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BAEL-4174: Java Modularity and Unit Testing (#13805) 

* feat: Added two main modules

* feat: Renamed test module

* feat: Added scripts for compiling library modules

* feat: Added scripts for running core module

* feat: Added scripts for running test module

* fix: Fixed module name

* fix: Removed unnecessary module imports

* feat: Added script for running tests with patch

* fix: Remove unnecessary module path imports

* feat: Script for simple classpath tests

* fix: Updated output directory

* fix: Updated output directory for test compilation

* fix: Replace maven repository with local lib folder

* feat: Add lib folder

* feat: Update the scripts

* fix: Remove pom from test module

* fix: Update core pom dependencies

* fix: Remove test module from a parent pom

* fix: Removed jars and added a script

* fix: Fix a script

* fix: Fix pom conflict
This commit is contained in:
Eugene Kovko 2023-04-13 16:51:31 +02:00 committed by GitHub
parent fae3e80186
commit c255eb13c1
20 changed files with 338 additions and 0 deletions
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2
core-java-modules/core-java-9-jigsaw/compile-library-core-module.sh Normal file
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#!/usr/bin/env bash
javac -d mods/com.baeldung.library.core $(find library-core/src/main -name "*.java")

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core-java-modules/core-java-9-jigsaw/compile-library-core-tests.sh Normal file
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#!/usr/bin/env bash
javac --class-path outDir/library-core/:\
libs/junit-jupiter-engine-5.9.2.jar:\
libs/junit-platform-engine-1.9.2.jar:\
libs/apiguardian-api-1.1.2.jar:\
libs/junit-jupiter-params-5.9.2.jar:\
libs/junit-jupiter-api-5.9.2.jar:\
libs/opentest4j-1.2.0.jar:\
libs/junit-platform-commons-1.9.2.jar \
-d outDir/library-test library-core/src/test/java/com/baeldung/library/core/LibraryUnitTest.java

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core-java-modules/core-java-9-jigsaw/compile-library-core-with-tests.sh Normal file
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#!/usr/bin/env bash
javac --class-path libs/junit-jupiter-engine-5.9.2.jar:\
libs/junit-platform-engine-1.9.2.jar:\
libs/apiguardian-api-1.1.2.jar:\
libs/junit-jupiter-params-5.9.2.jar:\
libs/junit-jupiter-api-5.9.2.jar:\
libs/opentest4j-1.2.0.jar:\
libs/junit-platform-commons-1.9.2.jar \
-d outDir/library-core \
library-core/src/main/java/com/baeldung/library/core/Book.java \
library-core/src/main/java/com/baeldung/library/core/Library.java \
library-core/src/main/java/com/baeldung/library/core/Main.java \
library-core/src/test/java/com/baeldung/library/core/LibraryUnitTest.java

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core-java-modules/core-java-9-jigsaw/compile-library-core.sh Normal file
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#!/usr/bin/env bash
javac --class-path libs/junit-jupiter-engine-5.9.2.jar:\
libs/junit-platform-engine-1.9.2.jar:\
libs/apiguardian-api-1.1.2.jar:\
libs/junit-jupiter-params-5.9.2.jar:\
libs/junit-jupiter-api-5.9.2.jar:\
libs/opentest4j-1.2.0.jar:\
libs/junit-platform-commons-1.9.2.jar \
-d outDir/library-core \
library-core/src/main/java/com/baeldung/library/core/Book.java \
library-core/src/main/java/com/baeldung/library/core/Library.java \
library-core/src/main/java/com/baeldung/library/core/Main.java

2
core-java-modules/core-java-9-jigsaw/compile-library-test-module.sh Normal file
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#!/usr/bin/env bash
javac --module-path mods:libs -d mods/com.baeldung.library.test $(find library-test/src/test -name "*.java")

10
core-java-modules/core-java-9-jigsaw/download-junit-dependencies.sh Normal file
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#!/usr/bin/env bash
wget -P libs/ https://repo1.maven.org/maven2/org/apiguardian/apiguardian-api/1.1.2/apiguardian-api-1.1.2.jar /
wget -P libs/ https://repo1.maven.org/maven2/org/opentest4j/opentest4j/1.2.0/opentest4j-1.2.0.jar /
wget -P libs/ https://repo1.maven.org/maven2/org/junit/platform/junit-platform-commons/1.9.2/junit-platform-commons-1.9.2.jar /
wget -P libs/ https://repo1.maven.org/maven2/org/junit/platform/junit-platform-engine/1.9.2/junit-platform-engine-1.9.2.jar /
wget -P libs/ https://repo1.maven.org/maven2/org/junit/platform/junit-platform-reporting/1.9.2/junit-platform-reporting-1.9.2.jar /
wget -P libs/ https://repo1.maven.org/maven2/org/junit/platform/junit-platform-console/1.9.2/junit-platform-console-1.9.2.jar /
wget -P libs/ https://repo1.maven.org/maven2/org/junit/platform/junit-platform-launcher/1.9.2/junit-platform-launcher-1.9.2.jar /
wget -P libs/ https://repo1.maven.org/maven2/org/junit/jupiter/junit-jupiter-engine/5.9.2/junit-jupiter-engine-5.9.2.jar /
wget -P libs/ https://repo1.maven.org/maven2/org/junit/jupiter/junit-jupiter-params/5.9.2/junit-jupiter-params-5.9.2.jar

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core-java-modules/core-java-9-jigsaw/library-core/pom.xml Normal file
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<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>com.baeldung</groupId>
<artifactId>core-java-9-jigsaw</artifactId>
<version>0.2-SNAPSHOT</version>
</parent>
<artifactId>library-core</artifactId>
<properties>
<maven.compiler.source>19</maven.compiler.source>
<maven.compiler.target>19</maven.compiler.target>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-api</artifactId>
<version>5.9.2</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-engine</artifactId>
<version>5.9.2</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.1</version>
<configuration>
<release>9</release>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>3.0.0-M5</version>
<configuration>
<useModulePath>false</useModulePath>
</configuration>
</plugin>
</plugins>
</build>
</project>

52
core-java-modules/core-java-9-jigsaw/library-core/src/main/java/com/baeldung/library/core/Book.java Normal file
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package com.baeldung.library.core;
import java.util.Objects;
public class Book {
private String title;
private String author;
public Book(String title, String author) {
this.title = title;
this.author = author;
}
public String getTitle() {
return title;
}
public String getAuthor() {
return author;
}
@Override
public String toString() {
return "Book [title=" + title + ", author=" + author + "]";
}
@Override
public boolean equals(final Object o) {
if (this == o) {
return true;
}
if (o == null || getClass() != o.getClass()) {
return false;
}
final Book book = (Book) o;
if (!Objects.equals(title, book.title)) {
return false;
}
return Objects.equals(author, book.author);
}
@Override
public int hashCode() {
int result = title != null ? title.hashCode() : 0;
result = 31 * result + (author != null ? author.hashCode() : 0);
return result;
}
}

25
core-java-modules/core-java-9-jigsaw/library-core/src/main/java/com/baeldung/library/core/Library.java Normal file
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package com.baeldung.library.core;
import java.util.ArrayList;
import java.util.List;
public class Library {
private List<Book> books = new ArrayList<>();
public void addBook(Book book) {
books.add(book);
}
public List<Book> getBooks() {
return books;
}
void removeBook(Book book) {
books.remove(book);
}
protected void removeBookByAuthor(String author) {
books.removeIf(book -> book.getAuthor().equals(author));
}
}

16
core-java-modules/core-java-9-jigsaw/library-core/src/main/java/com/baeldung/library/core/Main.java Normal file
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package com.baeldung.library.core;
public class Main {
public static void main(String[] args) {
Library library = new Library();
library.addBook(new Book("The Lord of the Rings", "J.R.R. Tolkien"));
library.addBook(new Book("The Hobbit", "J.R.R. Tolkien"));
library.addBook(new Book("The Silmarillion", "J.R.R. Tolkien"));
library.addBook(new Book("The Chronicles of Narnia", "C.S. Lewis"));
library.addBook(new Book("The Lion, the Witch and the Wardrobe", "C.S. Lewis"));
System.out.println("Welcome to our library!");
System.out.println("We have the following books:");
library.getBooks().forEach(System.out::println);
}
}

3
core-java-modules/core-java-9-jigsaw/library-core/src/main/java/module-info.java Normal file
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module com.baeldung.library.core {
exports com.baeldung.library.core;
}

47
core-java-modules/core-java-9-jigsaw/library-core/src/test/java/com/baeldung/library/core/LibraryUnitTest.java Normal file
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package com.baeldung.library.core;
import static org.junit.jupiter.api.Assertions.*;
import org.junit.jupiter.api.Test;
class LibraryUnitTest {
@Test
void givenEmptyLibrary_whenAddABook_thenLibraryHasOneBook() {
Library library = new Library();
Book theLordOfTheRings = new Book("The Lord of the Rings", "J.R.R. Tolkien");
library.addBook(theLordOfTheRings);
int expected = 1;
int actual = library.getBooks().size();
assertEquals(expected, actual);
}
@Test
void givenTheLibraryWithABook_whenRemoveABook_thenLibraryIsEmpty() {
Library library = new Library();
Book theLordOfTheRings = new Book("The Lord of the Rings", "J.R.R. Tolkien");
library.addBook(theLordOfTheRings);
library.removeBook(theLordOfTheRings);
int expected = 0;
int actual = library.getBooks().size();
assertEquals(expected, actual);
}
@Test
void givenTheLibraryWithSeveralBook_whenRemoveABookByAuthor_thenLibraryHasNoBooksByTheAuthor() {
Library library = new Library();
Book theLordOfTheRings = new Book("The Lord of the Rings", "J.R.R. Tolkien");
Book theHobbit = new Book("The Hobbit", "J.R.R. Tolkien");
Book theSilmarillion = new Book("The Silmarillion", "J.R.R. Tolkien");
Book theHungerGames = new Book("The Hunger Games", "Suzanne Collins");
library.addBook(theLordOfTheRings);
library.addBook(theHobbit);
library.addBook(theSilmarillion);
library.addBook(theHungerGames);
library.removeBookByAuthor("J.R.R. Tolkien");
int expected = 1;
int actual = library.getBooks().size();
assertEquals(expected, actual);
}
}

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core-java-modules/core-java-9-jigsaw/library-test/src/test/java/com/baeldung/library/test/LibraryUnitTest.java Normal file
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package com.baeldung.library.test;
import static org.junit.jupiter.api.Assertions.assertEquals;
import com.baeldung.library.core.Book;
import com.baeldung.library.core.Library;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import org.junit.jupiter.api.Test;
class LibraryUnitTest {
@Test
void givenEmptyLibrary_whenAddABook_thenLibraryHasOneBook() {
Library library = new Library();
Book theLordOfTheRings = new Book("The Lord of the Rings", "J.R.R. Tolkien");
library.addBook(theLordOfTheRings);
int expected = 1;
int actual = library.getBooks().size();
assertEquals(expected, actual);
}
@Test
void givenTheLibraryWithABook_whenRemoveABook_thenLibraryIsEmpty()
throws NoSuchMethodException, InvocationTargetException, IllegalAccessException {
Library library = new Library();
Book theLordOfTheRings = new Book("The Lord of the Rings", "J.R.R. Tolkien");
library.addBook(theLordOfTheRings);
Method removeBook = Library.class.getDeclaredMethod("removeBook", Book.class);
removeBook.setAccessible(true);
removeBook.invoke(library, theLordOfTheRings);
int expected = 0;
int actual = library.getBooks().size();
assertEquals(expected, actual);
}
@Test
void givenTheLibraryWithSeveralBook_whenRemoveABookByAuthor_thenLibraryHasNoBooksByTheAuthor() {
TestLibrary library = new TestLibrary();
Book theLordOfTheRings = new Book("The Lord of the Rings", "J.R.R. Tolkien");
Book theHobbit = new Book("The Hobbit", "J.R.R. Tolkien");
Book theSilmarillion = new Book("The Silmarillion", "J.R.R. Tolkien");
Book theHungerGames = new Book("The Hunger Games", "Suzanne Collins");
library.addBook(theLordOfTheRings);
library.addBook(theHobbit);
library.addBook(theSilmarillion);
library.addBook(theHungerGames);
library.removeBookByAuthor("J.R.R. Tolkien");
int expected = 1;
int actual = library.getBooks().size();
assertEquals(expected, actual);
}
}

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core-java-modules/core-java-9-jigsaw/library-test/src/test/java/com/baeldung/library/test/TestLibrary.java Normal file
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package com.baeldung.library.test;
import com.baeldung.library.core.Library;
public class TestLibrary extends Library {
@Override
public void removeBookByAuthor(final String author) {
super.removeBookByAuthor(author);
}
}

5
core-java-modules/core-java-9-jigsaw/library-test/src/test/java/module-info.java Normal file
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module com.baeldung.library.test {
requires com.baeldung.library.core;
requires org.junit.jupiter.api;
opens com.baeldung.library.test to org.junit.platform.commons;
}

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core-java-modules/core-java-9-jigsaw/pom.xml
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<modelVersion>4.0.0</modelVersion>
<artifactId>core-java-9-jigsaw</artifactId>
<name>core-java-9-jigsaw</name>
<packaging>pom</packaging>
<modules>
<module>library-core</module>
</modules>
<parent>
<groupId>com.baeldung</groupId>

7
core-java-modules/core-java-9-jigsaw/run-library-core-module-with-patch.sh Normal file
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#!/usr/bin/env bash
java --module-path mods:libs \
--add-modules com.baeldung.library.core \
--add-opens com.baeldung.library.core/com.baeldung.library.core=org.junit.platform.commons \
--add-reads com.baeldung.library.core=org.junit.jupiter.api \
--patch-module com.baeldung.library.core=outDir/library-test \
--module org.junit.platform.console --select-class com.baeldung.library.core.LibraryUnitTest

2
core-java-modules/core-java-9-jigsaw/run-library-core-module.sh Normal file
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#!/usr/bin/env bash
java --module-path mods --module com.baeldung.library.core/com.baeldung.library.core.Main

5
core-java-modules/core-java-9-jigsaw/run-library-test-class-path.sh Normal file
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#!/usr/bin/env bash
java --module-path libs \
org.junit.platform.console.ConsoleLauncher \
--classpath ./outDir/library-core \
--select-class com.baeldung.library.core.LibraryUnitTest

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core-java-modules/core-java-9-jigsaw/run-library-test-module-path.sh Normal file
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#!/usr/bin/env bash
java --module-path mods:libs \
--add-modules com.baeldung.library.test \
--add-opens com.baeldung.library.core/com.baeldung.library.core=com.baeldung.library.test \
org.junit.platform.console.ConsoleLauncher --select-class com.baeldung.library.test.LibraryUnitTest