Rework BootRunTask to be more idiomatic and make fewer assumptions

spring-boot-tools/spring-boot-gradle-plugin/src/test/java/com/example/BootRunApplication.java

@@ -0,0 +1,42 @@
+/*
+ * 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 com.example;
+
+import java.net.URL;
+import java.net.URLClassLoader;
+
+/**
+ * Very basic application used for testing {@code BootRun}.
+ *
+ * @author Andy Wilkinson
+ */
+public class BootRunApplication {
+
+	protected BootRunApplication() {
+
+	}
+
+	public static void main(String[] args) {
+		int i = 1;
+		for (URL url : ((URLClassLoader) BootRunApplication.class.getClassLoader())
+				.getURLs()) {
+			System.out.println(i++ + ". " + url);
+		}
+
+	}
+
+}

spring-boot-tools/spring-boot-gradle-plugin/src/test/java/org/springframework/boot/gradle/run/BootRunIntegrationTests.java

@@ -0,0 +1,74 @@
+/*
+ * 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 org.springframework.boot.gradle.run;
+
+import java.io.File;
+import java.io.IOException;
+
+import org.gradle.testkit.runner.BuildResult;
+import org.gradle.testkit.runner.TaskOutcome;
+import org.junit.Rule;
+import org.junit.Test;
+
+import org.springframework.boot.gradle.testkit.GradleBuild;
+import org.springframework.util.FileSystemUtils;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+/**
+ * Integration tests for {@link BootRun}.
+ *
+ * @author Andy Wilkinson
+ */
+public class BootRunIntegrationTests {
+
+	@Rule
+	public final GradleBuild gradleBuild = new GradleBuild();
+
+	@Test
+	public void basicExecution() throws IOException {
+		File output = new File(this.gradleBuild.getProjectDir(),
+				"src/main/java/com/example");
+		output.mkdirs();
+		FileSystemUtils.copyRecursively(new File("src/test/java/com/example"), output);
+		new File(this.gradleBuild.getProjectDir(), "src/main/resources").mkdirs();
+		BuildResult result = this.gradleBuild.build("bootRun");
+		assertThat(result.task(":bootRun").getOutcome()).isEqualTo(TaskOutcome.SUCCESS);
+		assertThat(result.getOutput()).contains("1. " + urlOf("build/classes/main"));
+		assertThat(result.getOutput()).contains("2. " + urlOf("build/resources/main"));
+		assertThat(result.getOutput()).doesNotContain(urlOf("src/main/resources"));
+	}
+
+	@Test
+	public void sourceResourcesCanBeUsed() throws IOException {
+		File output = new File(this.gradleBuild.getProjectDir(),
+				"src/main/java/com/example");
+		output.mkdirs();
+		FileSystemUtils.copyRecursively(new File("src/test/java/com/example"), output);
+		BuildResult result = this.gradleBuild.build("bootRun");
+		assertThat(result.task(":bootRun").getOutcome()).isEqualTo(TaskOutcome.SUCCESS);
+		assertThat(result.getOutput()).contains("1. " + urlOf("src/main/resources"));
+		assertThat(result.getOutput()).contains("2. " + urlOf("build/classes/main"));
+		assertThat(result.getOutput()).doesNotContain(urlOf("build/resources/main"));
+	}
+
+	private String urlOf(String path) throws IOException {
+		return new File(this.gradleBuild.getProjectDir().getCanonicalFile(), path).toURI()
+				.toURL().toString();
+	}
+
+}

spring-boot-tools/spring-boot-gradle-plugin/src/test/java/org/springframework/boot/gradle/testkit/GradleBuild.java

@@ -39,6 +39,7 @@ import org.junit.runner.Description;
 import org.junit.runners.model.Statement;
 import org.xml.sax.InputSource;
 
+import org.springframework.asm.ClassVisitor;
 import org.springframework.boot.loader.tools.LaunchScript;
 
 /**
@@ -106,6 +107,7 @@ public class GradleBuild implements TestRule {
 		return absolutePath("bin") + "," + absolutePath("build/classes/main") + ","
 				+ absolutePath("build/resources/main") + ","
 				+ pathOfJarContaining(LaunchScript.class) + ","
+				+ pathOfJarContaining(ClassVisitor.class) + ","
 				+ pathOfJarContaining(DependencyManagementPlugin.class);
 	}