95 /**
  96  * Created by Oren on 6/7/17.
  97  */
  98 public class TestUtils {
  99
 100     private static final Logger logger = LogManager.getLogger(TestUtils.class);
 101
 102     /**
 103      * The method compares between two jsons. the function assert that the actual object does not reduce or change the functionallity/parsing of the expected json.
 104      * This means that if the expected JSON has a key which is null or the JSON doesn't have a key which contained in the expected JSON the assert will succeed and the will pass.
 105      * For example : For JSON expected = {a:null} and actual {a:3} the test will pass
 106      * Other example : For JSON expected = {a:3} and actual {a:null} the test will fail
 107      *
 108      * @param expected JSON
 109      * @param actual JSON
 110      */
 111     public static void assertJsonStringEqualsIgnoreNulls(String expected, String actual) {
 112         if (expected == null || expected == JSONObject.NULL) {return;}
 113
 114         JSONObject expectedJSON = new JSONObject(expected);
 115         JSONObject actualJSON = new JSONObject(actual);
 116         Iterator<?> keys = expectedJSON.keys();
 117
 118         while( keys.hasNext() ) {
 119             String key = (String)keys.next();
 120             Object expectedValue = expectedJSON.get(key);
 121             if (expectedValue == JSONObject.NULL){
 122                 continue;
 123             }
 124
 125             Object actualValue = actualJSON.get(key);
 126
 127             if (expectedValue instanceof JSONObject) {
 128                 String expectedVal = expectedValue.toString();
 129                 String actualVal = actualValue.toString();
 130                 assertJsonStringEqualsIgnoreNulls(expectedVal, actualVal);
 131             }
 132             else if (expectedValue instanceof JSONArray) {
 133                 if (actualValue instanceof JSONArray) {
 134                     JSONArray expectedJSONArray = (JSONArray)expectedValue;
 135                     JSONArray actualJSONArray = (JSONArray)actualValue;
 136                     for (int i = 0; i < expectedJSONArray.length(); i++) {
 137                         String expectedItem = expectedJSONArray.get(i).toString();
 138                         String actualItem = actualJSONArray.get(i).toString();
 139                         if (expectedValue instanceof JSONObject)
 140                             assertJsonStringEqualsIgnoreNulls(expectedItem, actualItem);
 141                     }
 142                 }
 143                 else {
 144                     fail("expected: " + expectedValue + " got:" + actualValue);
 145                 }
 146             }
 147             else {
 148                 Assert.assertEquals("assertion fail for key:"+key, expectedValue, actualValue);
 149             }
 150         }
 151     }
 152
 153     public static <T> T readJsonResourceFileAsObject(String pathInResource, Class<T> valueType) throws IOException {
 154         return readJsonResourceFileAsObject(pathInResource, valueType, false);
 155     }
 156
 157     public static <T> T readJsonResourceFileAsObject(String pathInResource, Class<T> valueType,
 158         boolean failOnUnknownProperties)
 159         throws IOException {
 160         ObjectMapper objectMapper = jacksonObjectMapper()
 161             .configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, failOnUnknownProperties);
 162         return objectMapper.readValue(
 163             TestUtils.class.getResource(pathInResource),
 164             valueType);
 165     }
 166
 167     public static String readFileAsString(String pathInResource) {
 168         try {
 169             return IOUtils.toString(TestUtils.class.getResource(pathInResource), "UTF-8");
 170         } catch (IOException e) {
 171             throw new RuntimeException(e);
 172         }
 173     }
 174
 175     public static String[] allPropertiesOf(Class<?> aClass) {
 176         return Arrays.stream(getPropertyDescriptors(aClass))
 177             .map(PropertyDescriptor::getDisplayName)
 178             .toArray(String[]::new);
 179     }
 180
 181     private static <T> List<String> allStringPropertiesOf(T object) {
 182         return Arrays.stream(getPropertyDescriptors(object.getClass()))
 183             .filter(descriptor -> descriptor.getPropertyType().isAssignableFrom(String.class))
 184             .map(PropertyDescriptor::getDisplayName)
 185             .collect(toList());
 186     }
 187
 188     private static List<Field> allMockitoFieldsOf(Object object) {
 189         final Predicate<Field> hasMockAnnotation = field -> field.getAnnotation(Mock.class) != null;
 190         final Predicate<Field> hasInjectMocksAnnotation = field -> field.getAnnotation(InjectMocks.class) != null;
 191
 192         return Arrays.stream(FieldUtils.getAllFields(object.getClass()))
 193             .filter(hasMockAnnotation.or(hasInjectMocksAnnotation))
 194             .collect(toList());
 195     }
 196
 197     /**
 198      * Calls MockitoAnnotations.initMocks after nullifying any field which is annotated @Mocke or @InjectMock.
 199      * This makes a "hard rest" to any mocked state or instance. Expected to be invoked between any @Tests in class, by
 200      * being called in TestNG's @BeforeMethod (or equivalently JUnit's @BeforeTest).
 201      */
 202     public static void initMockitoMocks(Object testClass) {
 203         for (Field field : allMockitoFieldsOf(testClass)) {
 204             try {
 205                 // Write null to fields
 206                 FieldUtils.writeField(field, testClass, null, true);
 207             } catch (ReflectiveOperationException e) {
 208                 ExceptionUtils.rethrow(e);
 209             }
 210         }
 211
 212         MockitoAnnotations.initMocks(testClass);
 213     }
 214
 215     /**
 216      * Sets each String property with a value equal to the name of
 217      * the property; e.g.: { name: "name", city: "city" }
 218      * @param object
 219      * @param <T>
 220      * @return The modified object
 221      */
 222     public static <T> T setStringsInStringProperties(T object) {
 223         try {
 224             final List<String> stringFields = allStringPropertiesOf(object);
 225
 226             BeanUtils.populate(object, stringFields.stream()
 227                 .collect(toMap(identity(), identity())));
 228
 229             return object;
 230         } catch (Exception e) {
 231             throw new RuntimeException(e);
 232         }
 233     }
 234
 235     public static void registerCloudConfigurationValueGenerator() {
 236         BeanMatchers.registerValueGenerator(() -> new CloudConfiguration(
 237                 randomAlphabetic(7), randomAlphabetic(7), randomAlphabetic(7)
 238             ), CloudConfiguration.class);
 239     }
 240
 241     public static OngoingStubbing<InputStream> mockGetRawBodyWithStringBody(HttpResponse<String> httpResponse, String body) {
 242         try {
 243             return when(httpResponse.getRawBody()).thenReturn(IOUtils.toInputStream(body, StandardCharsets.UTF_8.name()));
 244         } catch (IOException e) {
 245             ExceptionUtils.rethrow(e);
 246         }
 247         return null; //never shall get here
 248     }
 249
 250     public static HttpResponse<String> createTestHttpResponse(int statusCode, String entity) throws Exception {
 251         HttpResponseFactory factory = new DefaultHttpResponseFactory();
 252         org.apache.http.HttpResponse response = factory.newHttpResponse(new BasicStatusLine(HTTP_1_1, statusCode, null), null);
 253         if (entity != null) {
 254             response.setEntity(new StringEntity(entity));
 255         }
 256         return new HttpResponse<>(response, String.class, null);
 257     }
 258
 259     public static <T> HttpResponse<T> createTestHttpResponse(int statusCode, T entity, final Class<T> entityClass) throws Exception {
 260         HttpResponseFactory factory = new DefaultHttpResponseFactory();
 261         org.apache.http.HttpResponse response = factory.newHttpResponse(new BasicStatusLine(HTTP_1_1, statusCode, null), null);
 262         if (entity != null) {
 263             InputStream inputStream = IOUtils.toInputStream(JACKSON_OBJECT_MAPPER.writeValueAsString(entity), StandardCharsets.UTF_8.name());
 264             response.setEntity(new InputStreamEntity(inputStream));
 265         }
 266         return new HttpResponse(response, entityClass, JOSHWORKS_JACKSON_OBJECT_MAPPER);
 267     }
 268
 269
 270     public static class JavaxRsClientMocks {
 271         private final javax.ws.rs.client.Client fakeClient;
 272         private final javax.ws.rs.client.Invocation.Builder fakeBuilder;
 273         private final javax.ws.rs.client.Invocation fakeInvocation;
 274         private final Response fakeResponse;
 275
 276         public javax.ws.rs.client.Client getFakeClient() {
 277             return fakeClient;
 278         }
 279
 280         public javax.ws.rs.client.Invocation.Builder getFakeBuilder() {
 281             return fakeBuilder;
 282         }
 283
 284         public Response getFakeResponse() {
 285             return fakeResponse;
 286         }
 287
 288         public JavaxRsClientMocks() {
 289             final MockSettings mockSettings = withSettings().defaultAnswer(new TriesToReturnMockByType());
 290
 291             fakeClient = mock(javax.ws.rs.client.Client.class, mockSettings);
 292             fakeBuilder = mock(javax.ws.rs.client.Invocation.Builder.class, mockSettings);
 293             fakeInvocation = mock(javax.ws.rs.client.Invocation.class, mockSettings);
 294             fakeResponse = mock(Response.class, mockSettings);
 295             final javax.ws.rs.client.WebTarget fakeWebTarget = mock(javax.ws.rs.client.WebTarget.class, mockSettings);
 296
 297             TriesToReturnMockByType.setAvailableMocks(
 298                     fakeClient,
 299                     fakeWebTarget,
 300                     fakeBuilder,
 301                     fakeInvocation,
 302                     fakeResponse
 303             );
 304             Mockito.when(fakeBuilder.get(any(Class.class))).thenReturn(null);
 305             Mockito.when(fakeBuilder.get(any(GenericType.class))).thenReturn(null);
 306             Mockito.when(fakeResponse.getStatus()).thenReturn(200);
 307             Mockito.when(fakeResponse.getStatusInfo()).thenReturn(Response.Status.OK);
 308             Mockito.when(fakeResponse.readEntity(Service.class)).thenReturn(null);
 309             Mockito.when(fakeResponse.readEntity(InputStream.class)).thenReturn(new ByteArrayInputStream(new byte[]{}));
 310             Mockito.when(fakeResponse.readEntity(String.class)).thenReturn(null);
 311         }
 312     }
 313
 314     /*
 315        inspired out from newer Mockito version
 316         returns a mock from given list if it's a matching return-type
 317     */
 318     private static class TriesToReturnMockByType implements Answer<Object>, Serializable {
 319         private final Answer<Object> defaultReturn = RETURNS_DEFAULTS;
 320         private static List<Object> availableMocks = ImmutableList.of();
 321
 322         static void setAvailableMocks(Object... mocks) {
 323             availableMocks = ImmutableList.copyOf(mocks);
 324         }
 325
 326         public Object answer(InvocationOnMock invocation) throws Throwable {
 327             Class<?> methodReturnType = invocation.getMethod().getReturnType();
 328
 329             return availableMocks.stream()
 330                     .filter(mock -> methodReturnType.isAssignableFrom(mock.getClass()))
 331                     //.peek(m -> logger.info("found a mock: " + m.getClass().getName()))
 332                     .findFirst()
 333                     .orElse(defaultReturn.answer(invocation));
 334         }
 335     }
 336
 337
 338     //The method mocks only some methods used in my case
 339     //You may add some other when for your test here
 340     public static Response mockResponseForJavaxClient(Client javaxClientMock) {
 341         Response  mockResponse = mock(Response.class);
 342         WebTarget webTarget = mock(WebTarget.class);
 343         Invocation.Builder builder = mock(Invocation.Builder.class);
 344         when(javaxClientMock.target(any(URI.class))).thenReturn(webTarget);
 345         when(webTarget.path(any())).thenReturn(webTarget);
 346         when(webTarget.request(any(MediaType.class))).thenReturn(builder);
 347         when(builder.headers(any())).thenReturn(builder);
 348         when(builder.header(any(), any())).thenReturn(builder);
 349         when(builder.get()).thenReturn(mockResponse);
 350         return mockResponse;
 351     }
 352
 353
 354     public interface Test {
 355
 356         void apply() throws AsdcCatalogException;
 357     }
 358
 359     public static void testWithSystemProperty(String key, String value, Test test) throws Exception {
 360         SystemProperties systemProperties = new SystemProperties();
 361         //use reflection to invoke protected method
 362         Environment originalEnvironment = (Environment) MethodUtils
 363             .invokeMethod(systemProperties, true, "getEnvironment");
 364
 365         try {
 366             Environment environment = mock(Environment.class);
 367             systemProperties.setEnvironment(environment);
 368             when(environment.getRequiredProperty(key)).thenReturn(value);
 369             when(environment.containsProperty(key)).thenReturn(true);
 370             test.apply();
 371         }
 372         finally {
 373             systemProperties.setEnvironment(originalEnvironment);
 374         }
 375     }
 376
 377     private static RandomStringGenerator generator = new RandomStringGenerator.Builder()
 378             .withinRange('0', 'z')
 379             .filteredBy(LETTERS, DIGITS)
 380             .build();
 381
 382     public static String generateRandomAlphaNumeric(int length) {
 383         return generator.generate(length);
 384     }
 385
 386     @DataProvider
 387     public static Object[][] trueAndFalse() {
 388         return new Object[][]{{true}, {false}};
 389     }
 390
 391 }