Add spring-batch-test when Spring Batch is selected

See gh-516

initializr-service/src/main/java/io/spring/initializr/service/extension/SpringBatchTestRequestPostProcessor.java

@@ -0,0 +1,63 @@
+/*
+ * Copyright 2012-2017 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 io.spring.initializr.service.extension;
+
+import io.spring.initializr.generator.ProjectRequest;
+import io.spring.initializr.generator.ProjectRequestPostProcessor;
+import io.spring.initializr.metadata.Dependency;
+import io.spring.initializr.metadata.InitializrMetadata;
+import io.spring.initializr.util.Version;
+import org.springframework.stereotype.Component;
+
+/**
+ * A {@link ProjectRequestPostProcessor} that automatically adds
+ * {@code spring-batch-test} when Spring Batch is selected.
+ *
+ * @author Tim Riemer
+ */
+@Component
+class SpringBatchTestRequestPostProcessor implements ProjectRequestPostProcessor {
+
+	private static final Version VERSION_1_3_0 = Version.parse("1.3.0.RELEASE");
+
+	private final Dependency springBatchTest;
+
+	public SpringBatchTestRequestPostProcessor() {
+		this.springBatchTest = Dependency.withId("spring-batch-test",
+				"org.springframework.batch", "spring-batch-test");
+		this.springBatchTest.setScope(Dependency.SCOPE_TEST);
+	}
+
+	@Override
+	public void postProcessAfterResolution(ProjectRequest request,
+			InitializrMetadata metadata) {
+		if (hasSpringBatch(request) && isAtLeastAfter(request, VERSION_1_3_0)) {
+			request.getResolvedDependencies().add(this.springBatchTest);
+		}
+	}
+
+	private boolean hasSpringBatch(ProjectRequest request) {
+		return request.getResolvedDependencies().stream()
+				.anyMatch(d -> "batch".equals(d.getId()));
+	}
+
+	private boolean isAtLeastAfter(ProjectRequest request, Version version) {
+		Version requestVersion = Version.safeParse(request.getBootVersion());
+		return version.compareTo(requestVersion) <= 0;
+	}
+
+}

initializr-service/src/test/java/io/spring/initializr/service/extension/SpringBatchTestRequestPostProcessorTests.java

@@ -0,0 +1,58 @@
+/*
+ * Copyright 2012-2017 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 io.spring.initializr.service.extension;
+
+import io.spring.initializr.generator.ProjectRequest;
+import io.spring.initializr.metadata.Dependency;
+import org.junit.Test;
+
+/**
+ * Tests for {@link SpringBatchTestRequestPostProcessor}.
+ *
+ * @author Tim Riemer
+ */
+public class SpringBatchTestRequestPostProcessorTests
+        extends AbstractRequestPostProcessorTests {
+
+    @Test
+    public void batchTestIsAddedWithBatch() {
+        ProjectRequest request = createProjectRequest("batch");
+        generateMavenPom(request)
+                .hasSpringBootStarterDependency("batch")
+                .hasSpringBootStarterTest()
+                .hasDependency(springBatchTest())
+                .hasDependenciesCount(3);
+    }
+
+    @Test
+    public void batchTestIsNotAddedBefore13() {
+        ProjectRequest request = createProjectRequest("batch");
+        request.setBootVersion("1.2.7.RELEASE");
+        generateMavenPom(request)
+                .hasSpringBootStarterDependency("batch")
+                .hasSpringBootStarterTest()
+                .hasDependenciesCount(2);
+    }
+
+    private static Dependency springBatchTest() {
+        Dependency dependency = Dependency.withId("spring-batch-test",
+                "org.springframework.batch", "spring-batch-test");
+        dependency.setScope(Dependency.SCOPE_TEST);
+        return dependency;
+    }
+
+}