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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

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 *

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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

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 *

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 * 2 along with this work; if not, write to the Free Software Foundation,

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/*

 * @test

 * @bug 4263768 4785453

 * @summary Verify that the compiler does not crash when java.lang is not available

 * @library /tools/lib

 * @modules jdk.compiler/com.sun.tools.javac.api

 *          jdk.compiler/com.sun.tools.javac.main

 * @build toolbox.ToolBox toolbox.JavacTask

 * @run main NoJavaLangTest

 */

import java.nio.file.*;

import toolbox.JavacTask;

import toolbox.Task;

import toolbox.ToolBox;

public class NoJavaLangTest {

    private static final String noJavaLangSrc =

        "public class NoJavaLang {\n" +

        "    private String s;\n" +

        "\n" +

        "    public String s() {\n" +

        "        return s;\n" +

        "    }\n" +

        "}";

    private static final String compilerErrorMessage =

        "Fatal Error: Unable to find package java.lang in classpath or bootclasspath";

    public static void main(String[] args) throws Exception {

        new NoJavaLangTest().run();

    }

    final ToolBox tb = new ToolBox();

    void run() throws Exception {

        testStandard();

        testBootClassPath();

        testModulePath();

    }

    // sanity check, with java.lang available

    void testStandard() {

        new JavacTask(tb)

                .sources(noJavaLangSrc)

                .run();

    }

    // test with bootclasspath, for as long as its around

    void testBootClassPath() {

        String[] bcpOpts = { "-Xlint:-options", "-source", "8", "-bootclasspath", "." };

        test(bcpOpts, compilerErrorMessage);

    }

    // test with module path

    void testModulePath() throws Exception {

        // need to ensure there is an empty java.base to avoid different error message

        Files.createDirectories(Paths.get("modules/java.base"));

        new JavacTask(tb)

                .sources("module java.base { }")

                .outdir("modules/java.base")

                .run();

        // ideally we'd have a better message for this case

        test(mpOpts, compilerErrorMessage);

    }

    private void test(String[] options, String expect) {

        System.err.println("Testing " + java.util.Arrays.toString(options));

        String out = new JavacTask(tb)

                .options(options)

                .sources(noJavaLangSrc)

                .run(Task.Expect.FAIL, 3)

                .writeAll()

                .getOutput(Task.OutputKind.DIRECT);

        if (!out.trim().equals(expect)) {

            throw new AssertionError("javac generated error output is not correct");

        }

        System.err.println("OK");

    }

}