274 lines
8.3 KiB
Java
274 lines
8.3 KiB
Java
/*
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* The MIT License
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* Copyright © 2014-2019 Ilkka Seppälä
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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package com.ashishtrivedi16.transactionscript;
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import org.h2.jdbcx.JdbcDataSource;
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import org.junit.jupiter.api.AfterEach;
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import org.junit.jupiter.api.BeforeEach;
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import org.junit.jupiter.api.Nested;
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import org.junit.jupiter.api.Test;
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import org.mockito.Mockito;
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import javax.sql.DataSource;
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import java.sql.Connection;
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import java.sql.DriverManager;
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import java.sql.SQLException;
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import static org.junit.jupiter.api.Assertions.*;
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import static org.junit.jupiter.api.Assumptions.assumeTrue;
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import static org.mockito.Mockito.*;
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/**
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* Tests {@link HotelDaoImpl}.
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*/
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public class HotelDaoImplTest {
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private static final String DB_URL = "jdbc:h2:~/test";
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private HotelDaoImpl dao;
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private Room existingRoom = new Room(1, "Single", 50, false);
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/**
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* Creates rooms schema.
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*
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* @throws SQLException if there is any error while creating schema.
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*/
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@BeforeEach
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public void createSchema() throws SQLException {
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try (var connection = DriverManager.getConnection(DB_URL);
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var statement = connection.createStatement()) {
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statement.execute(RoomSchemaSql.DELETE_SCHEMA_SQL);
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statement.execute(RoomSchemaSql.CREATE_SCHEMA_SQL);
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}
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}
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/**
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* Represents the scenario where DB connectivity is present.
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*/
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@Nested
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public class ConnectionSuccess {
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/**
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* Setup for connection success scenario.
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*
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* @throws Exception if any error occurs.
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*/
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@BeforeEach
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public void setUp() throws Exception {
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var dataSource = new JdbcDataSource();
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dataSource.setURL(DB_URL);
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dao = new HotelDaoImpl(dataSource);
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var result = dao.add(existingRoom);
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assertTrue(result);
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}
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/**
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* Represents the scenario when DAO operations are being performed on a non existing room.
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*/
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@Nested
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public class NonExistingRoom {
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@Test
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public void addingShouldResultInSuccess() throws Exception {
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try (var allRooms = dao.getAll()) {
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assumeTrue(allRooms.count() == 1);
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}
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final var nonExistingRoom = new Room(2, "Double", 80, false);
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var result = dao.add(nonExistingRoom);
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assertTrue(result);
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assertRoomCountIs(2);
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assertEquals(nonExistingRoom, dao.getById(nonExistingRoom.getId()).get());
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}
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@Test
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public void deletionShouldBeFailureAndNotAffectExistingRooms() throws Exception {
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final var nonExistingRoom = new Room(2, "Double", 80, false);
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var result = dao.delete(nonExistingRoom);
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assertFalse(result);
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assertRoomCountIs(1);
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}
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@Test
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public void updationShouldBeFailureAndNotAffectExistingRooms() throws Exception {
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final var nonExistingId = getNonExistingRoomId();
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final var newRoomType = "Double";
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final var newPrice = 80;
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final var room = new Room(nonExistingId, newRoomType, newPrice, false);
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var result = dao.update(room);
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assertFalse(result);
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assertFalse(dao.getById(nonExistingId).isPresent());
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}
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@Test
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public void retrieveShouldReturnNoRoom() throws Exception {
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assertFalse(dao.getById(getNonExistingRoomId()).isPresent());
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}
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}
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/**
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* Represents a scenario where DAO operations are being performed on an already existing
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* room.
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*/
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@Nested
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public class ExistingRoom {
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@Test
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public void addingShouldResultInFailureAndNotAffectExistingRooms() throws Exception {
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var existingRoom = new Room(1, "Single", 50, false);
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var result = dao.add(existingRoom);
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assertFalse(result);
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assertRoomCountIs(1);
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assertEquals(existingRoom, dao.getById(existingRoom.getId()).get());
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}
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@Test
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public void deletionShouldBeSuccessAndRoomShouldBeNonAccessible() throws Exception {
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var result = dao.delete(existingRoom);
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assertTrue(result);
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assertRoomCountIs(0);
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assertFalse(dao.getById(existingRoom.getId()).isPresent());
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}
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@Test
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public void updationShouldBeSuccessAndAccessingTheSameRoomShouldReturnUpdatedInformation() throws
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Exception {
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final var newRoomType = "Double";
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final var newPrice = 80;
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final var newBookingStatus = false;
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final var Room = new Room(existingRoom.getId(), newRoomType, newPrice, newBookingStatus);
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var result = dao.update(Room);
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assertTrue(result);
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final var room = dao.getById(existingRoom.getId()).get();
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assertEquals(newRoomType, room.getRoomType());
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assertEquals(newPrice, room.getPrice());
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assertEquals(newBookingStatus, room.isBooked());
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}
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}
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}
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/**
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* Represents a scenario where DB connectivity is not present due to network issue, or DB service
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* unavailable.
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*/
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@Nested
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public class ConnectivityIssue {
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private static final String EXCEPTION_CAUSE = "Connection not available";
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/**
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* setup a connection failure scenario.
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*
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* @throws SQLException if any error occurs.
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*/
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@BeforeEach
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public void setUp() throws SQLException {
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dao = new HotelDaoImpl(mockedDatasource());
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}
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private DataSource mockedDatasource() throws SQLException {
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var mockedDataSource = mock(DataSource.class);
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var mockedConnection = mock(Connection.class);
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var exception = new SQLException(EXCEPTION_CAUSE);
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doThrow(exception).when(mockedConnection).prepareStatement(Mockito.anyString());
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doReturn(mockedConnection).when(mockedDataSource).getConnection();
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return mockedDataSource;
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}
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@Test
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public void addingARoomFailsWithExceptionAsFeedbackToClient() {
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assertThrows(Exception.class, () -> {
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dao.add(new Room(2, "Double", 80, false));
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});
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}
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@Test
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public void deletingARoomFailsWithExceptionAsFeedbackToTheClient() {
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assertThrows(Exception.class, () -> {
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dao.delete(existingRoom);
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});
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}
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@Test
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public void updatingARoomFailsWithFeedbackToTheClient() {
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final var newRoomType = "Double";
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final var newPrice = 80;
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final var newBookingStatus = false;
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assertThrows(Exception.class, () -> {
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dao.update(new Room(existingRoom.getId(), newRoomType, newPrice, newBookingStatus));
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});
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}
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@Test
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public void retrievingARoomByIdFailsWithExceptionAsFeedbackToClient() {
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assertThrows(Exception.class, () -> {
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dao.getById(existingRoom.getId());
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});
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}
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@Test
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public void retrievingAllRoomsFailsWithExceptionAsFeedbackToClient() {
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assertThrows(Exception.class, () -> {
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dao.getAll();
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});
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}
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}
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/**
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* Delete room schema for fresh setup per test.
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*
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* @throws SQLException if any error occurs.
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*/
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@AfterEach
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public void deleteSchema() throws SQLException {
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try (var connection = DriverManager.getConnection(DB_URL);
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var statement = connection.createStatement()) {
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statement.execute(RoomSchemaSql.DELETE_SCHEMA_SQL);
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}
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}
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private void assertRoomCountIs(int count) throws Exception {
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try (var allRooms = dao.getAll()) {
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assertEquals(count, allRooms.count());
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}
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}
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/**
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* An arbitrary number which does not correspond to an active Room id.
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*
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* @return an int of a room id which doesn't exist
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*/
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private int getNonExistingRoomId() {
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return 999;
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}
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}
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