Android Open Source - spring-sync Json Patch Test

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The source code is released under:
Apache License
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Java Source Code

/*
 * Copyright 2014 the original author or authors.
 *//ww  w  . j a v  a  2s  .  c  om
 * 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.sync;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import junit.framework.TestCase;

import org.springframework.core.io.ClassPathResource;
import org.springframework.sync.json.JsonPatchMaker;

import com.fasterxml.jackson.core.JsonParseException;
import com.fasterxml.jackson.databind.JsonMappingException;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;

public class JsonPatchTest extends TestCase {

  public void testManySuccessfulOperations() throws Exception {
    // initial Todo list
    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("/org/springframework/sync/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());
  }

  public void testFailureAtBeginning() throws Exception {
    // initial Todo list
    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("/org/springframework/sync/patch-failing-operation-first.json");

    try {
      patch.apply(todos, Todo.class);
      fail();
    }
    catch (PatchException e) {
      assertEquals("Test against path '/5/description' failed.", e.getMessage());
    }

    // nothing should have changed
    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());
  }

  public void testFailureInMiddle() throws Exception {
    // initial Todo list
    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("/org/springframework/sync/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());
    }

    // nothing should have changed
    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());
  }

  private Patch readJsonPatch(String jsonPatchFile) throws IOException,
      JsonParseException, JsonMappingException {
    ClassPathResource resource = new ClassPathResource(jsonPatchFile);
    ObjectMapper mapper = new ObjectMapper();
    JsonNode node = mapper.readValue(resource.getInputStream(), JsonNode.class);
    Patch patch = new JsonPatchMaker().fromJsonNode(node);
    return patch;
  }

}
Java Source Code List
