| /* |
| * Copyright 2021 Google LLC |
| * |
| * 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.google.auto.value; |
| |
| import static com.google.common.truth.Truth.assertThat; |
| import static java.nio.charset.StandardCharsets.UTF_8; |
| |
| import com.google.common.collect.ImmutableList; |
| import java.io.File; |
| import java.io.IOException; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.nio.file.Paths; |
| import java.util.Optional; |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| import java.util.stream.Stream; |
| import org.gradle.testkit.runner.BuildResult; |
| import org.gradle.testkit.runner.GradleRunner; |
| import org.gradle.util.GradleVersion; |
| import org.junit.Rule; |
| import org.junit.Test; |
| import org.junit.rules.TemporaryFolder; |
| import org.junit.runner.RunWith; |
| import org.junit.runners.JUnit4; |
| |
| @RunWith(JUnit4.class) |
| public class GradleTest { |
| @Rule public TemporaryFolder fakeProject = new TemporaryFolder(); |
| |
| private static final String BUILD_GRADLE_TEXT = |
| String.join( |
| "\n", |
| "plugins {", |
| " id 'java-library'", |
| "}", |
| "repositories {", |
| " maven { url = uri('${localRepository}') }", |
| "}", |
| "dependencies {", |
| " compileOnlyApi " |
| + " 'com.google.auto.value:auto-value-annotations:${autoValueVersion}'", |
| " annotationProcessor 'com.google.auto.value:auto-value:${autoValueVersion}'", |
| "}"); |
| |
| private static final String FOO_TEXT = |
| String.join( |
| "\n", |
| "package com.example;", |
| "", |
| "import com.google.auto.value.AutoValue;", |
| "", |
| "@AutoValue", |
| "abstract class Foo {", |
| " abstract String bar();", |
| "", |
| " static Foo of(String bar) {", |
| " return new AutoValue_Foo(bar);", |
| " }", |
| "}"); |
| |
| private static final Optional<File> GRADLE_INSTALLATION = getGradleInstallation(); |
| |
| @Test |
| public void basic() throws IOException { |
| String autoValueVersion = System.getProperty("autoValueVersion"); |
| assertThat(autoValueVersion).isNotNull(); |
| String localRepository = System.getProperty("localRepository"); |
| assertThat(localRepository).isNotNull(); |
| |
| // Set up the fake Gradle project. |
| String buildGradleText = expandSystemProperties(BUILD_GRADLE_TEXT); |
| writeFile(fakeProject.newFile("build.gradle").toPath(), buildGradleText); |
| Path srcDir = fakeProject.newFolder("src", "main", "java", "com", "example").toPath(); |
| writeFile(srcDir.resolve("Foo.java"), FOO_TEXT); |
| |
| // Build it the first time. |
| BuildResult result1 = buildFakeProject(); |
| assertThat(result1.getOutput()) |
| .contains( |
| "Full recompilation is required because no incremental change information is" |
| + " available"); |
| Path output = |
| fakeProject |
| .getRoot() |
| .toPath() |
| .resolve("build/classes/java/main/com/example/AutoValue_Foo.class"); |
| assertThat(Files.exists(output)).isTrue(); |
| |
| // Add a source file to the project. |
| String barText = FOO_TEXT.replace("Foo", "Bar"); |
| Path barFile = srcDir.resolve("Bar.java"); |
| writeFile(barFile, barText); |
| |
| // Build it a second time. |
| BuildResult result2 = buildFakeProject(); |
| assertThat(result2.getOutput()).doesNotContain("Full recompilation is required"); |
| |
| // Remove the second source file and build a third time. If incremental annotation processing |
| // is not working, this will produce a message like this: |
| // Full recompilation is required because com.google.auto.value.processor.AutoValueProcessor |
| // is not incremental |
| Files.delete(barFile); |
| BuildResult result3 = buildFakeProject(); |
| assertThat(result3.getOutput()).doesNotContain("Full recompilation is required"); |
| } |
| |
| private BuildResult buildFakeProject() throws IOException { |
| GradleRunner runner = |
| GradleRunner.create() |
| .withProjectDir(fakeProject.getRoot()) |
| .withArguments("--info", "compileJava"); |
| if (GRADLE_INSTALLATION.isPresent()) { |
| runner.withGradleInstallation(GRADLE_INSTALLATION.get()); |
| } else { |
| runner.withGradleVersion(GradleVersion.current().getVersion()); |
| } |
| return runner.build(); |
| } |
| |
| private static Optional<File> getGradleInstallation() { |
| String gradleHome = System.getenv("GRADLE_HOME"); |
| if (gradleHome != null) { |
| File gradleHomeFile = new File(gradleHome); |
| if (gradleHomeFile.isDirectory()) { |
| return Optional.of(new File(gradleHome)); |
| } |
| } |
| try { |
| Path gradleExecutable = Paths.get("/usr/bin/gradle"); |
| Path gradleLink = gradleExecutable.resolveSibling(Files.readSymbolicLink(gradleExecutable)); |
| if (!gradleLink.endsWith("bin/gradle")) { |
| return Optional.empty(); |
| } |
| Path installationPath = gradleLink.getParent().getParent(); |
| if (!Files.isDirectory(installationPath)) { |
| return Optional.empty(); |
| } |
| Optional<Path> coreJar; |
| Pattern corePattern = Pattern.compile("gradle-core-([0-9]+)\\..*\\.jar"); |
| try (Stream<Path> files = Files.walk(installationPath.resolve("lib"))) { |
| coreJar = |
| files |
| .filter( |
| p -> { |
| Matcher matcher = corePattern.matcher(p.getFileName().toString()); |
| if (matcher.matches()) { |
| int version = Integer.parseInt(matcher.group(1)); |
| if (version >= 5) { |
| return true; |
| } |
| } |
| return false; |
| }) |
| .findFirst(); |
| } |
| return coreJar.map(unused -> installationPath.toFile()); |
| } catch (IOException e) { |
| return Optional.empty(); |
| } |
| } |
| |
| private static String expandSystemProperties(String s) { |
| for (String name : System.getProperties().stringPropertyNames()) { |
| String value = System.getProperty(name); |
| s = s.replace("${" + name + "}", value); |
| } |
| return s; |
| } |
| |
| private static void writeFile(Path file, String text) throws IOException { |
| Files.write(file, ImmutableList.of(text), UTF_8); |
| } |
| } |