test/tools/javac/modules/AnnotationProcessorsInModulesTest.java

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/**
 * @test
 * @summary Verify that annotation processors inside modules works
 * @library /tools/lib
 * @modules
 *      jdk.compiler/com.sun.tools.javac.api
 *      jdk.compiler/com.sun.tools.javac.main
 *      jdk.jdeps/com.sun.tools.javap
 * @build ToolBox ModuleTestBase
 * @run main AnnotationProcessorsInModulesTest
 */

import java.nio.file.Files;
import java.nio.file.Path;
import java.util.Arrays;
import java.util.List;

public class AnnotationProcessorsInModulesTest extends ModuleTestBase {

    public static void main(String... args) throws Exception {
        new AnnotationProcessorsInModulesTest().runTests();
    }

    private static final String annotationProcessorModule1 =
            "module anno_proc1 {\n" +
            "    requires java.compiler;\n" +
            "\n" +
            "    provides javax.annotation.processing.Processor\n" +
            "      with mypkg1.MyProcessor1;\n" +
            "}";

    private static final String annotationProcessorModule2 =
            "module anno_proc2 {\n" +
            "    requires java.compiler;\n" +
            "\n" +
            "    provides javax.annotation.processing.Processor\n" +
            "      with mypkg2.MyProcessor2;\n" +
            "}";

    private static final String annotationProcessor1 =
            "package mypkg1;\n" +
            "\n" +
            "import javax.annotation.processing.AbstractProcessor;\n" +
            "import javax.annotation.processing.RoundEnvironment;\n" +
            "import javax.annotation.processing.SupportedAnnotationTypes;\n" +
            "import javax.lang.model.SourceVersion;\n" +
            "import javax.lang.model.element.*;\n" +
            "\n" +
            "import java.util.*;\n" +
            "\n" +
            "@SupportedAnnotationTypes(\"*\")\n" +
            "public final class MyProcessor1 extends AbstractProcessor {\n" +
            "\n" +
            "    @Override\n" +
            "    public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {\n" +
            "        return false;\n" +
            "    }\n" +
            "\n" +
            "    @Override\n" +
            "    public SourceVersion getSupportedSourceVersion() {\n" +
            "        System.out.println(\"the annotation processor 1 is working!\");\n" +
            "        return SourceVersion.latest();\n" +
            "    }\n" +
            "}";

    private static final String annotationProcessor2 =
            "package mypkg2;\n" +
            "\n" +
            "import javax.annotation.processing.AbstractProcessor;\n" +
            "import javax.annotation.processing.RoundEnvironment;\n" +
            "import javax.annotation.processing.SupportedAnnotationTypes;\n" +
            "import javax.lang.model.SourceVersion;\n" +
            "import javax.lang.model.element.*;\n" +
            "\n" +
            "import java.util.*;\n" +
            "\n" +
            "@SupportedAnnotationTypes(\"*\")\n" +
            "public final class MyProcessor2 extends AbstractProcessor {\n" +
            "\n" +
            "    @Override\n" +
            "    public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {\n" +
            "        return false;\n" +
            "    }\n" +
            "\n" +
            "    @Override\n" +
            "    public SourceVersion getSupportedSourceVersion() {\n" +
            "        System.out.println(\"the annotation processor 2 is working!\");\n" +
            "        return SourceVersion.latest();\n" +
            "    }\n" +
            "}";

    private static final String testClass = "class Test{}";

    void initialization(Path base) throws Exception {
        moduleSrc = base.resolve("anno_proc_src");
        Path anno_proc1 = moduleSrc.resolve("anno_proc1");
        Path anno_proc2 = moduleSrc.resolve("anno_proc2");

        processorCompiledModules = base.resolve("mods");

        Files.createDirectories(processorCompiledModules);

        tb.writeJavaFiles(
                anno_proc1,
                annotationProcessorModule1,
                annotationProcessor1);

        tb.writeJavaFiles(
                anno_proc2,
                annotationProcessorModule2,
                annotationProcessor2);

        String log = tb.new JavacTask()
                .options("-modulesourcepath", moduleSrc.toString())
                .outdir(processorCompiledModules)
                .files(findJavaFiles(moduleSrc))
                .run()
                .writeAll()
                .getOutput(ToolBox.OutputKind.DIRECT);

        if (!log.isEmpty()) {
            throw new AssertionError("Unexpected output: " + log);
        }

        classes = base.resolve("classes");
        Files.createDirectories(classes);
    }

    Path processorCompiledModules;
    Path moduleSrc;
    Path classes;

    @Test
    void testUseOnlyOneProcessor(Path base) throws Exception {
        initialization(base);
        String log = tb.new JavacTask()
                .options("-processormodulepath", processorCompiledModules.toString(),
                        "-processor", "mypkg2.MyProcessor2")
                .outdir(classes)
                .sources(testClass)
                .run()
                .writeAll()
                .getOutput(ToolBox.OutputKind.STDOUT);
        if (!log.trim().equals("the annotation processor 2 is working!")) {
            throw new AssertionError("Unexpected output: " + log);
        }
    }

    @Test
    void testAnnotationProcessorExecutionOrder(Path base) throws Exception {
        initialization(base);
        List<String> log = tb.new JavacTask()
                .options("-processormodulepath", processorCompiledModules.toString(),
                        "-processor", "mypkg1.MyProcessor1,mypkg2.MyProcessor2")
                .outdir(classes)
                .sources(testClass)
                .run()
                .writeAll()
                .getOutputLines(ToolBox.OutputKind.STDOUT);
        if (!log.equals(Arrays.asList("the annotation processor 1 is working!",
                                      "the annotation processor 2 is working!"))) {
            throw new AssertionError("Unexpected output: " + log);
        }

        log = tb.new JavacTask()
                .options("-processormodulepath", processorCompiledModules.toString(),
                        "-processor", "mypkg2.MyProcessor2,mypkg1.MyProcessor1")
                .outdir(classes)
                .sources(testClass)
                .run()
                .writeAll()
                .getOutputLines(ToolBox.OutputKind.STDOUT);
        if (!log.equals(Arrays.asList("the annotation processor 2 is working!",
                                      "the annotation processor 1 is working!"))) {
            throw new AssertionError("Unexpected output: " + log);
        }
    }

    @Test
    void testErrorOutputIfOneProcessorNameIsIncorrect(Path base) throws Exception {
        initialization(base);
        String log = tb.new JavacTask()
                .options("-XDrawDiagnostics", "-processormodulepath", processorCompiledModules.toString(),
                         "-processor", "mypkg2.MyProcessor2,noPackage.noProcessor,mypkg1.MyProcessor1")
                .outdir(classes)
                .sources(testClass)
                .run(ToolBox.Expect.FAIL)
                .writeAll()
                .getOutputLines(ToolBox.OutputKind.STDOUT, ToolBox.OutputKind.DIRECT).toString();
        if (!log.trim().equals("[the annotation processor 2 is working!, - compiler.err.proc.processor.not.found: noPackage.noProcessor, 1 error]")) {
            throw new AssertionError("Unexpected output: " + log);
        }
    }

    @Test
    void testOptionsExclusion(Path base) throws Exception {
        initialization(base);
        List<String> log = tb.new JavacTask()
                .options("-XDrawDiagnostics", "-processormodulepath", processorCompiledModules.toString(),
                        "-processorpath", processorCompiledModules.toString())
                .outdir(classes)
                .sources(testClass)
                .run(ToolBox.Expect.FAIL)
                .writeAll()
                .getOutputLines(ToolBox.OutputKind.DIRECT);
        if (!log.equals(Arrays.asList("- compiler.err.processorpath.no.processormodulepath",
                                      "1 error"))) {
            throw new AssertionError("Unexpected output: " + log);
        }
    }
}