/*
* Copyright 2014-2017 the original author or authors.
*
* 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.
*/
package org.springframework.data.rest.webmvc.json.patch;
import static org.junit.Assert.*;
import java.io.IOException;
import java.math.BigInteger;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.ExpectedException;
import org.springframework.core.io.ClassPathResource;
import com.fasterxml.jackson.core.JsonParseException;
import com.fasterxml.jackson.databind.JsonMappingException;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
/**
* Unit tests for {@link JsonPatchPatchConverter}.
*
* @author Craig Walls
* @author Oliver Gierke
* @author Mathias Düsterhöft
* @author Oliver Trosien
*/
public class JsonPatchTests {
public @Rule ExpectedException exception = ExpectedException.none();
@Test
public void manySuccessfulOperations() throws Exception {
List<Todo> todos = new ArrayList<Todo>();
todos.add(new Todo(1L, "A", true));
todos.add(new Todo(2L, "B", false));
todos.add(new Todo(3L, "C", false));
todos.add(new Todo(4L, "D", false));
todos.add(new Todo(5L, "E", false));
todos.add(new Todo(6L, "F", false));
Patch patch = readJsonPatch("patch-many-successful-operations.json");
assertEquals(6, patch.size());
List<Todo> patchedTodos = patch.apply(todos, Todo.class);
assertEquals(6, todos.size());
assertTrue(patchedTodos.get(1).isComplete());
assertEquals("C", patchedTodos.get(3).getDescription());
assertEquals("A", patchedTodos.get(4).getDescription());
}
@Test
public void failureAtBeginning() throws Exception {
List<Todo> todos = new ArrayList<Todo>();
todos.add(new Todo(1L, "A", true));
todos.add(new Todo(2L, "B", false));
todos.add(new Todo(3L, "C", false));
todos.add(new Todo(4L, "D", false));
todos.add(new Todo(5L, "E", false));
todos.add(new Todo(6L, "F", false));
Patch patch = readJsonPatch("patch-failing-operation-first.json");
try {
patch.apply(todos, Todo.class);
fail();
} catch (PatchException e) {
assertEquals("Test against path '/5/description' failed.", e.getMessage());
}
assertEquals(6, todos.size());
assertFalse(todos.get(1).isComplete());
assertEquals("D", todos.get(3).getDescription());
assertEquals("E", todos.get(4).getDescription());
assertEquals("F", todos.get(5).getDescription());
}
@Test
public void failureInMiddle() throws Exception {
List<Todo> todos = new ArrayList<Todo>();
todos.add(new Todo(1L, "A", true));
todos.add(new Todo(2L, "B", false));
todos.add(new Todo(3L, "C", false));
todos.add(new Todo(4L, "D", false));
todos.add(new Todo(5L, "E", false));
todos.add(new Todo(6L, "F", false));
Patch patch = readJsonPatch("patch-failing-operation-in-middle.json");
try {
patch.apply(todos, Todo.class);
fail();
} catch (PatchException e) {
assertEquals("Test against path '/5/description' failed.", e.getMessage());
}
assertEquals(6, todos.size());
assertFalse(todos.get(1).isComplete());
assertEquals("D", todos.get(3).getDescription());
assertEquals("E", todos.get(4).getDescription());
assertEquals("F", todos.get(5).getDescription());
}
@Test // DATAREST-889
public void patchArray() throws Exception {
Todo todo = new Todo(1L, "F", false);
Patch patch = readJsonPatch("patch-array.json");
assertEquals(1, patch.size());
Todo patchedTodo = patch.apply(todo, Todo.class);
assertEquals(Arrays.asList("one", "two", "three"), patchedTodo.getItems());
}
@Test // DATAREST-889
public void patchUnknownType() throws Exception {
Todo todo = new Todo();
todo.setAmount(BigInteger.ONE);
exception.expect(PatchException.class);
exception.expectMessage("/amount");
exception.expectMessage("18446744073709551616");
readJsonPatch("patch-biginteger.json");
}
@Test // DATAREST-889
public void failureWithInvalidPatchContent() throws Exception {
Todo todo = new Todo();
todo.setDescription("Description");
Patch patch = readJsonPatch("patch-failing-with-invalid-content.json");
exception.expect(PatchException.class);
exception.expectMessage("content");
exception.expectMessage("blabla");
exception.expectMessage(String.class.toString());
patch.apply(todo, Todo.class);
}
private Patch readJsonPatch(String jsonPatchFile) throws IOException, JsonParseException, JsonMappingException {
ClassPathResource resource = new ClassPathResource(jsonPatchFile, getClass());
JsonNode node = new ObjectMapper().readValue(resource.getInputStream(), JsonNode.class);
Patch patch = new JsonPatchPatchConverter(new ObjectMapper()).convert(node);
return patch;
}
}