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/*-
* ============LICENSE_START=======================================================
* Copyright (C) 2021 Nordix Foundation.
* ================================================================================
* 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.
*
* SPDX-License-Identifier: Apache-2.0
* ============LICENSE_END=========================================================
*/
package org.onap.policy.distribution.reception.parameters;
import static org.assertj.core.api.Assertions.assertThatThrownBy;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNotNull;
import com.google.gson.GsonBuilder;
import com.google.gson.JsonParser;
import com.google.gson.JsonSyntaxException;
import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import org.junit.jupiter.api.Test;
import org.onap.policy.distribution.reception.testclasses.DummyPolicyDecoderParameterGroup;
/**
* Class for unit testing PolicyDecoderConfigurationParametersJsonAdapter class.
*
* @author Adheli Tavares (adheli.tavares@est.tech)
*
*/
public class TestPolicyDecoderConfigurationParametersJsonAdapter {
@Test
void testDeserialize() throws JsonSyntaxException, IOException {
final var validJsonFile = "src/test/resources/PolicyDecoderConfiguration.json";
final var mockJsonElement = JsonParser.parseString(getJsonValues(validJsonFile));
var gson = new GsonBuilder().registerTypeAdapter(PolicyDecoderConfigurationParameterGroup.class,
new PolicyDecoderConfigurationParametersJsonAdapter()).create();
var result = gson.fromJson(mockJsonElement, PolicyDecoderConfigurationParameterGroup.class);
assertNotNull(result);
assertEquals(result.getClass(), DummyPolicyDecoderParameterGroup.class);
}
@Test
void testDeserialize_shouldThrowExceptionEmptyClassName() throws JsonSyntaxException, IOException {
final var jsonFile = "src/test/resources/EmptyClassName.json";
var expectedErrorMsg = "parameter \"parameterClassName\" value \"\" invalid in JSON file";
validateParsing(jsonFile, expectedErrorMsg);
}
@Test
void testDeserialize_shouldThrowExceptionNullClassName() throws JsonSyntaxException, IOException {
final var jsonFile = "src/test/resources/NullClassName.json";
var expectedErrorMsg = "parameter \"parameterClassName\" value \"null\" invalid in JSON file";
validateParsing(jsonFile, expectedErrorMsg);
}
@Test
void testDeserialize_shouldThrowExceptionWrongClassName() throws JsonSyntaxException, IOException {
final var jsonFile = "src/test/resources/WrongClassName.json";
var expectedErrorMsg = "parameter \"parameterClassName\" value "
+ "\"org.onap.policy.distribution.reception.testclasses.NotExistentClass\", could not find class";
validateParsing(jsonFile, expectedErrorMsg);
}
private void validateParsing(final String jsonFile, String expectedErrorMsg) throws IOException {
final var mockJsonElement = JsonParser.parseString(getJsonValues(jsonFile));
var gson = new GsonBuilder().registerTypeAdapter(PolicyDecoderConfigurationParameterGroup.class,
new PolicyDecoderConfigurationParametersJsonAdapter()).create();
assertThatThrownBy(() -> gson.fromJson(mockJsonElement, PolicyDecoderConfigurationParameterGroup.class))
.isInstanceOf(IllegalArgumentException.class).hasMessage(expectedErrorMsg);
}
private String getJsonValues(String path) throws IOException {
return Files.readString(new File(path).toPath());
}
}
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