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JsonLdDeserializationTest.java
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JsonLdDeserializationTest.java
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/**
* Copyright (C) 2022 Czech Technical University in Prague
* <p>
* This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public
* License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later
* version.
* <p>
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details. You should have received a copy of the GNU General Public License along with this program. If not, see
* <http://www.gnu.org/licenses/>.
*/
package cz.cvut.kbss.jsonld.jackson.deserialization;
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.DeserializationFeature;
import com.fasterxml.jackson.databind.ObjectMapper;
import cz.cvut.kbss.jsonld.ConfigParam;
import cz.cvut.kbss.jsonld.deserialization.DeserializationContext;
import cz.cvut.kbss.jsonld.deserialization.ValueDeserializer;
import cz.cvut.kbss.jsonld.jackson.JsonLdModule;
import cz.cvut.kbss.jsonld.jackson.environment.Environment;
import cz.cvut.kbss.jsonld.jackson.environment.model.Employee;
import cz.cvut.kbss.jsonld.jackson.environment.model.Organization;
import cz.cvut.kbss.jsonld.jackson.environment.model.Person;
import cz.cvut.kbss.jsonld.jackson.environment.model.User;
import cz.cvut.kbss.jsonld.jackson.serialization.JsonLdSerializationTest;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import java.net.URI;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import static org.junit.jupiter.api.Assertions.*;
import static org.mockito.ArgumentMatchers.any;
import static org.mockito.ArgumentMatchers.anyMap;
import static org.mockito.Mockito.spy;
import static org.mockito.Mockito.verify;
class JsonLdDeserializationTest {
private static final URI HALSEY_URI = URI
.create("http://krizik.felk.cvut.cz/ontologies/jb4jsonld#Catherine+Halsey");
private static final URI LASKY_URI = URI
.create("http://krizik.felk.cvut.cz/ontologies/jb4jsonld#Thomas+Lasky");
private static final URI PALMER_URI = URI
.create("http://krizik.felk.cvut.cz/ontologies/jb4jsonld#Sarah+Palmer");
private static final Map<URI, User> USERS = initUsers();
private static final URI ORG_URI = URI.create("http://krizik.felk.cvut.cz/ontologies/jb4jsonld#UNSC");
private static final String ORG_NAME = "UNSC";
private static final String[] ORG_BRANDS = {"Spartan-II", "Mjolnir IV"};
private ObjectMapper objectMapper;
private JsonLdModule jsonLdModule;
private static Map<URI, User> initUsers() {
final Map<URI, User> map = new HashMap<>();
map.put(HALSEY_URI, new User(HALSEY_URI, "Catherine", "Halsey", "halsey@unsc.org", true));
map.put(LASKY_URI, new User(LASKY_URI, "Thomas", "Lasky", "lasky@unsc.org", false));
map.put(PALMER_URI, new User(PALMER_URI, "Sarah", "Palmer", "palmer@unsc.org", false));
return map;
}
@BeforeEach
void setUp() {
this.objectMapper = new ObjectMapper();
this.jsonLdModule = new JsonLdModule();
objectMapper.registerModule(jsonLdModule);
}
@Test
void testDeserializeInstanceWithDataProperties() throws Exception {
final String input = Environment.readData("objectWithDataProperties.json");
final User result = objectMapper.readValue(input, User.class);
assertNotNull(result);
final User expected = USERS.get(HALSEY_URI);
verifyUserAttributes(expected, result);
}
private void verifyUserAttributes(User expected, User actual) {
assertEquals(expected.getUri(), actual.getUri());
assertEquals(expected.getFirstName(), actual.getFirstName());
assertEquals(expected.getLastName(), actual.getLastName());
assertEquals(expected.getUsername(), actual.getUsername());
assertEquals(expected.getAdmin(), actual.getAdmin());
}
@Test
void testDeserializeInstanceWithSingularObjectProperty() throws Exception {
final String input = Environment.readData("objectWithSingularReference.json");
final Employee result = objectMapper.readValue(input, Employee.class);
verifyUserAttributes(USERS.get(HALSEY_URI), result);
assertNotNull(result.getEmployer());
verifyOrganizationAttributes(result.getEmployer());
}
private void verifyOrganizationAttributes(Organization actual) {
assertEquals(ORG_URI, actual.getUri());
assertEquals(ORG_NAME, actual.getName());
assertNotNull(actual.getDateCreated());
for (String b : ORG_BRANDS) {
assertTrue(actual.getBrands().contains(b));
}
}
@Test
void testDeserializeCollectionOfInstances() throws Exception {
final String input = Environment.readData("collectionOfInstances.json");
final List<Employee> result = objectMapper.readValue(input, new TypeReference<List<Employee>>() {
});
assertNotNull(result);
assertFalse(result.isEmpty());
result.forEach(e -> {
final User expected = USERS.get(e.getUri());
verifyUserAttributes(expected, e);
});
}
@Test
void testSupportForIgnoringUnknownProperties() throws Exception {
objectMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
final String input = Environment.readData("objectWithUnknownProperty.json");
final User result = objectMapper.readValue(input, User.class);
assertNotNull(result);
verifyUserAttributes(USERS.get(HALSEY_URI), result);
}
/**
* @see JsonLdSerializationTest#serializationIgnoresJsonTypeInfoConfiguration()
*/
@Test
void deserializationIgnoresJsonTypeInfo() throws Exception {
final String input = Environment.readData("objectWithSingularReference.json");
final Employee result = objectMapper.readValue(input, Employee.class);
assertNotNull(result);
}
@Test
void deserializationSupportsPolymorphism() throws Exception {
jsonLdModule.configure(ConfigParam.SCAN_PACKAGE, "cz.cvut.kbss.jsonld.jackson.environment.model");
final String input = Environment.readData("objectWithSingularReference.json");
final Person result = objectMapper.readValue(input, Person.class);
assertTrue(result instanceof Employee);
}
@Test
void deserializationSkipsPropertiesMappedToFieldsWithReadOnlyAccess() throws Exception {
final String input = Environment.readData("objectWithReadOnlyProperty.json");
final Organization result = objectMapper.readValue(input, Organization.class);
assertNotNull(result);
assertNull(result.getEmployeeCount());
}
@Test
void deserializationSupportsCustomDeserializers() throws Exception {
final ValueDeserializer<Boolean> deserializer = spy(new CustomDeserializer());
jsonLdModule.registerDeserializer(Boolean.class, deserializer);
final String input = Environment.readData("objectWithDataProperties.json");
final User result = objectMapper.readValue(input, User.class);
assertNotNull(result);
assertNull(result.getAdmin());
verify(deserializer).deserialize(anyMap(), any(DeserializationContext.class));
}
static class CustomDeserializer implements ValueDeserializer<Boolean> {
@Override
public Boolean deserialize(Map<?, ?> map, DeserializationContext<Boolean> deserializationContext) {
return null;
}
}
}