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Diffstat (limited to 'dcae-analytics-model/src/test/java/org/onap/dcae/apod/analytics/model/BaseAnalyticsModelUnitTest.java')
-rw-r--r-- | dcae-analytics-model/src/test/java/org/onap/dcae/apod/analytics/model/BaseAnalyticsModelUnitTest.java | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/dcae-analytics-model/src/test/java/org/onap/dcae/apod/analytics/model/BaseAnalyticsModelUnitTest.java b/dcae-analytics-model/src/test/java/org/onap/dcae/apod/analytics/model/BaseAnalyticsModelUnitTest.java new file mode 100644 index 0000000..37b2790 --- /dev/null +++ b/dcae-analytics-model/src/test/java/org/onap/dcae/apod/analytics/model/BaseAnalyticsModelUnitTest.java @@ -0,0 +1,154 @@ +/* + * ===============================LICENSE_START====================================== + * dcae-analytics + * ================================================================================ + * Copyright © 2017 AT&T Intellectual Property. 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. + * ============================LICENSE_END=========================================== + */ + +package org.onap.dcae.apod.analytics.model; + +import com.fasterxml.jackson.core.JsonProcessingException; +import com.fasterxml.jackson.databind.ObjectMapper; +import com.google.common.base.Suppliers; +import org.json.JSONException; +import org.junit.Assert; +import org.junit.BeforeClass; +import org.onap.dcae.apod.analytics.model.util.json.AnalyticsModelObjectMapperSupplier; +import org.onap.dcae.apod.analytics.test.BaseDCAEAnalyticsUnitTest; + +import java.io.IOException; +import java.io.InputStream; + +import static org.hamcrest.CoreMatchers.is; +import static org.junit.Assert.assertThat; + +/** + * @author Rajiv Singla . Creation Date: 10/17/2016. + */ +public abstract class BaseAnalyticsModelUnitTest extends BaseDCAEAnalyticsUnitTest { + + + protected static ObjectMapper objectMapper; + + /** + * Before running test cases need to assign object mapper. + */ + @BeforeClass + public static void beforeClass() { + final AnalyticsModelObjectMapperSupplier analyticsModelObjectMapperSupplier = + new AnalyticsModelObjectMapperSupplier(); + objectMapper = Suppliers.memoize(analyticsModelObjectMapperSupplier).get(); + } + + + /** + * Deserialize given Json file location to given model class and returns it back without any validation check. + * + * @param jsonFileLocation Classpath location of the json file + * @param modelClass Model Class type + * @param <T> Json Model Type + * @return Deserialized Model Object + */ + public static <T> T deserializeJsonFileToModel(String jsonFileLocation, Class<T> modelClass) { + final InputStream jsonFileInputStream = + BaseDCAEAnalyticsUnitTest.class.getClassLoader().getResourceAsStream(jsonFileLocation); + Assert.assertNotNull("Json File Location must be valid", jsonFileInputStream); + try { + return objectMapper.readValue(jsonFileInputStream, modelClass); + } catch (IOException ex) { + LOG.error("Error while doing assert Json for fileLocation: {}, modelClass: {}, Exception {}", + jsonFileLocation, modelClass, ex); + throw new RuntimeException(ex); + } finally { + try { + jsonFileInputStream.close(); + } catch (IOException e) { + LOG.error("Error while closing input stream at file location: {}", jsonFileLocation); + throw new RuntimeException(e); + } + } + } + + /** + * Deserialize given Json file location to given model class and then validates deserialization by comparing it + * with given expected Object. + * + * @param jsonFileLocation Classpath location of the json file + * @param modelClass Model Class type + * @param expectedJsonObject Expected Json Object + * @param <T> Json Model Type + * @return deserialized actual value if expected Json Object matches deserialized object + */ + public static <T> T assertJsonDeserialization(String jsonFileLocation, Class<T> modelClass, T expectedJsonObject) { + final T actualValue = deserializeJsonFileToModel(jsonFileLocation, modelClass); + assertThat(actualValue, is(expectedJsonObject)); + return actualValue; + } + + /** + * Serialize model to json. + * @param model model + * @return json + * @throws JsonProcessingException when fails to process object + */ + public static String serializeModelToJson(Object model) throws JsonProcessingException { + return objectMapper.writeValueAsString(model); + } + + /** + * Converts given model to json string and compare it with json present at given file location. + * + * @param model Model which needs to be compared + * @param expectedJsonFileLocation Location of file containing expected json string + * + * @return If assertion passes returns the input model + */ + public static <T> T assertJsonSerialization(T model, String expectedJsonFileLocation) { + try { + final String actualModelString = serializeModelToJson(model); + final String expectedModelString = fromStream(expectedJsonFileLocation); + assertJson(expectedModelString, actualModelString); + return model; + } catch (IOException | JSONException ex) { + LOG.error("Error while doing assert Json serialization Assertion: model: {}, " + + "expected Json File Location: {}, Exception {}", model, expectedJsonFileLocation, ex); + throw new RuntimeException(ex); + } + } + + + /** + * Checks both serialization and deserialization. + * </p> + * First checks deserialization and then serialize the deserialized object back to json + * and check if matches the given json file location string + * + * @param jsonFileLocation Classpath location of the json file + * @param modelClass Class type + * @param <T> Json Model Type + * + * @return If assertion passes, returns deserialized object + */ + + public static <T> T assertJsonConversions(String jsonFileLocation, Class<T> modelClass) { + //first check deserialization + final T actualValue = deserializeJsonFileToModel(jsonFileLocation, modelClass); + //then check serialization + assertJsonSerialization(actualValue, jsonFileLocation); + + return actualValue; + } +} |