Enhance bomr to handle libraries that use a version property

Closes gh-20478

buildSrc/src/test/java/org/springframework/boot/build/bom/bomr/UpgradeApplicatorTests.java

@@ -0,0 +1,75 @@
+/*
+ * Copyright 2020 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 org.springframework.boot.build.bom.bomr;
+
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
+import java.util.Properties;
+
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.io.TempDir;
+
+import org.springframework.boot.build.bom.Library;
+import org.springframework.boot.build.bom.bomr.version.DependencyVersion;
+import org.springframework.util.FileCopyUtils;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Tests for {@link UpgradeApplicator}.
+ *
+ * @author Andy Wilkinson
+ */
+class UpgradeApplicatorTests {
+
+	@TempDir
+	File temp;
+
+	@Test
+	void whenUpgradeIsAppliedToLibraryWithVersionThenBomIsUpdated() throws IOException {
+		File bom = new File(this.temp, "bom.gradle");
+		FileCopyUtils.copy(new File("src/test/resources/bom.gradle"), bom);
+		File gradleProperties = new File(this.temp, "gradle.properties");
+		FileCopyUtils.copy(new File("src/test/resources/gradle.properties"), gradleProperties);
+		new UpgradeApplicator(bom.toPath(), gradleProperties.toPath())
+				.apply(new Upgrade(new Library("ActiveMQ", DependencyVersion.parse("5.15.11"), null, null),
+						DependencyVersion.parse("5.16")));
+		String bomContents = new String(Files.readAllBytes(bom.toPath()), StandardCharsets.UTF_8);
+		assertThat(bomContents).contains("library(\"ActiveMQ\", \"5.16\")");
+	}
+
+	@Test
+	void whenUpgradeIsAppliedToLibraryWithVersionPropertyThenGradlePropertiesIsUpdated() throws IOException {
+		File bom = new File(this.temp, "bom.gradle");
+		FileCopyUtils.copy(new File("src/test/resources/bom.gradle"), bom);
+		File gradleProperties = new File(this.temp, "gradle.properties");
+		FileCopyUtils.copy(new File("src/test/resources/gradle.properties"), gradleProperties);
+		new UpgradeApplicator(bom.toPath(), gradleProperties.toPath())
+				.apply(new Upgrade(new Library("Kotlin", DependencyVersion.parse("1.3.70"), null, null),
+						DependencyVersion.parse("1.3.71")));
+		Properties properties = new Properties();
+		try (InputStream in = new FileInputStream(gradleProperties)) {
+			properties.load(in);
+		}
+		assertThat(properties).containsEntry("kotlinVersion", "1.3.71");
+	}
+
+}

buildSrc/src/test/resources/bom.gradle

@@ -0,0 +1,51 @@
+bom {
+	library("ActiveMQ", "5.15.11") {
+		group("org.apache.activemq") {
+			modules = [
+				"activemq-amqp",
+				"activemq-blueprint",
+				"activemq-broker",
+				"activemq-camel",
+				"activemq-client",
+				"activemq-console" {
+					exclude group: "commons-logging", module: "commons-logging"
+				},
+				"activemq-http",
+				"activemq-jaas",
+				"activemq-jdbc-store",
+				"activemq-jms-pool",
+				"activemq-kahadb-store",
+				"activemq-karaf",
+				"activemq-leveldb-store" {
+					exclude group: "commons-logging", module: "commons-logging"
+				},
+				"activemq-log4j-appender",
+				"activemq-mqtt",
+				"activemq-openwire-generator",
+				"activemq-openwire-legacy",
+				"activemq-osgi",
+				"activemq-partition",
+				"activemq-pool",
+				"activemq-ra",
+				"activemq-run",
+				"activemq-runtime-config",
+				"activemq-shiro",
+				"activemq-spring" {
+					exclude group: "commons-logging", module: "commons-logging"
+				},
+				"activemq-stomp",
+				"activemq-web"
+			]
+		}
+	}
+	library("Kotlin", "${kotlinVersion}") {
+		group("org.jetbrains.kotlin") {
+			imports = [
+				"kotlin-bom"
+			]
+			plugins = [
+				"kotlin-maven-plugin"
+			]
+		}
+	}
+}

buildSrc/src/test/resources/gradle.properties

@@ -0,0 +1,4 @@
+a=alpha
+b=bravo
+kotlinVersion=1.3.70
+t=tango