Make DependencyResolutionContext empty by default

It's more useful as a building block for other tools that way,
and it's easy to add the spring boot dependencies using public
methods.

spring-boot-cli/src/test/java/org/springframework/boot/cli/compiler/ResolveDependencyCoordinatesTransformationTests.java

@@ -43,6 +43,7 @@ import org.junit.Before;
 import org.junit.Test;
 
 import org.springframework.boot.cli.compiler.dependencies.ArtifactCoordinatesResolver;
+import org.springframework.boot.cli.compiler.dependencies.SpringBootDependenciesDependencyManagement;
 import org.springframework.boot.cli.compiler.grape.DependencyResolutionContext;
 
 import static org.assertj.core.api.Assertions.assertThat;
@@ -68,6 +69,10 @@ public final class ResolveDependencyCoordinatesTransformationTests {
 
 	private final DependencyResolutionContext resolutionContext = new DependencyResolutionContext() {
 
+		{
+			addDependencyManagement(new SpringBootDependenciesDependencyManagement());
+		}
+
 		@Override
 		public ArtifactCoordinatesResolver getArtifactCoordinatesResolver() {
 			return ResolveDependencyCoordinatesTransformationTests.this.coordinatesResolver;

spring-boot-cli/src/test/java/org/springframework/boot/cli/compiler/grape/AetherGrapeEngineTests.java

@@ -32,6 +32,7 @@ import org.eclipse.aether.repository.Authentication;
 import org.eclipse.aether.repository.RemoteRepository;
 import org.junit.Test;
 
+import org.springframework.boot.cli.compiler.dependencies.SpringBootDependenciesDependencyManagement;
 import org.springframework.test.util.ReflectionTestUtils;
 
 import static org.assertj.core.api.Assertions.assertThat;
@@ -54,8 +55,11 @@ public class AetherGrapeEngineTests {
 		repositoryConfigurations.add(new RepositoryConfiguration("central",
 				URI.create("http://repo1.maven.org/maven2"), false));
 		repositoryConfigurations.addAll(Arrays.asList(additionalRepositories));
+		DependencyResolutionContext dependencyResolutionContext = new DependencyResolutionContext();
+		dependencyResolutionContext.addDependencyManagement(
+				new SpringBootDependenciesDependencyManagement());
 		return AetherGrapeEngineFactory.create(this.groovyClassLoader,
-				repositoryConfigurations, new DependencyResolutionContext());
+				repositoryConfigurations, dependencyResolutionContext);
 	}
 
 	@Test

spring-boot-cli/src/test/java/org/springframework/boot/cli/compiler/grape/DependencyResolutionContextTests.java

@@ -0,0 +1,43 @@
+/*
+ * Copyright 2012-2015 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.cli.compiler.grape;
+
+import org.junit.Test;
+
+import org.springframework.boot.cli.compiler.dependencies.SpringBootDependenciesDependencyManagement;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * @author Dave Syer
+ *
+ */
+public class DependencyResolutionContextTests {
+
+	@Test
+	public void defaultDependenciesEmpty() {
+		assertThat(new DependencyResolutionContext().getManagedDependencies()).isEmpty();
+	}
+
+	@Test
+	public void canAddSpringBootDependencies() {
+		DependencyResolutionContext dependencyResolutionContext = new DependencyResolutionContext();
+		dependencyResolutionContext.addDependencyManagement(new SpringBootDependenciesDependencyManagement());
+		assertThat(dependencyResolutionContext.getManagedDependencies()).isNotEmpty();
+	}
+
+}