Add support for writing license and developer in Maven pom

See gh-1029

initializr-generator/src/main/java/io/spring/initializr/generator/buildsystem/maven/MavenBuildSettings.java

@@ -16,6 +16,10 @@
 
 package io.spring.initializr.generator.buildsystem.maven;
 
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
 import io.spring.initializr.generator.buildsystem.BuildSettings;
 import io.spring.initializr.generator.packaging.Packaging;
 
@@ -23,6 +27,7 @@ import io.spring.initializr.generator.packaging.Packaging;
  * Maven {@link BuildSettings}.
  *
  * @author Stephane Nicoll
+ * @author Jafer Khan Shamshad
  */
 public class MavenBuildSettings extends BuildSettings {
 
@@ -34,6 +39,10 @@ public class MavenBuildSettings extends BuildSettings {
 
 	private final String description;
 
+	private final List<MavenLicense> licenses;
+
+	private final List<MavenDeveloper> developers;
+
 	private final String sourceDirectory;
 
 	private final String testSourceDirectory;
@@ -44,6 +53,8 @@ public class MavenBuildSettings extends BuildSettings {
 		this.packaging = builder.packaging;
 		this.name = builder.name;
 		this.description = builder.description;
+		this.licenses = Collections.unmodifiableList(new ArrayList<>(builder.licenses));
+		this.developers = Collections.unmodifiableList(new ArrayList<>(builder.developers));
 		this.sourceDirectory = builder.sourceDirectory;
 		this.testSourceDirectory = builder.testSourceDirectory;
 	}
@@ -82,6 +93,22 @@ public class MavenBuildSettings extends BuildSettings {
 		return this.description;
 	}
 
+	/**
+	 * Return the {@linkplain MavenLicense licenses} associated with the project.
+	 * @return the licenses of the project or {@code null}
+	 */
+	public List<MavenLicense> getLicenses() {
+		return this.licenses;
+	}
+
+	/**
+	 * Return the {@linkplain MavenDeveloper developers} associated with the project.
+	 * @return the developers of the project or {@code null}
+	 */
+	public List<MavenDeveloper> getDevelopers() {
+		return this.developers;
+	}
+
 	/**
 	 * Return the location of main source code. Can use Maven properties such as
 	 * {@code ${basedir}}.
@@ -115,6 +142,10 @@ public class MavenBuildSettings extends BuildSettings {
 
 		private String description;
 
+		private List<MavenLicense> licenses = new ArrayList<>();
+
+		private List<MavenDeveloper> developers = new ArrayList<>();
+
 		private String sourceDirectory;
 
 		private String testSourceDirectory;
@@ -165,6 +196,26 @@ public class MavenBuildSettings extends BuildSettings {
 			return self();
 		}
 
+		/**
+		 * Set the licenses of the project.
+		 * @param licenses the licenses associated with the project
+		 * @return this for method chaining
+		 */
+		public Builder licenses(List<MavenLicense> licenses) {
+			this.licenses = licenses;
+			return self();
+		}
+
+		/**
+		 * Set the developers of the project.
+		 * @param developers the developers associated with the project
+		 * @return this for method chaining
+		 */
+		public Builder developers(List<MavenDeveloper> developers) {
+			this.developers = developers;
+			return self();
+		}
+
 		/**
 		 * Set a human readable description of the project.
 		 * @param description the description of the project

initializr-generator/src/main/java/io/spring/initializr/generator/buildsystem/maven/MavenBuildWriter.java

@@ -20,6 +20,7 @@ import java.util.Arrays;
 import java.util.Collection;
 import java.util.Comparator;
 import java.util.List;
+import java.util.Map;
 import java.util.function.BiConsumer;
 import java.util.function.Predicate;
 import java.util.stream.Collectors;
@@ -46,6 +47,7 @@ import io.spring.initializr.generator.version.VersionReference;
  * @author Andy Wilkinson
  * @author Stephane Nicoll
  * @author Olga Maciaszek-Sharma
+ * @author Jafer Khan Shamshad
  */
 public class MavenBuildWriter {
 
@@ -62,6 +64,8 @@ public class MavenBuildWriter {
 			writeProjectCoordinates(writer, settings);
 			writePackaging(writer, settings);
 			writeProjectName(writer, settings);
+			writeLicenses(writer, settings);
+			writeDevelopers(writer, settings);
 			writeProperties(writer, build.properties());
 			writeDependencies(writer, build);
 			writeDependencyManagement(writer, build);
@@ -129,6 +133,51 @@ public class MavenBuildWriter {
 		});
 	}
 
+	private void writeDevelopers(IndentingWriter writer, MavenBuildSettings settings) {
+		if (settings.getDevelopers().isEmpty()) {
+			return;
+		}
+		writeElement(writer, "developers",
+				() -> writeCollection(writer, settings.getDevelopers(), this::writeDeveloper));
+	}
+
+	private void writeDeveloper(IndentingWriter writer, MavenDeveloper developer) {
+		writeElement(writer, "developer", () -> {
+			writeSingleElement(writer, "id", developer.getId());
+			writeSingleElement(writer, "name", developer.getName());
+			writeSingleElement(writer, "email", developer.getEmail());
+			writeSingleElement(writer, "url", developer.getUrl());
+			writeSingleElement(writer, "organization", developer.getOrganization());
+			writeSingleElement(writer, "organizationUrl", developer.getOrganizationUrl());
+			List<String> roles = developer.getRoles();
+			if (!roles.isEmpty()) {
+				writeElement(writer, "roles", () -> roles.forEach((role) -> writeSingleElement(writer, "role", role)));
+			}
+			writeSingleElement(writer, "timezone", developer.getTimezone());
+			Map<String, String> properties = developer.getProperties();
+			if (!properties.isEmpty()) {
+				writeElement(writer, "properties",
+						() -> properties.forEach((key, value) -> writeSingleElement(writer, key, value)));
+			}
+		});
+	}
+
+	private void writeLicenses(IndentingWriter writer, MavenBuildSettings settings) {
+		if (settings.getLicenses().isEmpty()) {
+			return;
+		}
+		writeElement(writer, "licenses", () -> writeCollection(writer, settings.getLicenses(), this::writeLicense));
+	}
+
+	private void writeLicense(IndentingWriter writer, MavenLicense license) {
+		writeElement(writer, "license", () -> {
+			writeSingleElement(writer, "name", license.getName());
+			writeSingleElement(writer, "url", license.getUrl());
+			writeSingleElement(writer, "distribution", license.getDistribution());
+			writeSingleElement(writer, "comments", license.getComments());
+		});
+	}
+
 	private void writeDependencies(IndentingWriter writer, MavenBuild build) {
 		if (build.dependencies().isEmpty()) {
 			return;

initializr-generator/src/main/java/io/spring/initializr/generator/buildsystem/maven/MavenDeveloper.java

@@ -0,0 +1,254 @@
+/*
+ * Copyright 2012-2019 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.spring.initializr.generator.buildsystem.maven;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.LinkedHashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * A {@code <developer>} in a Maven pom.
+ *
+ * @author Jafer Khan Shamshad
+ */
+public class MavenDeveloper {
+
+	private final String id;
+
+	private final String name;
+
+	private final String email;
+
+	private final String url;
+
+	private final String organization;
+
+	private final String organizationUrl;
+
+	private final List<String> roles;
+
+	private final String timezone;
+
+	private final Map<String, String> properties;
+
+	public MavenDeveloper(Builder builder) {
+		this.id = builder.id;
+		this.name = builder.name;
+		this.email = builder.email;
+		this.url = builder.url;
+		this.organization = builder.organization;
+		this.organizationUrl = builder.organizationUrl;
+		this.roles = Collections.unmodifiableList(new ArrayList<>(builder.roles));
+		this.timezone = builder.timezone;
+		this.properties = Collections.unmodifiableMap(new LinkedHashMap<>(builder.properties));
+	}
+
+	/**
+	 * Return the ID of the developer.
+	 * @return the ID
+	 */
+	public String getId() {
+		return this.id;
+	}
+
+	/**
+	 * Return the name of the developer.
+	 * @return the name
+	 */
+	public String getName() {
+		return this.name;
+	}
+
+	/**
+	 * Return the e-mail address of the developer.
+	 * @return the e-mail address
+	 */
+	public String getEmail() {
+		return this.email;
+	}
+
+	/**
+	 * Return the URL of the developer.
+	 * @return the URL
+	 */
+	public String getUrl() {
+		return this.url;
+	}
+
+	/**
+	 * Return the organization's name of the developer.
+	 * @return the organization
+	 */
+	public String getOrganization() {
+		return this.organization;
+	}
+
+	/**
+	 * Return the associated organization's URL of the developer.
+	 * @return the organization's URL
+	 */
+	public String getOrganizationUrl() {
+		return this.organizationUrl;
+	}
+
+	/**
+	 * Return the roles of the developer.
+	 * @return the roles
+	 */
+	public List<String> getRoles() {
+		return this.roles;
+	}
+
+	/**
+	 * Return the timezone associated with the developer.
+	 * @return the timezone
+	 */
+	public String getTimezone() {
+		return this.timezone;
+	}
+
+	/**
+	 * Return other properties associated with the developer.
+	 * @return other properties
+	 */
+	public Map<String, String> getProperties() {
+		return this.properties;
+	}
+
+	/**
+	 * Builder for a {@link MavenDeveloper}.
+	 */
+	public static class Builder {
+
+		private String id;
+
+		private String name;
+
+		private String email;
+
+		private String url;
+
+		private String organization;
+
+		private String organizationUrl;
+
+		private final List<String> roles = new ArrayList<>();
+
+		private String timezone;
+
+		private final Map<String, String> properties = new LinkedHashMap<>();
+
+		/**
+		 * Set the ID of the developer.
+		 * @param id the ID of the developer or {@code null}
+		 * @return this for method chaining
+		 */
+		public Builder id(String id) {
+			this.id = id;
+			return this;
+		}
+
+		/**
+		 * Set the name of the developer.
+		 * @param name the name of the developer or {@code null}
+		 * @return this for method chaining
+		 */
+		public Builder name(String name) {
+			this.name = name;
+			return this;
+		}
+
+		/**
+		 * Set the e-mail address of the developer.
+		 * @param email the e-mail address of the developer or {@code null}
+		 * @return this for method chaining
+		 */
+		public Builder email(String email) {
+			this.email = email;
+			return this;
+		}
+
+		/**
+		 * Set the URL of the developer.
+		 * @param url the URL of the developer or {@code null}
+		 * @return this for method chaining
+		 */
+		public Builder url(String url) {
+			this.url = url;
+			return this;
+		}
+
+		/**
+		 * Set the organization's name of the developer.
+		 * @param organization the organization of the developer or {@code null}
+		 * @return this for method chaining
+		 */
+		public Builder organization(String organization) {
+			this.organization = organization;
+			return this;
+		}
+
+		/**
+		 * Set the associated organization's URL of the developer.
+		 * @param organizationUrl the URL of the organization or {@code null}
+		 * @return this for method chaining
+		 */
+		public Builder organizationUrl(String organizationUrl) {
+			this.organizationUrl = organizationUrl;
+			return this;
+		}
+
+		/**
+		 * Add a role of the developer.
+		 * @param role the role of the developer
+		 * @return this for method chaining
+		 */
+		public Builder role(String role) {
+			this.roles.add(role);
+			return this;
+		}
+
+		/**
+		 * Set the timezone associated with the developer.
+		 * @param timezone the timezone that the developer lives in or {@code null}
+		 * @return this for method chaining
+		 */
+		public Builder timezone(String timezone) {
+			this.timezone = timezone;
+			return this;
+		}
+
+		/**
+		 * Add a property associated with the developer.
+		 * @param key the appropriate key associated with the property
+		 * @param value the value of the property
+		 * @return this for method chaining
+		 */
+		public Builder property(String key, String value) {
+			this.properties.put(key, value);
+			return this;
+		}
+
+		public MavenDeveloper build() {
+			return new MavenDeveloper(this);
+		}
+
+	}
+
+}

initializr-generator/src/main/java/io/spring/initializr/generator/buildsystem/maven/MavenLicense.java

@@ -0,0 +1,132 @@
+/*
+ * Copyright 2012-2019 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.spring.initializr.generator.buildsystem.maven;
+
+/**
+ * A {@code <license>} in a Maven pom.
+ *
+ * @author Jafer Khan Shamshad
+ */
+public class MavenLicense {
+
+	private final String name;
+
+	private final String url;
+
+	private final String distribution;
+
+	private final String comments;
+
+	public MavenLicense(Builder builder) {
+		this.name = builder.name;
+		this.url = builder.url;
+		this.distribution = builder.distribution;
+		this.comments = builder.comments;
+	}
+
+	/**
+	 * Return the name of the license.
+	 * @return the name
+	 */
+	public String getName() {
+		return this.name;
+	}
+
+	/**
+	 * Return the URL of the license.
+	 * @return the URL
+	 */
+	public String getUrl() {
+		return this.url;
+	}
+
+	/**
+	 * Return the distribution mechanism of the project associated with the license.
+	 * @return the distribution mechanism
+	 */
+	public String getDistribution() {
+		return this.distribution;
+	}
+
+	/**
+	 * Return the comments associated with the license.
+	 * @return the comments
+	 */
+	public String getComments() {
+		return this.comments;
+	}
+
+	/**
+	 * Builder for a {@link MavenLicense}.
+	 */
+	public static class Builder {
+
+		private String name;
+
+		private String url;
+
+		private String distribution;
+
+		private String comments;
+
+		/**
+		 * Set the name of the license.
+		 * @param name the name of the license or {@code null}
+		 * @return this for method chaining
+		 */
+		public Builder name(String name) {
+			this.name = name;
+			return this;
+		}
+
+		/**
+		 * Set the URL of the license.
+		 * @param url the URL of the license or {@code null}
+		 * @return this for method chaining
+		 */
+		public Builder url(String url) {
+			this.url = url;
+			return this;
+		}
+
+		/**
+		 * Set the distribution mechanism of the project associated with the license.
+		 * @param distribution the distribution mechanism of the project or {@code null}
+		 * @return this for method chaining
+		 */
+		public Builder distribution(String distribution) {
+			this.distribution = distribution;
+			return this;
+		}
+
+		/**
+		 * Set comments associated with the license.
+		 * @param comments the comments for the license or {@code null}
+		 * @return this for method chaining
+		 */
+		public Builder comments(String comments) {
+			this.comments = comments;
+			return this;
+		}
+
+		public MavenLicense build() {
+			return new MavenLicense(this);
+		}
+
+	}
+
+}

initializr-generator/src/test/java/io/spring/initializr/generator/buildsystem/maven/MavenBuildWriterTests.java

@@ -17,6 +17,7 @@
 package io.spring.initializr.generator.buildsystem.maven;
 
 import java.io.StringWriter;
+import java.util.Collections;
 import java.util.function.Consumer;
 
 import io.spring.initializr.generator.buildsystem.BillOfMaterials;
@@ -36,6 +37,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  *
  * @author Stephane Nicoll
  * @author Olga Maciaszek-Sharma
+ * @author Jafer Khan Shamshad
  */
 class MavenBuildWriterTests {
 
@@ -107,6 +109,121 @@ class MavenBuildWriterTests {
 		});
 	}
 
+	@Test
+	void pomWithNoLicense() {
+		MavenBuild build = new MavenBuild();
+		build.settings().coordinates("com.example.demo", "demo").build();
+		generatePom(build, (pom) -> assertThat(pom.nodeAtPath("/project/licenses")).isNull());
+	}
+
+	@Test
+	void pomWithLicense() {
+		MavenBuild build = new MavenBuild();
+		build.settings().coordinates("com.example.demo", "demo")
+				.licenses(Collections.singletonList(new MavenLicense.Builder().name("Apache License, Version 2.0")
+						.url("https://www.apache.org/licenses/LICENSE-2.0").distribution("repo")
+						.comments("A business-friendly OSS license").build()));
+		generatePom(build, (pom) -> {
+			NodeAssert licenses = pom.nodeAtPath("/project/licenses");
+			assertThat(licenses).isNotNull();
+			NodeAssert license = licenses.nodeAtPath("license");
+			assertThat(license).isNotNull();
+			assertThat(license).textAtPath("name").isEqualTo("Apache License, Version 2.0");
+			assertThat(license).textAtPath("url").isEqualTo("https://www.apache.org/licenses/LICENSE-2.0");
+			assertThat(license).textAtPath("distribution").isEqualTo("repo");
+			assertThat(license).textAtPath("comments").isEqualTo("A business-friendly OSS license");
+		});
+	}
+
+	@Test
+	void pomWithNoDeveloper() {
+		MavenBuild build = new MavenBuild();
+		build.settings().coordinates("com.example.demo", "demo").build();
+		generatePom(build, (pom) -> assertThat(pom.nodeAtPath("/project/developers")).isNull());
+	}
+
+	@Test
+	void pomWithDeveloper() {
+		MavenBuild build = new MavenBuild();
+		build.settings().coordinates("com.example.demo", "demo")
+				.developers(Collections.singletonList(new MavenDeveloper.Builder().id("jaferkhan")
+						.name("Jafer Khan Shamshad").email("jaferkhan@example.com")
+						.url("http://www.example.com/jaferkhan").organization("ACME")
+						.organizationUrl("http://www.example.com").timezone("Asia/Karachi").build()))
+				.build();
+		generatePom(build, (pom) -> {
+			NodeAssert developers = pom.nodeAtPath("/project/developers");
+			assertThat(developers).isNotNull();
+			NodeAssert developer = developers.nodeAtPath("developer");
+			assertThat(developer).isNotNull();
+			assertThat(developer).textAtPath("id").isEqualTo("jaferkhan");
+			assertThat(developer).textAtPath("name").isEqualTo("Jafer Khan Shamshad");
+			assertThat(developer).textAtPath("email").isEqualTo("jaferkhan@example.com");
+			assertThat(developer).textAtPath("url").isEqualTo("http://www.example.com/jaferkhan");
+			assertThat(developer).textAtPath("organization").isEqualTo("ACME");
+			assertThat(developer).textAtPath("organizationUrl").isEqualTo("http://www.example.com");
+			assertThat(developer.nodeAtPath("roles")).isNull();
+			assertThat(developer).textAtPath("timezone").isEqualTo("Asia/Karachi");
+			assertThat(developer.nodeAtPath("properties")).isNull();
+		});
+	}
+
+	@Test
+	void pomWithDeveloperWithRoles() {
+		MavenBuild build = new MavenBuild();
+		build.settings().coordinates("com.example.demo", "demo")
+				.developers(Collections.singletonList(new MavenDeveloper.Builder().id("jaferkhan")
+						.name("Jafer Khan Shamshad").role("developer").role("tester").build()))
+				.build();
+		generatePom(build, (pom) -> {
+			NodeAssert developers = pom.nodeAtPath("/project/developers");
+			assertThat(developers).isNotNull();
+			NodeAssert developer = developers.nodeAtPath("developer");
+			assertThat(developer).isNotNull();
+			assertThat(developer).textAtPath("id").isEqualTo("jaferkhan");
+			assertThat(developer).textAtPath("name").isEqualTo("Jafer Khan Shamshad");
+			assertThat(developer).textAtPath("email").isNullOrEmpty();
+			assertThat(developer).textAtPath("url").isNullOrEmpty();
+			assertThat(developer).textAtPath("organization").isNullOrEmpty();
+			assertThat(developer).textAtPath("organizationUrl").isNullOrEmpty();
+			assertThat(developer).textAtPath("timezone").isNullOrEmpty();
+			assertThat(developer.nodeAtPath("properties")).isNull();
+			NodeAssert roles = developer.nodeAtPath("roles");
+			assertThat(roles).isNotNull();
+			roles.nodesAtPath("role").hasSize(2);
+			assertThat(roles).textAtPath("role[1]").isEqualTo("developer");
+			assertThat(roles).textAtPath("role[2]").isEqualTo("tester");
+		});
+	}
+
+	@Test
+	void pomWithDeveloperWithProperties() {
+		MavenBuild build = new MavenBuild();
+		build.settings().coordinates("com.example.demo", "demo")
+				.developers(Collections.singletonList(new MavenDeveloper.Builder().id("jaferkhan")
+						.name("Jafer Khan Shamshad").property("hometown", "Mardan").property("ethnicity", "Pukhtun")
+						.property("religion", "Islam").build()))
+				.build();
+		generatePom(build, (pom) -> {
+			NodeAssert developers = pom.nodeAtPath("/project/developers");
+			assertThat(developers).isNotNull();
+			NodeAssert developer = developers.nodeAtPath("developer");
+			assertThat(developer).isNotNull();
+			assertThat(developer).textAtPath("id").isEqualTo("jaferkhan");
+			assertThat(developer).textAtPath("name").isEqualTo("Jafer Khan Shamshad");
+			assertThat(developer).textAtPath("email").isNullOrEmpty();
+			assertThat(developer).textAtPath("url").isNullOrEmpty();
+			assertThat(developer).textAtPath("organization").isNullOrEmpty();
+			assertThat(developer).textAtPath("organizationUrl").isNullOrEmpty();
+			assertThat(developer).textAtPath("timezone").isNullOrEmpty();
+			NodeAssert properties = developer.nodeAtPath("properties");
+			assertThat(properties).isNotNull();
+			assertThat(properties).textAtPath("hometown").isEqualTo("Mardan");
+			assertThat(properties).textAtPath("ethnicity").isEqualTo("Pukhtun");
+			assertThat(properties).textAtPath("religion").isEqualTo("Islam");
+		});
+	}
+
 	@Test
 	void pomWithAnnotationProcessorDependency() {
 		MavenBuild build = new MavenBuild();

initializr-generator/src/test/java/io/spring/initializr/generator/buildsystem/maven/MavenDeveloperTests.java

@@ -0,0 +1,162 @@
+/*
+ * Copyright 2012-2019 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.spring.initializr.generator.buildsystem.maven;
+
+import org.junit.jupiter.api.Test;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.entry;
+
+/**
+ * Tests for {@link MavenDeveloper}
+ *
+ * @author Jafer Khan Shamshad
+ */
+class MavenDeveloperTests {
+
+	@Test
+	void developerWithIdOnly() {
+		MavenDeveloper developer = new MavenDeveloper.Builder().id("jaferkhan").build();
+		assertThat(developer.getId()).isEqualTo("jaferkhan");
+		assertThat(developer.getName()).isNull();
+		assertThat(developer.getEmail()).isNull();
+		assertThat(developer.getUrl()).isNull();
+		assertThat(developer.getOrganization()).isNull();
+		assertThat(developer.getOrganizationUrl()).isNull();
+		assertThat(developer.getRoles()).hasSize(0);
+		assertThat(developer.getTimezone()).isNull();
+		assertThat(developer.getProperties()).hasSize(0);
+	}
+
+	@Test
+	void developerWithName() {
+		MavenDeveloper developer = new MavenDeveloper.Builder().id("jaferkhan").name("Jafer Khan Shamshad").build();
+		assertThat(developer.getId()).isEqualTo("jaferkhan");
+		assertThat(developer.getName()).isEqualTo("Jafer Khan Shamshad");
+		assertThat(developer.getEmail()).isNull();
+		assertThat(developer.getUrl()).isNull();
+		assertThat(developer.getOrganization()).isNull();
+		assertThat(developer.getOrganizationUrl()).isNull();
+		assertThat(developer.getRoles()).hasSize(0);
+		assertThat(developer.getTimezone()).isNull();
+		assertThat(developer.getProperties()).hasSize(0);
+	}
+
+	@Test
+	void developerWithEmail() {
+		MavenDeveloper developer = new MavenDeveloper.Builder().id("jaferkhan").name("Jafer Khan Shamshad")
+				.email("jaferkhan@example.com").build();
+		assertThat(developer.getId()).isEqualTo("jaferkhan");
+		assertThat(developer.getName()).isEqualTo("Jafer Khan Shamshad");
+		assertThat(developer.getEmail()).isEqualTo("jaferkhan@example.com");
+		assertThat(developer.getUrl()).isNull();
+		assertThat(developer.getOrganization()).isNull();
+		assertThat(developer.getOrganizationUrl()).isNull();
+		assertThat(developer.getRoles()).hasSize(0);
+		assertThat(developer.getTimezone()).isNull();
+		assertThat(developer.getProperties()).hasSize(0);
+	}
+
+	@Test
+	void developerWithUrl() {
+		MavenDeveloper developer = new MavenDeveloper.Builder().id("jaferkhan").name("Jafer Khan Shamshad")
+				.email("jaferkhan@example.com").url("http://www.example.com/jaferkhan").build();
+		assertThat(developer.getId()).isEqualTo("jaferkhan");
+		assertThat(developer.getName()).isEqualTo("Jafer Khan Shamshad");
+		assertThat(developer.getEmail()).isEqualTo("jaferkhan@example.com");
+		assertThat(developer.getUrl()).isEqualTo("http://www.example.com/jaferkhan");
+		assertThat(developer.getOrganization()).isNull();
+		assertThat(developer.getOrganizationUrl()).isNull();
+		assertThat(developer.getRoles()).hasSize(0);
+		assertThat(developer.getTimezone()).isNull();
+		assertThat(developer.getProperties()).hasSize(0);
+	}
+
+	@Test
+	void developerWithOrganization() {
+		MavenDeveloper developer = new MavenDeveloper.Builder().id("jaferkhan").name("Jafer Khan Shamshad")
+				.email("jaferkhan@example.com").url("http://www.example.com/jaferkhan").organization("ACME")
+				.organizationUrl("http://www.example.com").build();
+		assertThat(developer.getId()).isEqualTo("jaferkhan");
+		assertThat(developer.getName()).isEqualTo("Jafer Khan Shamshad");
+		assertThat(developer.getEmail()).isEqualTo("jaferkhan@example.com");
+		assertThat(developer.getUrl()).isEqualTo("http://www.example.com/jaferkhan");
+		assertThat(developer.getOrganization()).isEqualTo("ACME");
+		assertThat(developer.getOrganizationUrl()).isEqualTo("http://www.example.com");
+		assertThat(developer.getRoles()).hasSize(0);
+		assertThat(developer.getTimezone()).isNull();
+		assertThat(developer.getProperties()).hasSize(0);
+	}
+
+	@Test
+	void developerWithRoles() {
+		MavenDeveloper developer = new MavenDeveloper.Builder().id("jaferkhan").name("Jafer Khan Shamshad")
+				.email("jaferkhan@example.com").url("http://www.example.com/jaferkhan").organization("ACME")
+				.organizationUrl("http://www.example.com").role("developer").role("tester").build();
+		assertThat(developer.getId()).isEqualTo("jaferkhan");
+		assertThat(developer.getName()).isEqualTo("Jafer Khan Shamshad");
+		assertThat(developer.getEmail()).isEqualTo("jaferkhan@example.com");
+		assertThat(developer.getUrl()).isEqualTo("http://www.example.com/jaferkhan");
+		assertThat(developer.getOrganization()).isEqualTo("ACME");
+		assertThat(developer.getOrganizationUrl()).isEqualTo("http://www.example.com");
+		assertThat(developer.getRoles()).hasSize(2);
+		assertThat(developer.getRoles().isEmpty()).isFalse();
+		assertThat(developer.getRoles()).containsExactly("developer", "tester");
+		assertThat(developer.getTimezone()).isNull();
+		assertThat(developer.getProperties()).hasSize(0);
+	}
+
+	@Test
+	void developerWithTimezone() {
+		MavenDeveloper developer = new MavenDeveloper.Builder().id("jaferkhan").name("Jafer Khan Shamshad")
+				.email("jaferkhan@example.com").url("http://www.example.com/jaferkhan").organization("ACME")
+				.organizationUrl("http://www.example.com").role("developer").role("tester").timezone("Asia/Karachi")
+				.build();
+		assertThat(developer.getId()).isEqualTo("jaferkhan");
+		assertThat(developer.getName()).isEqualTo("Jafer Khan Shamshad");
+		assertThat(developer.getEmail()).isEqualTo("jaferkhan@example.com");
+		assertThat(developer.getUrl()).isEqualTo("http://www.example.com/jaferkhan");
+		assertThat(developer.getOrganization()).isEqualTo("ACME");
+		assertThat(developer.getOrganizationUrl()).isEqualTo("http://www.example.com");
+		assertThat(developer.getRoles()).hasSize(2);
+		assertThat(developer.getRoles()).containsExactly("developer", "tester");
+		assertThat(developer.getTimezone()).isEqualTo("Asia/Karachi");
+		assertThat(developer.getProperties()).hasSize(0);
+	}
+
+	@Test
+	void developerWithProperties() {
+		MavenDeveloper developer = new MavenDeveloper.Builder().id("jaferkhan").name("Jafer Khan Shamshad")
+				.email("jaferkhan@example.com").url("http://www.example.com/jaferkhan").organization("ACME")
+				.organizationUrl("http://www.example.com").role("developer").role("tester").timezone("Asia/Karachi")
+				.property("hometown", "Mardan").property("ethnicity", "Pukhtun").property("religion", "Islam").build();
+		assertThat(developer.getId()).isEqualTo("jaferkhan");
+		assertThat(developer.getName()).isEqualTo("Jafer Khan Shamshad");
+		assertThat(developer.getEmail()).isEqualTo("jaferkhan@example.com");
+		assertThat(developer.getUrl()).isEqualTo("http://www.example.com/jaferkhan");
+		assertThat(developer.getOrganization()).isEqualTo("ACME");
+		assertThat(developer.getOrganizationUrl()).isEqualTo("http://www.example.com");
+		assertThat(developer.getRoles()).hasSize(2);
+		assertThat(developer.getRoles().isEmpty()).isFalse();
+		assertThat(developer.getRoles()).containsExactly("developer", "tester");
+		assertThat(developer.getTimezone()).isEqualTo("Asia/Karachi");
+		assertThat(developer.getProperties()).hasSize(3);
+		assertThat(developer.getProperties()).containsExactly(entry("hometown", "Mardan"),
+				entry("ethnicity", "Pukhtun"), entry("religion", "Islam"));
+	}
+
+}

initializr-generator/src/test/java/io/spring/initializr/generator/buildsystem/maven/MavenLicenseTests.java

@@ -0,0 +1,70 @@
+/*
+ * Copyright 2012-2019 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.spring.initializr.generator.buildsystem.maven;
+
+import org.junit.jupiter.api.Test;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Tests for {@link MavenLicense}
+ *
+ * @author Jafer Khan Shamshad
+ */
+class MavenLicenseTests {
+
+	@Test
+	void licenseWithNameOnly() {
+		MavenLicense license = new MavenLicense.Builder().name("Apache License, Version 2.0").build();
+		assertThat(license.getName()).isEqualTo("Apache License, Version 2.0");
+		assertThat(license.getUrl()).isNull();
+		assertThat(license.getDistribution()).isNull();
+		assertThat(license.getComments()).isNull();
+	}
+
+	@Test
+	void licenseWithUrl() {
+		MavenLicense license = new MavenLicense.Builder().name("Apache License, Version 2.0")
+				.url("https://www.apache.org/licenses/LICENSE-2.0").build();
+		assertThat(license.getName()).isEqualTo("Apache License, Version 2.0");
+		assertThat(license.getUrl()).isEqualTo("https://www.apache.org/licenses/LICENSE-2.0");
+		assertThat(license.getDistribution()).isNull();
+		assertThat(license.getComments()).isNull();
+	}
+
+	@Test
+	void licenseWithDistribution() {
+		MavenLicense license = new MavenLicense.Builder().name("Apache License, Version 2.0")
+				.url("https://www.apache.org/licenses/LICENSE-2.0").distribution("repo").build();
+		assertThat(license.getName()).isEqualTo("Apache License, Version 2.0");
+		assertThat(license.getUrl()).isEqualTo("https://www.apache.org/licenses/LICENSE-2.0");
+		assertThat(license.getDistribution()).isEqualTo("repo");
+		assertThat(license.getComments()).isNull();
+	}
+
+	@Test
+	void licenseWithComments() {
+		MavenLicense license = new MavenLicense.Builder().name("Apache License, Version 2.0")
+				.url("https://www.apache.org/licenses/LICENSE-2.0").distribution("repo")
+				.comments("A business-friendly OSS license").build();
+		assertThat(license.getName()).isEqualTo("Apache License, Version 2.0");
+		assertThat(license.getUrl()).isEqualTo("https://www.apache.org/licenses/LICENSE-2.0");
+		assertThat(license.getDistribution()).isEqualTo("repo");
+		assertThat(license.getComments()).isEqualTo("A business-friendly OSS license");
+	}
+
+}