Improve ProjectGenerator tests

initializr/src/main/resources/templates/starter-build.gradle

@@ -23,7 +23,7 @@ apply plugin: 'war'
 
 <% if (packaging=='war') {  %>war<% } else { %>jar<% } %> {
     baseName = '${artifactId}'
-    version =  '${version}'
+    version = '${version}'
 }
 sourceCompatibility = ${javaVersion}
 targetCompatibility = ${javaVersion}

initializr/src/test/groovy/io/spring/initializr/ProjectGeneratorTests.groovy

@@ -16,16 +16,23 @@
 
 package io.spring.initializr
 
+import io.spring.initializr.support.GradleBuildAssert
 import io.spring.initializr.support.InitializrMetadataBuilder
 import io.spring.initializr.support.PomAssert
+import io.spring.initializr.support.ProjectAssert
 import org.junit.Before
+import org.junit.Rule
 import org.junit.Test
+import org.junit.rules.TemporaryFolder
 
 /**
  * @author Stephane Nicoll
  */
 class ProjectGeneratorTests {
 
+	@Rule
+	public final TemporaryFolder folder = new TemporaryFolder()
+
 	private final ProjectGenerator projectGenerator = new ProjectGenerator()
 
 	@Before
@@ -33,6 +40,7 @@ class ProjectGeneratorTests {
 		InitializrMetadata metadata = InitializrMetadataBuilder.withDefaults()
 				.addDependencyGroup('test', 'web', 'security', 'data-jpa', 'aop', 'batch', 'integration').validateAndGet()
 		projectGenerator.metadata = metadata
+		projectGenerator.tmpdir = folder.newFolder().getAbsolutePath()
 	}
 
 	@Test
@@ -42,6 +50,19 @@ class ProjectGeneratorTests {
 				.hasNoRepository().hasSpringBootStarterDependency('web')
 	}
 
+	@Test
+	void defaultGradleBuild() {
+		ProjectRequest request = createProjectRequest('web')
+		generateGradleBuild(request)
+	}
+
+	@Test
+	void defaultProject() {
+		ProjectRequest request = createProjectRequest('web')
+		generateProject(request).isJavaProject().isMavenProject().pomAssert()
+				.hasStartClass('demo.Application').hasNoRepository().hasSpringBootStarterDependency('web')
+	}
+
 	@Test
 	void mavenPomWithBootSnapshot() {
 		ProjectRequest request = createProjectRequest('web')
@@ -106,7 +127,17 @@ class ProjectGeneratorTests {
 
 	PomAssert generateMavenPom(ProjectRequest request) {
 		String content = new String(projectGenerator.generateMavenPom(request))
-		return new PomAssert(content).validateProjectRequest(request)
+		new PomAssert(content).validateProjectRequest(request)
+	}
+
+	GradleBuildAssert generateGradleBuild(ProjectRequest request) {
+		String content = new String(projectGenerator.generateGradleBuild(request))
+		new GradleBuildAssert(content).validateProjectRequest(request)
+	}
+
+	ProjectAssert generateProject(ProjectRequest request) {
+		File dir = projectGenerator.generateProjectStructure(request)
+		new ProjectAssert(dir)
 	}
 
 	ProjectRequest createProjectRequest(String... styles) {

initializr/src/test/groovy/io/spring/initializr/support/GradleBuildAssert.groovy

@@ -0,0 +1,67 @@
+/*
+ * 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 io.spring.initializr.support
+
+import io.spring.initializr.ProjectRequest
+
+import static org.junit.Assert.assertTrue
+
+/**
+ * Very simple assertions for the gradle build.
+ *
+ * @author Stephane Nicoll
+ * @since 1.0
+ */
+class GradleBuildAssert {
+
+	private final String content
+
+	GradleBuildAssert(String content) {
+		this.content = content
+	}
+
+	/**
+	 * Validate that this generated gradle build validates against its request.
+	 */
+	GradleBuildAssert validateProjectRequest(ProjectRequest request) {
+		hasArtifactId(request.artifactId).hasVersion(request.version).
+				hasBootVersion(request.bootVersion).hasJavaVersion(request.javaVersion)
+
+	}
+
+	GradleBuildAssert hasArtifactId(String artifactId) {
+		contains('baseName = \'' + artifactId + '\'')
+	}
+
+	GradleBuildAssert hasVersion(String version) {
+		contains('version = \'' + version + '\'')
+	}
+
+	GradleBuildAssert hasBootVersion(String bootVersion) {
+		contains('springBootVersion = \'' + bootVersion + '\'')
+	}
+
+	GradleBuildAssert hasJavaVersion(String javaVersion) {
+		contains('sourceCompatibility = ' + javaVersion + '')
+		contains('targetCompatibility = ' + javaVersion + '')
+	}
+
+	GradleBuildAssert contains(String expression) {
+		assertTrue expression + ' has not been found in gradle build', content.contains(expression)
+		this
+	}
+}