Java tutorial
/* Copyright 2015 CrushPaper.com. This file is part of CrushPaper. CrushPaper is free software: you can redistribute it and/or modify it under the terms of version 3 of the GNU Affero General Public License as published by the Free Software Foundation. CrushPaper 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 Affero General Public License for more details. You should have received a copy of the GNU Affero General Public License along with CrushPaper. If not, see <http://www.gnu.org/licenses/>. */ package com.crushpaper; import static org.junit.Assert.assertEquals; import static org.junit.Assert.assertTrue; import java.io.IOException; import org.junit.Test; import com.fasterxml.jackson.databind.JsonNode; import com.fasterxml.jackson.databind.ObjectMapper; /** Tests creating a JSON backup for a user from the DB. */ public class DbJsonBackupForUserTest extends DbLogicTestBase { @Test public void test1() { final TestEntrySet before = new TestEntrySet(new TestEntry[] {}); final String expectedJson = "{\n" + "\"entries\": [\n" + "]\n}\n"; final Errors errors = new Errors(); try { final User user = dbLogic.getOrCreateUser("user"); assertTrue(dbLogic.addEntries(before, user, createTime, errors)); final StringBuilder result = new StringBuilder(); dbLogic.backupJsonForUser(user, result); assertEquals(expectedJson, result.toString()); } catch (final IOException e) { assertTrue(false); } } @Test public void test2() { final TestEntrySet before = new TestEntrySet(new TestEntry[] { new TestEntry("1") }); final String expectedJson = "{\n" + "\"entries\": [\n" + "{\n" + "\"note\": \"1\",\n" + "\"modTime\": 1,\n" + "\"createTime\": 1,\n" + "\"id\": \"S3\",\n" + "\"type\": \"root\"\n" + "}\n" + "]\n}\n"; final Errors errors = new Errors(); try { final User user = dbLogic.getOrCreateUser("user"); assertTrue(dbLogic.addEntries(before, user, createTime, errors)); final StringBuilder result = new StringBuilder(); dbLogic.backupJsonForUser(user, result); assertEquals(expectedJson, result.toString()); } catch (final IOException e) { assertTrue(false); } } @Test public void test3() throws IOException { final TestEntrySet before = new TestEntrySet( new TestEntry[] { new TestEntry("1", 1), new TestEntry("2", 2) }); final ObjectMapper mapper = new ObjectMapper(); final JsonNode node1 = mapper.readTree("{\n" + "\"note\": \"1\",\n" + "\"modTime\": 1,\n" + "\"createTime\": 1,\n" + "\"id\": \"S3\",\n" + "\"type\": \"root\"\n" + "}"); final JsonNode node2 = mapper.readTree("{\n" + "\"note\": \"2\",\n" + "\"modTime\": 2,\n" + "\"createTime\": 2,\n" + "\"id\": \"S4\",\n" + "\"type\": \"root\"\n" + "}\n"); final Errors errors = new Errors(); try { final User user = dbLogic.getOrCreateUser("user"); assertTrue(dbLogic.addEntries(before, user, createTime, errors)); dbLogic.commit(); final StringBuilder result = new StringBuilder(); dbLogic.backupJsonForUser(user, result); final JsonNode resultNode = mapper.readTree(result.toString()); assertTrue(resultNode.isObject()); final JsonNode entriesNodes = resultNode.get("entries"); assertTrue(entriesNodes.isArray()); assertEquals(2, entriesNodes.size()); boolean matched1 = false, matched2 = false; for (int i = 0; i < 2; ++i) { final JsonNode obj = entriesNodes.get(i); if (obj.equals(node1)) { matched1 = true; } else if (obj.equals(node2)) { matched2 = true; } } assertTrue(matched1); assertTrue(matched2); } catch (final IOException e) { assertTrue(false); } } @Test public void test4() throws IOException { final TestEntrySet before = new TestEntrySet(new TestEntry[] { new TestEntry("1", new TestEntry[] { new TestEntry("2", 2), new TestEntry("3", 3) }) }); final ObjectMapper mapper = new ObjectMapper(); final JsonNode node1 = mapper .readTree("{\n" + "\"note\": \"3\",\n" + "\"modTime\": 3,\n" + "\"createTime\": 3,\n" + "\"id\": \"S5\",\n" + "\"type\": \"note\",\n" + "\"parentId\": \"S3\"\n" + "}"); final JsonNode node2 = mapper.readTree("{\n" + "\"note\": \"2\",\n" + "\"modTime\": 2,\n" + "\"createTime\": 2,\n" + "\"id\": \"S4\",\n" + "\"type\": \"note\",\n" + "\"parentId\": \"S3\",\n" + "\"nextSiblingId\": \"S5\"\n" + "}"); final JsonNode node3 = mapper.readTree("{\n" + "\"note\": \"1\",\n" + "\"modTime\": 1,\n" + "\"createTime\": 1,\n" + "\"id\": \"S3\",\n" + "\"type\": \"root\"\n" + "}\n"); final Errors errors = new Errors(); try { final User user = dbLogic.getOrCreateUser("user"); assertTrue(dbLogic.addEntries(before, user, createTime, errors)); dbLogic.commit(); final StringBuilder result = new StringBuilder(); dbLogic.backupJsonForUser(user, result); final JsonNode resultNode = mapper.readTree(result.toString()); assertTrue(resultNode.isObject()); final JsonNode entriesNodes = resultNode.get("entries"); assertTrue(entriesNodes.isArray()); assertEquals(3, entriesNodes.size()); boolean matched1 = false, matched2 = false, matched3 = false; for (int i = 0; i < 3; ++i) { final JsonNode obj = entriesNodes.get(i); if (obj.equals(node1)) { matched1 = true; } else if (obj.equals(node2)) { matched2 = true; } else if (obj.equals(node3)) { matched3 = true; } } assertTrue(matched1); assertTrue(matched2); assertTrue(matched3); } catch (final IOException e) { assertTrue(false); } } }