feature: Implement Presentation Model Pattern (#1710)
* #415 initial all componets * #415 add src and tests * #415 add diagram * #415 add README * #415 add README * #415 change pom.xml * #415 change pom.xml * #415 change pom.xml * #415 update pom.xml * #415 change some code smell * #415 change some code smell * #415 update test * #415 add javadoc * #415 remove author tag * #415 add lombok @AllArgsConstructor * #415 fix code converge * #415 fix code converge * #415 fix code converge * #415 add javadoc * #415 fix code smell * #415 fix code smell * #415 add log information * #415 remove unused import * #415 add javadoc and more test * #415 modify test * #415 fix checkstyle * #415 remove useless code and add more javadoc and test. * #415 add package-info.java. * #415 add package-info.java. * #415 add more test. * #415 fix code smell. * #415 fix code smell and increase code coverage. * #415 fix code smell. * #415 update README.md * #415 update README.md * #415 make this demo better * #415 satisfy checkstyle * #415 make some field static. * #415 make some fields static. * #415 rename some fields static. * Delete package-info.java Co-authored-by: Subhrodip Mohanta <subhrodipmohanta@gmail.com>
This commit is contained in:
EdisonE3
GitHub
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package com.iluwatar.presentation;
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import lombok.AllArgsConstructor;
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import lombok.Getter;
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import lombok.Setter;
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/**
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*A class used to store the information of album.
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*/
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@Setter
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@Getter
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@AllArgsConstructor
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public class Album {
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/**
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* the title of the album.
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*/
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private String title;
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/**
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* the artist name of the album.
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*/
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private String artist;
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/**
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* is the album classical, true or false.
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*/
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private boolean isClassical;
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/**
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* only when the album is classical,
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* composer can have content.
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*/
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private String composer;
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}
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package com.iluwatar.presentation;
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import lombok.extern.slf4j.Slf4j;
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/**
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* The Presentation model pattern is used to divide the presentation and controlling.
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* This demo is a used to information of some albums with GUI.
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*/
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@Slf4j
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public final class App {
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/**
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* the constructor.
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*/
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private App() {
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}
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/**
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* main method.
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*
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* @param args args
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*/
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public static void main(final String[] args) {
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var view = new View();
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view.createView();
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}
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}
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package com.iluwatar.presentation;
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import java.util.ArrayList;
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import java.util.List;
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import lombok.Getter;
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import lombok.extern.slf4j.Slf4j;
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/**
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* a class used to deal with albums.
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*
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*/
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@Slf4j
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@Getter
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public class DisplayedAlbums {
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/**
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* albums a list of albums.
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*/
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private final List<Album> albums;
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/**
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* a constructor method.
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*/
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public DisplayedAlbums() {
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this.albums = new ArrayList<>();
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}
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/**
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* a method used to add a new album to album list.
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*
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* @param title the title of the album.
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* @param artist the artist name of the album.
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* @param isClassical is the album classical, true or false.
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* @param composer only when the album is classical,
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* composer can have content.
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*/
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public void addAlbums(final String title,
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final String artist, final boolean isClassical,
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final String composer) {
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if (isClassical) {
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this.albums.add(new Album(title, artist, true, composer));
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} else {
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this.albums.add(new Album(title, artist, false, ""));
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}
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}
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}
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package com.iluwatar.presentation;
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import lombok.extern.slf4j.Slf4j;
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/**
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* The class between view and albums, it is used to control the data.
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*/
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@Slf4j
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public class PresentationModel {
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/**
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* the data of all albums that will be shown.
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*/
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private final DisplayedAlbums data;
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/**
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* the no of selected album.
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*/
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private int selectedAlbumNumber;
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/**
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* the selected album.
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*/
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private Album selectedAlbum;
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/**
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* Generates a set of data for testing.
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*
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* @return a instance of DsAlbum which store the data.
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*/
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public static DisplayedAlbums albumDataSet() {
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var titleList = new String[]{"HQ", "The Rough Dancer and Cyclical Night",
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"The Black Light", "Symphony No.5"};
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var artistList = new String[]{"Roy Harper", "Astor Piazzola",
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"The Black Light", "CBSO"};
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var isClassicalList = new boolean[]{false, false, false, true};
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var composerList = new String[]{null, null, null, "Sibelius"};
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var result = new DisplayedAlbums();
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for (var i = 1; i <= titleList.length; i++) {
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result.addAlbums(titleList[i - 1], artistList[i - 1],
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isClassicalList[i - 1], composerList[i - 1]);
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}
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return result;
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}
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/**
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* constructor method.
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*
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* @param dataOfAlbums the data of all the albums
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*/
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public PresentationModel(final DisplayedAlbums dataOfAlbums) {
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this.data = dataOfAlbums;
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this.selectedAlbumNumber = 1;
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this.selectedAlbum = this.data.getAlbums().get(0);
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}
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/**
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* Changes the value of selectedAlbumNumber.
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*
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* @param albumNumber the number of album which is shown on the view.
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*/
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public void setSelectedAlbumNumber(final int albumNumber) {
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LOGGER.info("Change select number from {} to {}",
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this.selectedAlbumNumber, albumNumber);
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this.selectedAlbumNumber = albumNumber;
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this.selectedAlbum = data.getAlbums().get(this.selectedAlbumNumber - 1);
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}
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/**
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* get the title of selected album.
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*
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* @return the tile of selected album.
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*/
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public String getTitle() {
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return selectedAlbum.getTitle();
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}
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/**
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* set the title of selected album.
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*
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* @param value the title which user want to user.
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*/
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public void setTitle(final String value) {
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LOGGER.info("Change album title from {} to {}",
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selectedAlbum.getTitle(), value);
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selectedAlbum.setTitle(value);
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}
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/**
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* get the artist of selected album.
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*
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* @return the artist of selected album.
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*/
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public String getArtist() {
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return selectedAlbum.getArtist();
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}
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/**
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* set the name of artist.
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*
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* @param value the name want artist to be.
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*/
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public void setArtist(final String value) {
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LOGGER.info("Change album artist from {} to {}",
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selectedAlbum.getArtist(), value);
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selectedAlbum.setArtist(value);
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}
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/**
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* Gets a boolean value which represents whether the album is classical.
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*
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* @return is the album classical.
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*/
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public boolean getIsClassical() {
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return selectedAlbum.isClassical();
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}
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/**
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* set the isClassical of album.
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*
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* @param value is the album classical.
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*/
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public void setIsClassical(final boolean value) {
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LOGGER.info("Change album isClassical from {} to {}",
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selectedAlbum.isClassical(), value);
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selectedAlbum.setClassical(value);
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}
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/**
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* get is classical of the selected album.
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*
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* @return is the album classical.
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*/
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public String getComposer() {
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return selectedAlbum.isClassical() ? selectedAlbum.getComposer() : "";
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}
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/**
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* Sets the name of composer when the album is classical.
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*
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* @param value the name of composer.
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*/
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public void setComposer(final String value) {
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if (selectedAlbum.isClassical()) {
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LOGGER.info("Change album composer from {} to {}",
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selectedAlbum.getComposer(), value);
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selectedAlbum.setComposer(value);
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} else {
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LOGGER.info("Composer can not be changed");
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}
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}
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/**
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* Gets a list of albums.
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*
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* @return the names of all the albums.
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*/
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public String[] getAlbumList() {
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var result = new String[data.getAlbums().size()];
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for (var i = 0; i < result.length; i++) {
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result[i] = data.getAlbums().get(i).getTitle();
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}
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return result;
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}
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}
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167
presentation/src/main/java/com/iluwatar/presentation/View.java
Normal file
167
presentation/src/main/java/com/iluwatar/presentation/View.java
Normal file
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package com.iluwatar.presentation;
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import java.awt.TextField;
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import java.awt.event.MouseAdapter;
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import java.awt.event.MouseEvent;
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import javax.swing.Box;
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import javax.swing.JButton;
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import javax.swing.JCheckBox;
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import javax.swing.JFrame;
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import javax.swing.JList;
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import lombok.Getter;
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import lombok.extern.slf4j.Slf4j;
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/**
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* Generates the GUI of albums.
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*/
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@Getter
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@Slf4j
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public class View {
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/**
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* the model that controls this view.
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*/
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private final PresentationModel model;
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/**
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* the filed to show and modify title.
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*/
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private TextField txtTitle;
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/**
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* the filed to show and modify the name of artist.
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*/
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private TextField txtArtist;
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/**
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* the checkbox for is classical.
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*/
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private JCheckBox chkClassical;
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/**
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* the filed to show and modify composer.
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*/
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private TextField txtComposer;
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/**
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* a list to show all the name of album.
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*/
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private JList<String> albumList;
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/**
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* a button to apply of all the change.
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*/
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private JButton apply;
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/**
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* roll back the change.
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*/
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private JButton cancel;
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/**
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* the value of the text field size.
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*/
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static final int WIDTH_TXT = 200;
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static final int HEIGHT_TXT = 50;
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/**
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* the value of the GUI size and location.
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*/
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static final int LOCATION_X = 200;
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static final int LOCATION_Y = 200;
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static final int WIDTH = 500;
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static final int HEIGHT = 300;
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/**
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* constructor method.
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*/
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public View() {
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model = new PresentationModel(PresentationModel.albumDataSet());
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}
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/**
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* save the data to PresentationModel.
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*/
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public void saveToPMod() {
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LOGGER.info("Save data to PresentationModel");
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model.setArtist(txtArtist.getText());
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model.setTitle(txtTitle.getText());
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model.setIsClassical(chkClassical.isSelected());
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model.setComposer(txtComposer.getText());
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}
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/**
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* load the data from PresentationModel.
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*/
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public void loadFromPMod() {
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LOGGER.info("Load data from PresentationModel");
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txtArtist.setText(model.getArtist());
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txtTitle.setText(model.getTitle());
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chkClassical.setSelected(model.getIsClassical());
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txtComposer.setEditable(model.getIsClassical());
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txtComposer.setText(model.getComposer());
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}
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/**
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* initialize the GUI.
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*/
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public void createView() {
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var frame = new JFrame("Album");
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var b1 = Box.createHorizontalBox();
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frame.add(b1);
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albumList = new JList<>(model.getAlbumList());
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albumList.addMouseListener(new MouseAdapter() {
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@Override
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public void mouseClicked(final MouseEvent e) {
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model.setSelectedAlbumNumber(albumList.getSelectedIndex() + 1);
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loadFromPMod();
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}
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});
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b1.add(albumList);
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var b2 = Box.createVerticalBox();
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b1.add(b2);
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txtArtist = new TextField();
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txtTitle = new TextField();
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txtArtist.setSize(WIDTH_TXT, HEIGHT_TXT);
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txtTitle.setSize(WIDTH_TXT, HEIGHT_TXT);
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chkClassical = new JCheckBox();
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txtComposer = new TextField();
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chkClassical.addActionListener(itemEvent -> {
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txtComposer.setEditable(chkClassical.isSelected());
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if (!chkClassical.isSelected()) {
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txtComposer.setText("");
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}
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});
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txtComposer.setSize(WIDTH_TXT, HEIGHT_TXT);
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txtComposer.setEditable(model.getIsClassical());
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apply = new JButton("Apply");
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apply.addMouseListener(new MouseAdapter() {
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@Override
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public void mouseClicked(final MouseEvent e) {
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saveToPMod();
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loadFromPMod();
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}
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});
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cancel = new JButton("Cancel");
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cancel.addMouseListener(new MouseAdapter() {
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@Override
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public void mouseClicked(final MouseEvent e) {
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loadFromPMod();
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}
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});
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b2.add(txtArtist);
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b2.add(txtTitle);
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b2.add(chkClassical);
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b2.add(txtComposer);
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b2.add(apply);
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b2.add(cancel);
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frame.setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
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frame.setBounds(LOCATION_X, LOCATION_Y, WIDTH, HEIGHT);
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frame.setVisible(true);
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}
|
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}
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@@ -0,0 +1,37 @@
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package com.iluwatar.presentation;
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import org.junit.jupiter.api.Test;
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import static org.junit.jupiter.api.Assertions.assertEquals;
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import static org.junit.jupiter.api.Assertions.assertTrue;
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class AlbumTest {
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@Test
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void testSetTitle(){
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Album album = new Album("a", "b", false, "");
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album.setTitle("b");
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assertEquals("b", album.getTitle());
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}
|
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|
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@Test
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void testSetArtist(){
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Album album = new Album("a", "b", false, "");
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album.setArtist("c");
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assertEquals("c", album.getArtist());
|
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}
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|
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@Test
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void testSetClassical(){
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Album album = new Album("a", "b", false, "");
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album.setClassical(true);
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assertTrue(album.isClassical());
|
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}
|
||||
|
||||
@Test
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||||
void testSetComposer(){
|
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Album album = new Album("a", "b", false, "");
|
||||
album.setClassical(true);
|
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album.setComposer("w");
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assertEquals("w", album.getComposer());
|
||||
}
|
||||
}
|
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@@ -0,0 +1,42 @@
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/*
|
||||
* The MIT License
|
||||
* Copyright © 2014-2021 Ilkka Seppälä
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
* of this software and associated documentation files (the "Software"), to deal
|
||||
* in the Software without restriction, including without limitation the rights
|
||||
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
* copies of the Software, and to permit persons to whom the Software is
|
||||
* furnished to do so, subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included in
|
||||
* all copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||
* THE SOFTWARE.
|
||||
*/
|
||||
|
||||
package com.iluwatar.presentation;
|
||||
|
||||
import org.junit.jupiter.api.Test;
|
||||
|
||||
import static org.junit.jupiter.api.Assertions.assertDoesNotThrow;
|
||||
|
||||
/**
|
||||
* Issue: Add at least one assertion to this test case.
|
||||
*
|
||||
* Solution: Inserted assertion to check whether the execution of the main method in {@link App}
|
||||
* throws an exception.
|
||||
*/
|
||||
class AppTest {
|
||||
|
||||
@Test
|
||||
void shouldExecuteApplicationWithoutException() {
|
||||
assertDoesNotThrow(() -> App.main(new String[]{}));
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,22 @@
|
||||
package com.iluwatar.presentation;
|
||||
|
||||
import org.junit.jupiter.api.Test;
|
||||
|
||||
import static org.junit.jupiter.api.Assertions.assertEquals;
|
||||
|
||||
class DisplayedAlbumsTest {
|
||||
@Test
|
||||
void testAdd_true(){
|
||||
DisplayedAlbums displayedAlbums = new DisplayedAlbums();
|
||||
displayedAlbums.addAlbums("title", "artist", true, "composer");
|
||||
assertEquals("composer", displayedAlbums.getAlbums().get(0).getComposer());
|
||||
|
||||
}
|
||||
|
||||
@Test
|
||||
void testAdd_false(){
|
||||
DisplayedAlbums displayedAlbums = new DisplayedAlbums();
|
||||
displayedAlbums.addAlbums("title", "artist", false, "composer");
|
||||
assertEquals("", displayedAlbums.getAlbums().get(0).getComposer());
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,117 @@
|
||||
/*
|
||||
* The MIT License
|
||||
* Copyright © 2014-2021 Ilkka Seppälä
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
* of this software and associated documentation files (the "Software"), to deal
|
||||
* in the Software without restriction, including without limitation the rights
|
||||
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
* copies of the Software, and to permit persons to whom the Software is
|
||||
* furnished to do so, subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice shall be included in
|
||||
* all copies or substantial portions of the Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||
* THE SOFTWARE.
|
||||
*/
|
||||
|
||||
package com.iluwatar.presentation;
|
||||
|
||||
import org.junit.jupiter.api.Test;
|
||||
|
||||
import java.util.Arrays;
|
||||
|
||||
import static org.junit.jupiter.api.Assertions.assertEquals;
|
||||
import static org.junit.jupiter.api.Assertions.assertTrue;
|
||||
|
||||
class PresentationTest {
|
||||
String[] albumList = {"HQ", "The Rough Dancer and Cyclical Night", "The Black Light", "Symphony No.5"};
|
||||
|
||||
@Test
|
||||
void testCreateAlbumList() {
|
||||
PresentationModel model = new PresentationModel(PresentationModel.albumDataSet());
|
||||
String[] list = model.getAlbumList();
|
||||
assertEquals(Arrays.toString(albumList), Arrays.toString(list));
|
||||
}
|
||||
|
||||
@Test
|
||||
void testSetSelectedAlbumNumber_1() {
|
||||
PresentationModel model = new PresentationModel(PresentationModel.albumDataSet());
|
||||
final int selectId = 2;
|
||||
model.setSelectedAlbumNumber(selectId);
|
||||
assertEquals(albumList[selectId - 1], model.getTitle());
|
||||
}
|
||||
|
||||
@Test
|
||||
void testSetSelectedAlbumNumber_2() {
|
||||
PresentationModel model = new PresentationModel(PresentationModel.albumDataSet());
|
||||
final int selectId = 4;
|
||||
model.setSelectedAlbumNumber(selectId);
|
||||
assertEquals(albumList[selectId - 1], model.getTitle());
|
||||
}
|
||||
|
||||
@Test
|
||||
void testSetTitle_1() {
|
||||
PresentationModel model = new PresentationModel(PresentationModel.albumDataSet());
|
||||
String testTitle = "TestTile";
|
||||
model.setTitle(testTitle);
|
||||
assertEquals(testTitle, model.getTitle());
|
||||
}
|
||||
|
||||
@Test
|
||||
void testSetTitle_2() {
|
||||
PresentationModel model = new PresentationModel(PresentationModel.albumDataSet());
|
||||
String testTitle = "";
|
||||
model.setTitle(testTitle);
|
||||
assertEquals(testTitle, model.getTitle());
|
||||
}
|
||||
|
||||
@Test
|
||||
void testSetArtist_1() {
|
||||
PresentationModel model = new PresentationModel(PresentationModel.albumDataSet());
|
||||
String testArtist = "TestArtist";
|
||||
model.setArtist(testArtist);
|
||||
assertEquals(testArtist, model.getArtist());
|
||||
}
|
||||
|
||||
@Test
|
||||
void testSetArtist_2() {
|
||||
PresentationModel model = new PresentationModel(PresentationModel.albumDataSet());
|
||||
String testArtist = "";
|
||||
model.setArtist(testArtist);
|
||||
assertEquals(testArtist, model.getArtist());
|
||||
}
|
||||
|
||||
@Test
|
||||
void testSetIsClassical() {
|
||||
PresentationModel model = new PresentationModel(PresentationModel.albumDataSet());
|
||||
model.setIsClassical(true);
|
||||
assertTrue(model.getIsClassical());
|
||||
}
|
||||
|
||||
@Test
|
||||
void testSetComposer_false() {
|
||||
PresentationModel model = new PresentationModel(PresentationModel.albumDataSet());
|
||||
String testComposer = "TestComposer";
|
||||
|
||||
model.setIsClassical(false);
|
||||
model.setComposer(testComposer);
|
||||
assertEquals("", model.getComposer());
|
||||
}
|
||||
|
||||
@Test
|
||||
void testSetComposer_true() {
|
||||
PresentationModel model = new PresentationModel(PresentationModel.albumDataSet());
|
||||
String testComposer = "TestComposer";
|
||||
|
||||
model.setIsClassical(true);
|
||||
model.setComposer(testComposer);
|
||||
assertEquals(testComposer, model.getComposer());
|
||||
}
|
||||
}
|
||||
@@ -0,0 +1,55 @@
|
||||
package com.iluwatar.presentation;
|
||||
|
||||
import org.junit.jupiter.api.Test;
|
||||
import static org.junit.jupiter.api.Assertions.assertEquals;
|
||||
import static org.junit.jupiter.api.Assertions.assertTrue;
|
||||
|
||||
class ViewTest {
|
||||
String[] albumList = {"HQ", "The Rough Dancer and Cyclical Night", "The Black Light", "Symphony No.5"};
|
||||
|
||||
@Test
|
||||
void testSave_setArtistAndTitle(){
|
||||
View view = new View();
|
||||
view.createView();
|
||||
String testTitle = "testTitle";
|
||||
String testArtist = "testArtist";
|
||||
view.getTxtArtist().setText(testArtist);
|
||||
view.getTxtTitle().setText(testTitle);
|
||||
view.saveToPMod();
|
||||
view.loadFromPMod();
|
||||
assertEquals(testTitle, view.getModel().getTitle());
|
||||
assertEquals(testArtist, view.getModel().getArtist());
|
||||
}
|
||||
|
||||
@Test
|
||||
void testSave_setClassicalAndComposer(){
|
||||
View view = new View();
|
||||
view.createView();
|
||||
boolean isClassical = true;
|
||||
String testComposer = "testComposer";
|
||||
view.getChkClassical().setSelected(isClassical);
|
||||
view.getTxtComposer().setText(testComposer);
|
||||
view.saveToPMod();
|
||||
view.loadFromPMod();
|
||||
assertTrue(view.getModel().getIsClassical());
|
||||
assertEquals(testComposer, view.getModel().getComposer());
|
||||
}
|
||||
|
||||
@Test
|
||||
void testLoad_1(){
|
||||
View view = new View();
|
||||
view.createView();
|
||||
view.getModel().setSelectedAlbumNumber(2);
|
||||
view.loadFromPMod();
|
||||
assertEquals(albumList[1], view.getModel().getTitle());
|
||||
}
|
||||
|
||||
@Test
|
||||
void testLoad_2(){
|
||||
View view = new View();
|
||||
view.createView();
|
||||
view.getModel().setSelectedAlbumNumber(4);
|
||||
view.loadFromPMod();
|
||||
assertEquals(albumList[3], view.getModel().getTitle());
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user