324 lines
13 KiB
Java
324 lines
13 KiB
Java
/*
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* Copyright (c) 2023, 2024, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 8304400 8332226
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* @summary Test source launcher running Java programs contained in one module
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* @modules jdk.compiler/com.sun.tools.javac.launcher
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* @run junit ModuleSourceLauncherTests
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*/
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import static org.junit.jupiter.api.Assertions.*;
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import org.junit.jupiter.api.Test;
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import org.junit.jupiter.api.io.TempDir;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.util.List;
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import java.util.Set;
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import java.util.spi.ToolProvider;
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class ModuleSourceLauncherTests {
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@Test
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void testHelloModularWorld(@TempDir Path base) throws Exception {
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var packageFolder = Files.createDirectories(base.resolve("com/greetings"));
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var mainFile = Files.writeString(packageFolder.resolve("Main.java"),
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"""
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package com.greetings;
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public class Main {
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public static void main(String... args) {
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System.out.println("Greetings!");
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System.out.println(" module -> " + Main.class.getModule().getName());
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System.out.println(" package -> " + Main.class.getPackageName());
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System.out.println(" class -> " + Main.class.getSimpleName());
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}
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}
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""");
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Files.writeString(base.resolve("module-info.java"),
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"""
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module com.greetings {}
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""");
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var run = Run.of(mainFile);
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assertAll("Run -> " + run,
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() -> assertLinesMatch(
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"""
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Greetings!
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module -> com.greetings
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package -> com.greetings
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class -> Main
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""".lines(),
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run.stdOut().lines()),
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() -> assertTrue(run.stdErr().isEmpty()),
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() -> assertNull(run.exception())
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);
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var module = run.result().programClass().getModule();
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assertEquals("com.greetings", module.getName());
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var reference = module.getLayer().configuration().findModule(module.getName()).orElseThrow().reference();
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try (var reader = reference.open()) {
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assertLinesMatch(
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"""
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com/
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com/greetings/
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com/greetings/Main.class
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com/greetings/Main.java
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module-info.class
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module-info.java
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""".lines(),
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reader.list());
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}
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}
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@Test
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void testTwoAndHalfPackages(@TempDir Path base) throws Exception {
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var fooFolder = Files.createDirectories(base.resolve("foo"));
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var program = Files.writeString(fooFolder.resolve("Main.java"),
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"""
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package foo;
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public class Main {
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public static void main(String... args) throws Exception {
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var module = Main.class.getModule();
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System.out.println("To the " + bar.Bar.class + " from " + module);
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try (var stream = module.getResourceAsStream("baz/baz.txt")) {
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System.out.println(new String(stream.readAllBytes()));
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}
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}
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}
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""");
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var barFolder = Files.createDirectories(base.resolve("bar"));
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Files.writeString(barFolder.resolve("Bar.java"), "package bar; public record Bar() {}");
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var bazFolder = Files.createDirectories(base.resolve("baz"));
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Files.writeString(bazFolder.resolve("baz.txt"), "baz");
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var badFolder = Files.createDirectories(base.resolve(".bad"));
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Files.writeString(badFolder.resolve("bad.txt"), "bad");
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Files.writeString(base.resolve("module-info.java"),
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"""
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module m {
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exports foo;
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exports bar;
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opens baz;
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}
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""");
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var run = Run.of(program);
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var result = run.result();
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assertAll("Run -> " + run,
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() -> assertLinesMatch(
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"""
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To the class bar.Bar from module m
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baz
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""".lines(),
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run.stdOut().lines()),
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() -> assertTrue(run.stdErr().isEmpty()),
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() -> assertNull(run.exception()),
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() -> assertEquals(Set.of("foo", "bar", "baz"), result.programClass().getModule().getPackages())
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);
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var module = run.result().programClass().getModule();
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assertEquals("m", module.getName());
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var reference = module.getLayer().configuration().findModule(module.getName()).orElseThrow().reference();
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try (var reader = reference.open()) {
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var actual = reader.list().toList();
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assertLinesMatch(
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"""
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.bad/
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.bad/bad.txt
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bar/
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bar/Bar.class
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bar/Bar.java
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baz/
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baz/baz.txt
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foo/
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foo/Main.class
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foo/Main.java
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module-info.class
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module-info.java
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""".lines().toList(),
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actual, "Actual lines -> " + actual);
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}
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}
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@Test
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void testUserModuleOnModulePath(@TempDir Path base) throws Exception {
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Files.createDirectories(base.resolve("foo", "foo"));
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Files.writeString(base.resolve("foo", "module-info.java"),
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"""
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module foo {
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exports foo;
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}
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""");
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Files.writeString(base.resolve("foo", "foo", "Foo.java"),
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"""
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package foo;
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public record Foo() {}
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""");
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var javac = ToolProvider.findFirst("javac").orElseThrow();
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javac.run(System.out, System.err, "--module-source-path", base.toString(), "--module", "foo", "-d", base.toString());
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Files.createDirectories(base.resolve("bar", "bar"));
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Files.writeString(base.resolve("bar", "module-info.java"),
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"""
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module bar {
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requires foo;
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}
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""");
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Files.writeString(base.resolve("bar", "bar","Prog1.java"),
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"""
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package bar;
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class Prog1 {
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public static void main(String... args) {
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System.out.println(new foo.Foo());
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}
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}
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""");
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var command = List.of(
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Path.of(System.getProperty("java.home"), "bin", "java").toString(),
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"-p", ".",
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"bar/bar/Prog1.java");
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var redirectedOut = base.resolve("out.redirected");
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var redirectedErr = base.resolve("err.redirected");
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var process = new ProcessBuilder(command)
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.directory(base.toFile())
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.redirectOutput(redirectedOut.toFile())
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.redirectError(redirectedErr.toFile())
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.start();
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var code = process.waitFor();
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var out = Files.readAllLines(redirectedOut);
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var err = Files.readAllLines(redirectedErr);
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assertAll(
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() -> assertEquals(0, code),
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() -> assertLinesMatch(
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"""
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Foo[]
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""".lines(), out.stream()),
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() -> assertTrue(err.isEmpty())
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);
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}
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@Test
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void testServiceLoading(@TempDir Path base) throws Exception {
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var packageFolder = Files.createDirectories(base.resolve("p"));
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var mainFile = Files.writeString(packageFolder.resolve("Main.java"),
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"""
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package p;
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import java.util.ServiceLoader;
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import java.util.spi.ToolProvider;
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class Main {
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public static void main(String... args) throws Exception {
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System.out.println(Main.class + " in " + Main.class.getModule());
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System.out.println("1");
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System.out.println(Main.class.getResource("/p/Main.java"));
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System.out.println(Main.class.getResource("/p/Main.class"));
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System.out.println("2");
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System.out.println(Main.class.getResource("/p/Tool.java"));
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System.out.println(Main.class.getResource("/p/Tool.class"));
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System.out.println("3");
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System.out.println(ToolProvider.findFirst("p.Tool")); // empty due to SCL being used
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System.out.println("4");
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listToolProvidersIn(Main.class.getModule().getLayer());
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System.out.println("5");
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Class.forName("p.Tool"); // trigger compilation of "p/Tool.java"
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System.out.println(Main.class.getResource("/p/Tool.class"));
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System.out.println("6");
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listToolProvidersIn(Main.class.getModule().getLayer());
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}
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static void listToolProvidersIn(ModuleLayer layer) {
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try {
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ServiceLoader.load(layer, ToolProvider.class).stream()
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.filter(service -> service.type().getModule().getLayer() == layer)
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.map(ServiceLoader.Provider::get)
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.forEach(System.out::println);
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} catch (java.util.ServiceConfigurationError error) {
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error.printStackTrace(System.err);
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}
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}
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}
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""");
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Files.writeString(packageFolder.resolve("Tool.java"),
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"""
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package p;
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import java.io.PrintWriter;
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import java.util.spi.ToolProvider;
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public record Tool(String name) implements ToolProvider {
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public static void main(String... args) {
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System.exit(new Tool().run(System.out, System.err, args));
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}
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public Tool() {
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this(Tool.class.getName());
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}
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@Override
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public int run(PrintWriter out, PrintWriter err, String... args) {
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out.println(name + "/out");
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err.println(name + "/err");
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return 0;
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}
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}
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""");
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Files.writeString(base.resolve("module-info.java"),
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"""
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module m {
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uses java.util.spi.ToolProvider;
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provides java.util.spi.ToolProvider with p.Tool;
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}
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""");
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var run = Run.of(mainFile);
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assertAll("Run -> " + run,
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() -> assertLinesMatch(
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"""
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class p.Main in module m
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1
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.*/p/Main.java
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.*:p/Main.class
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2
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.*/p/Tool.java
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null
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3
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Optional.empty
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4
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Tool[name=p.Tool]
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5
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.*:p/Tool.class
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6
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Tool[name=p.Tool]
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""".lines(),
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run.stdOut().lines()),
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() -> assertTrue(run.stdErr().isEmpty()),
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() -> assertNull(run.exception())
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);
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}
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}
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