Support transitive excludes in dependency-tools

Update spring-boot-dependency-tools to support transitive excludes.
Transitive excludes are useful with Gradle which considers each
dependency independently (see GRADLE-3061).

Transitive excludes are supported by parsing the dependency-tree file
from spring-boot-versions.

See gh-1047

spring-boot-tools/spring-boot-dependency-tools/src/test/java/org/springframework/boot/dependency/tools/DependenciesWithTransitiveExclusionsTests.java

@@ -0,0 +1,50 @@
+/*
+ * Copyright 2012-2014 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
+ *
+ *      http://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.dependency.tools;
+
+import org.junit.Test;
+
+import static org.hamcrest.Matchers.equalTo;
+import static org.junit.Assert.assertThat;
+
+/**
+ * Tests for {@link DependenciesWithTransitiveExclusions}.
+ * 
+ * @author Phillip Webb
+ */
+public class DependenciesWithTransitiveExclusionsTests {
+
+	@Test
+	public void findsTransitiveExclusions() throws Exception {
+		Dependencies source = new PomDependencies(getClass().getResourceAsStream(
+				"test-effective-pom.xml"));
+		DependencyTree tree = new DependencyTree(getClass().getResourceAsStream(
+				"test-effective-pom-dependency-tree.txt"));
+		DependenciesWithTransitiveExclusions dependencies = new DependenciesWithTransitiveExclusions(
+				source, tree);
+		assertExcludes(dependencies, "sample01", "[org.exclude:exclude01]");
+		assertExcludes(source, "sample02", "[]");
+		assertExcludes(dependencies, "sample02", "[org.exclude:exclude01]");
+	}
+
+	private void assertExcludes(Dependencies dependencies, String artifactId,
+			String expected) {
+		Dependency dependency = dependencies.find("org.sample", artifactId);
+		assertThat(dependency.getExclusions().toString(), equalTo(expected));
+	}
+
+}

spring-boot-tools/spring-boot-dependency-tools/src/test/java/org/springframework/boot/dependency/tools/DependencyTreeTests.java

@@ -0,0 +1,44 @@
+/*
+ * Copyright 2012-2014 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
+ *
+ *      http://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.dependency.tools;
+
+import org.junit.Test;
+import org.springframework.boot.dependency.tools.DependencyTree;
+
+import static org.hamcrest.Matchers.equalTo;
+import static org.junit.Assert.assertThat;
+
+/**
+ * Tests for {@link DependencyTree}.
+ * 
+ * @author Phillip Webb
+ */
+public class DependencyTreeTests {
+
+	@Test
+	public void parse() throws Exception {
+		DependencyTree tree = new DependencyTree(getClass().getResourceAsStream(
+				"sample-dependency-tree.txt"));
+		assertThat(tree.getRoot().toString(), equalTo("org.springframework.boot:"
+				+ "spring-boot-versions-dependency-tree:1.1.0.BUILD-SNAPSHOT"));
+		assertThat(tree.getDependencies().size(), equalTo(204));
+		assertThat(tree.get(0, 1).toString(), equalTo("org.slf4j:slf4j-api:1.7.6"));
+		assertThat(tree.get(203).toString(), equalTo("org.springframework.security:"
+				+ "spring-security-web:3.2.4.RELEASE"));
+	}
+
+}

spring-boot-tools/spring-boot-dependency-tools/src/test/resources/org/springframework/boot/dependency/tools/test-effective-pom-dependency-tree.txt

@@ -0,0 +1,5 @@
+org.sample:sample:pom:1.0.0.BUILD-SNAPSHOT
++- org.sample:sample01:jar:1.0.0:compile
++- org.sample:sample02:jar:1.0.0:compile
+|  +- (org.sample:sample01:jar:1.0.0:compile - omitted for duplicate)
+\- org.springframework.boot:spring-boot:jar:1.0.0.BUILD-SNAPSHOT:compile

spring-boot-tools/spring-boot-dependency-tools/src/test/resources/org/springframework/boot/dependency/tools/test-effective-pom.xml

@@ -2,6 +2,8 @@
 <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>
+	<groupId>org.sample</groupId>
+	<artifactId>sample</artifactId>
 	<version>1.0.0.BUILD-SNAPSHOT</version>
 	<properties>
 		<sample.version>1.0.0</sample.version>