Adding the multi-module Maven project from the Open Liberty guide for "Creating a multi-module application".

src/test/resources/projects/maven/multiModMavenJakartaPagesEAR/.mvn/wrapper/maven-wrapper.properties

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+distributionUrl=https://repo.maven.apache.org/maven2/org/apache/maven/apache-maven/3.8.6/apache-maven-3.8.6-bin.zip
+wrapperUrl=https://repo.maven.apache.org/maven2/org/apache/maven/wrapper/maven-wrapper/3.1.1/maven-wrapper-3.1.1.jar

src/test/resources/projects/maven/multiModMavenJakartaPagesEAR/README.md

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+# Multi-module Maven project for Jakarta EE Pages 3.1
+
+This test application has been derived from the Open Liberty guide for "Creating a multi-module application" that is available [here](https://openliberty.io/guides/maven-multimodules.html).
+
+This application has been included in the Liberty Tools for IntelliJ repository as a reference to assist with development of features for multi-module Maven projects and is also intended for use in automated testing of those features. While support for multi-module Maven projects is still under development, Liberty Tools for IntelliJ may not behave as intended when interacting with this project.

src/test/resources/projects/maven/multiModMavenJakartaPagesEAR/ear/pom.xml

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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">
+
+    <parent>
+        <groupId>io.openliberty.guides</groupId>
+        <artifactId>guide-maven-multimodules</artifactId>
+        <version>1.0-SNAPSHOT</version>
+    </parent>
+
+    <modelVersion>4.0.0</modelVersion>
+
+    <!-- tag::packaging[] -->
+    <groupId>io.openliberty.guides</groupId>
+    <artifactId>guide-maven-multimodules-ear</artifactId>
+    <version>1.0-SNAPSHOT</version>
+    <!-- tag::packagingType[] -->
+    <packaging>ear</packaging>
+    <!-- end::packagingType[] -->
+    <!-- end::packaging[] -->
+
+    <properties>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
+        <maven.compiler.source>11</maven.compiler.source>
+        <maven.compiler.target>11</maven.compiler.target>
+        <!-- Liberty configuration -->
+        <liberty.var.http.port>9080</liberty.var.http.port>
+        <liberty.var.https.port>9443</liberty.var.https.port>
+    </properties>
+
+    <dependencies>
+        <!-- web and jar modules as dependencies -->
+        <!-- tag::dependencies[] -->
+        <!-- tag::dependency-jar[] -->
+        <dependency>
+            <groupId>io.openliberty.guides</groupId>
+            <artifactId>guide-maven-multimodules-jar</artifactId>
+            <version>1.0-SNAPSHOT</version>
+            <type>jar</type>
+        </dependency>
+        <!-- end::dependency-jar[] -->
+        <!-- tag::dependency-war[] -->
+        <dependency>
+            <groupId>io.openliberty.guides</groupId>
+            <artifactId>guide-maven-multimodules-war</artifactId>
+            <version>1.0-SNAPSHOT</version>
+            <!-- tag::warType[] -->
+            <type>war</type>
+            <!-- end::warType[] -->
+        </dependency>
+        <!-- end::dependency-war[] -->
+        <!-- end::dependencies[] -->
+
+        <!-- For tests -->
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter</artifactId>
+            <version>5.11.3</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <finalName>${project.artifactId}</finalName>
+        <plugins>
+            <!-- tag::maven-ear-plugin[] -->
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-ear-plugin</artifactId>
+                <version>3.3.0</version>
+                <configuration>
+                    <modules>
+                        <!-- tag::jarModule[] -->
+                        <jarModule>
+                            <groupId>io.openliberty.guides</groupId>
+                            <artifactId>guide-maven-multimodules-jar</artifactId>
+                            <uri>/guide-maven-multimodules-jar-1.0-SNAPSHOT.jar</uri>
+                        </jarModule>
+                        <!-- end::jarModule[] -->
+                        <!-- tag::webModule[] -->
+                        <webModule>
+                            <groupId>io.openliberty.guides</groupId>
+                            <artifactId>guide-maven-multimodules-war</artifactId>
+                            <uri>/guide-maven-multimodules-war-1.0-SNAPSHOT.war</uri>
+                            <!-- Set custom context root -->
+                            <!-- tag::contextRoot[] -->
+                            <contextRoot>/converter</contextRoot>
+                            <!-- end::contextRoot[] -->
+                        </webModule>
+                        <!-- end::webModule[] -->
+                    </modules>
+                </configuration>
+            </plugin>
+            <!-- end::maven-ear-plugin[] -->
+
+            <!-- Since the package type is ear,
+            need to run testCompile to compile the tests -->
+            <!-- tag::maven-compiler-plugin[] -->
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <executions>
+                    <execution>
+                        <phase>test-compile</phase>
+                        <!-- tag::testCompile[] -->
+                        <goals>
+                            <goal>testCompile</goal>
+                        </goals>
+                        <!-- end::testCompile[] -->
+                    </execution>
+                </executions>
+            </plugin>
+            <!-- end::maven-compiler-plugin[] -->
+
+            <!-- Plugin to run integration tests -->
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-failsafe-plugin</artifactId>
+                <version>3.5.1</version>
+                <configuration>
+                    <systemPropertyVariables>
+                        <http.port>
+                            ${liberty.var.http.port}
+                        </http.port>
+                        <https.port>
+                            ${liberty.var.https.port}
+                        </https.port>
+                        <cf.context.root>/converter</cf.context.root>
+                    </systemPropertyVariables>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
+</project>

src/test/resources/projects/maven/multiModMavenJakartaPagesEAR/ear/src/main/liberty/config/server.xml

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+<server description="Sample Liberty server">
+
+    <featureManager>
+        <feature>pages-3.1</feature>
+    </featureManager>
+
+    <variable name="http.port" defaultValue="9080" />
+    <variable name="https.port" defaultValue="9443" />
+
+    <!-- tag::server[] -->
+    <httpEndpoint host="*" httpPort="${http.port}"
+        httpsPort="${https.port}" id="defaultHttpEndpoint" />
+
+    <!-- tag::EARdefinition[] -->
+    <enterpriseApplication id="guide-maven-multimodules-ear"
+        location="guide-maven-multimodules-ear.ear"
+        name="guide-maven-multimodules-ear" />
+    <!-- end::EARdefinition[] -->
+    <!-- end::server[] -->
+</server>

src/test/resources/projects/maven/multiModMavenJakartaPagesEAR/ear/src/test/java/it/io/openliberty/guides/multimodules/IT.java

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+// tag::copyright[]
+/*******************************************************************************
+ * Copyright (c) 2017, 2024 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *******************************************************************************/
+// end::copyright[]
+package it.io.openliberty.guides.multimodules;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+import java.io.BufferedReader;
+import java.io.InputStreamReader;
+import java.net.HttpURLConnection;
+import java.net.URL;
+
+import org.junit.jupiter.api.Test;
+
+public class IT {
+    String port = System.getProperty("http.port");
+    String war = "converter";
+    String urlBase = "http://localhost:" + port + "/" + war + "/";
+
+    @Test
+    // tag::testIndexPage[]
+    public void testIndexPage() throws Exception {
+        String url = this.urlBase;
+        HttpURLConnection con = testRequestHelper(url, "GET");
+        assertEquals(200, con.getResponseCode(), "Incorrect response code from " + url);
+        assertTrue(testBufferHelper(con).contains("Enter the height in centimeters"),
+                        "Incorrect response from " + url);
+    }
+    // end::testIndexPage[]
+
+    @Test
+    // tag::testHeightsPage[]
+    public void testHeightsPage() throws Exception {
+        String url = this.urlBase + "heights.jsp?heightCm=10";
+        HttpURLConnection con = testRequestHelper(url, "POST");
+        assertTrue(testBufferHelper(con).contains("3        inches"),
+                        "Incorrect response from " + url);
+    }
+    // end::testHeightsPage[]
+
+    private HttpURLConnection testRequestHelper(String url, String method)
+                    throws Exception {
+        URL obj = new URL(url);
+        HttpURLConnection con = (HttpURLConnection) obj.openConnection();
+        // optional default is GET
+        con.setRequestMethod(method);
+        return con;
+    }
+
+    private String testBufferHelper(HttpURLConnection con) throws Exception {
+        BufferedReader in = new BufferedReader(
+                        new InputStreamReader(con.getInputStream()));
+        String inputLine;
+        StringBuffer response = new StringBuffer();
+        while ((inputLine = in.readLine()) != null) {
+            response.append(inputLine);
+        }
+        in.close();
+        return response.toString();
+    }
+
+}

src/test/resources/projects/maven/multiModMavenJakartaPagesEAR/jar/pom.xml

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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">
+
+    <parent>
+        <groupId>io.openliberty.guides</groupId>
+        <artifactId>guide-maven-multimodules</artifactId>
+        <version>1.0-SNAPSHOT</version>
+    </parent>
+
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>io.openliberty.guides</groupId>
+    <artifactId>guide-maven-multimodules-jar</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <properties>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
+        <maven.compiler.source>11</maven.compiler.source>
+        <maven.compiler.target>11</maven.compiler.target>
+    </properties>
+
+</project>

src/test/resources/projects/maven/multiModMavenJakartaPagesEAR/jar/src/main/java/io/openliberty/guides/multimodules/lib/Converter.java

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+// tag::copyright[]
+/*******************************************************************************
+ * Copyright (c) 2017, 2021 IBM Corporation and others.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License 2.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-2.0/
+ *
+ * SPDX-License-Identifier: EPL-2.0
+ *******************************************************************************/
+// end::copyright[]
+package io.openliberty.guides.multimodules.lib;
+
+public class Converter {
+
+    // tag::getFeetMethod[]
+    public static int getFeet(int cm) {
+        int feet = (int) (cm / 30.48);
+        return feet;
+    }
+    // end::getFeetMethod[]
+
+    // tag::getInchesMethod[]
+    public static int getInches(int cm) {
+        double feet = cm / 30.48;
+        int inches = (int) (cm / 2.54) - ((int) feet * 12);
+        return inches;
+    }
+    // end::getInchesMethod[]
+
+    public static int sum(int a, int b) {
+        return a + b;
+    }
+
+    public static int diff(int a, int b) {
+        return a - b;
+    }
+
+    public static int product(int a, int b) {
+        return a * b;
+    }
+
+    public static int quotient(int a, int b) {
+        return a / b;
+    }
+
+}