test/langtools/tools/javac/modules/RequiresStaticTest.java

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/*
 * @test
 * @bug 8161906 8161596
 * @summary tests for "requires static"
 * @library /tools/lib
 * @modules
 *      jdk.compiler/com.sun.tools.javac.api
 *      jdk.compiler/com.sun.tools.javac.main
 * @build toolbox.ToolBox toolbox.JavacTask ModuleTestBase
 * @run main RequiresStaticTest
 */

import java.io.File;
import java.nio.file.Files;
import java.nio.file.Path;

import java.util.List;
import java.util.stream.Collectors;

import toolbox.JavaTask;
import toolbox.JavacTask;
import toolbox.Task;
import toolbox.Task.OutputKind;

public class RequiresStaticTest extends ModuleTestBase {

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

    @Test
    public void testJavaSE_OK(Path base) throws Exception {
        Path src = base.resolve("src");
        tb.writeJavaFiles(src,
                // use class in java.se
                """
                    import java.awt.Frame;
                    class Test {
                        Frame f;
                    }""");
        Path classes = base.resolve("classes");
        Files.createDirectories(classes);

        new JavacTask(tb, Task.Mode.CMDLINE)
                .files(findJavaFiles(src))
                .outdir(classes)
                .run()
                .writeAll();
    }

    @Test
    public void testJavaSE_Fail(Path base) throws Exception {
        Path src = base.resolve("src");
        tb.writeJavaFiles(src,
                "module m { requires static java.se; }",
                // use class not in java.se (in jdk.compiler)
                """
                    import com.sun.source.tree.Tree;
                    class Test {
                        Tree t;
                    }""");
        Path classes = base.resolve("classes");
        Files.createDirectories(classes);

        String log = new JavacTask(tb, Task.Mode.CMDLINE)
                .options("-XDrawDiagnostics")
                .files(findJavaFiles(src))
                .outdir(classes)
                .run(Task.Expect.FAIL)
                .writeAll()
                .getOutput(Task.OutputKind.DIRECT);

        if (!log.contains("Test.java:1:22: compiler.err.package.not.visible: com.sun.source.tree, (compiler.misc.not.def.access.does.not.read: m, com.sun.source.tree, jdk.compiler)"))
            throw new Exception("expected output not found");
    }

    @Test
    public void testComplex_OK(Path base) throws Exception {
        Path src = getComplexSrc(base, "", "");
        Path classes = base.resolve("classes");
        Files.createDirectories(classes);

        new JavacTask(tb, Task.Mode.CMDLINE)
                .options("--module-source-path", src.toString())
                .files(findJavaFiles(src))
                .outdir(classes)
                .run()
                .writeAll();
    }

    @Test
    public void testComplex_Fail(Path base) throws Exception {
        Path src = getComplexSrc(base,
                "import p5.C5; import p6.C6; import p7.C7; import p8.C8;\n",
                "C5 c5; C6 c6; C7 c7; C8 c8;\n");
        Path classes = base.resolve("classes");
        Files.createDirectories(classes);

        String log = new JavacTask(tb, Task.Mode.CMDLINE)
                .options("-XDrawDiagnostics",
                        "--module-source-path", src.toString())
                .files(findJavaFiles(src))
                .outdir(classes)
                .run(Task.Expect.FAIL)
                .writeAll()
                .getOutput(Task.OutputKind.DIRECT);

        String[] expect = {
            "C1.java:5:8: compiler.err.package.not.visible: p5, (compiler.misc.not.def.access.does.not.read: m1x, p5, m5x)",
            "C1.java:5:22: compiler.err.package.not.visible: p6, (compiler.misc.not.def.access.does.not.read: m1x, p6, m6x)",
            "C1.java:5:36: compiler.err.package.not.visible: p7, (compiler.misc.not.def.access.does.not.read: m1x, p7, m7x)",
            "C1.java:5:50: compiler.err.package.not.visible: p8, (compiler.misc.not.def.access.does.not.read: m1x, p8, m8x)"
        };

        for (String e: expect) {
            if (!log.contains(e))
                throw new Exception("expected output not found: " + e);
        }
    }

    /*
     * Set up the following module graph
     *     m1x -> m2x => m3x -=-> m4x --> m5
     *            \           /
     *              \       /
     *                v   v
     *                  m6x => m7x --> m8
     * where -> is requires, => is requires transitive, --> is requires static, -=-> is requires transitive static
     */
    Path getComplexSrc(Path base, String m1_extraImports, String m1_extraUses) throws Exception {
        Path src = base.resolve("src");

        Path src_m1 = src.resolve("m1x");
        tb.writeJavaFiles(src_m1,
                "module m1x { requires m2x; }",
                """
                    package p1;
                    import p2.C2;
                    import p3.C3;
                    import p4.C4;
                    """
                + m1_extraImports
                + """
                    class C1 {
                      C2 c2; C3 c3; C4 c4;
                    """
                + m1_extraUses
                + "}\n");

        Path src_m2 = src.resolve("m2x");
        tb.writeJavaFiles(src_m2,
                """
                    module m2x {
                      requires transitive m3x;
                      requires static m6x;
                      exports p2;
                    }""",
                """
                    package p2;
                    public class C2 {p7.C7 c7; p6.C6 c6; p4.C4 c4;}""");

        Path src_m3 = src.resolve("m3x");
        tb.writeJavaFiles(src_m3,
                "module m3x { requires transitive static m4x; exports p3; }",
                """
                    package p3;
                    public class C3 { }""");

        Path src_m4 = src.resolve("m4x");
        tb.writeJavaFiles(src_m4,
                "module m4x { requires m5x; requires static m6x; exports p4; }",
                """
                    package p4;
                    public class C4 { p6.C6 c6; p7.C7 c7;}""");

        Path src_m5 = src.resolve("m5x");
        tb.writeJavaFiles(src_m5,
                "module m5x { exports p5; }",
                """
                    package p5;
                    public class C5 { }""");

        Path src_m6 = src.resolve("m6x");
        tb.writeJavaFiles(src_m6,
                "module m6x { requires transitive m7x; exports p6; }",
                """
                    package p6;
                    public class C6 { p7.C7 c7; }""");

        Path src_m7 = src.resolve("m7x");
        tb.writeJavaFiles(src_m7,
                "module m7x { requires static m8x; exports p7; }",
                """
                    package p7;
                    public class C7 { p8.C8 c8; }""");

        Path src_m8 = src.resolve("m8x");
        tb.writeJavaFiles(src_m8,
                "module m8x { exports p8; }",
                """
                    package p8;
                    public class C8 { }""");

        return src;
    }

    @Test
    public void testRequiresStatic(Path base) throws Exception {
        Path src = base.resolve("src");
        Path m1 = src.resolve("m1x");
        tb.writeJavaFiles(m1,
                "module m1x { exports m1x; }",
                "package m1x;" +
                "public class Api { }\n");

        Path classes = base.resolve("classes");
        Path m1Classes = classes.resolve("m1x");
        Files.createDirectories(m1Classes);

        new JavacTask(tb, Task.Mode.CMDLINE)
                .files(findJavaFiles(m1))
                .outdir(m1Classes)
                .run()
                .writeAll();

        Path m3 = src.resolve("m3x");
        tb.writeJavaFiles(m3,
                "module m3x { requires static m1x; }",
                """
                    package m3x;
                    public class Test {
                        public static void main(String... args) {
                            try {
                               Class.forName("m1x.Api");
                            } catch (ClassNotFoundException e) {
                                System.err.println("ok");
                            }
                        }
                    }""",
                """
                    package m3x;
                    public class ApiUse{
                        m1x.Api api;
                    }""");

        Path m3Classes = classes.resolve("m3x");
        Files.createDirectories(m3Classes);

        new JavacTask(tb, Task.Mode.CMDLINE)
                .options("--module-path", m1Classes.toString())
                .files(findJavaFiles(m3))
                .outdir(m3Classes)
                .run()
                .writeAll();

        List<String> log = new JavaTask(tb)
                .vmOptions("--module-path", m3Classes.toString(), "--add-modules", "m3x")
                .className("m3x.Test")
                .run()
                .writeAll()
                .getOutputLines(OutputKind.STDERR);
        log = log.stream().filter(s->!s.matches("^Picked up .*JAVA.*OPTIONS:.*")).collect(Collectors.toList());

        tb.checkEqual(log, List.of("ok"));
    }

    @Test
    public void testRequiresTransitiveStatic(Path base) throws Exception {
        Path src = base.resolve("src");
        Path m1 = src.resolve("m1x");
        tb.writeJavaFiles(m1,
                "module m1x { exports m1x; }",
                "package m1x;" +
                "public class Api { }\n");

        Path classes = base.resolve("classes");
        Path m1Classes = classes.resolve("m1x");
        Files.createDirectories(m1Classes);

        new JavacTask(tb, Task.Mode.CMDLINE)
                .files(findJavaFiles(m1))
                .outdir(m1Classes)
                .run()
                .writeAll();

        Path m2 = src.resolve("m2x");
        tb.writeJavaFiles(m2,
                "module m2x { requires transitive static m1x; }");

        Path m2Classes = classes.resolve("m2x");
        Files.createDirectories(m2Classes);

        new JavacTask(tb, Task.Mode.CMDLINE)
                .options("--module-path", m1Classes.toString())
                .files(findJavaFiles(m2))
                .outdir(m2Classes)
                .run()
                .writeAll();

        Path m3 = src.resolve("m3x");
        tb.writeJavaFiles(m3,
                "module m3x { requires m2x; }",
                """
                    package m3x;
                    public class Test {
                        public static void main(String... args) {
                            try {
                               Class.forName("m1x.Api");
                            } catch (ClassNotFoundException e) {
                                System.err.println("ok");
                            }
                        }
                    }""",
                """
                    package m3x;
                    public class ApiUse{
                        m1x.Api api;
                    }""");

        Path m3Classes = classes.resolve("m3x");
        Files.createDirectories(m3Classes);

        new JavacTask(tb, Task.Mode.CMDLINE)
                .options("--module-path", m1Classes.toString() + File.pathSeparator + m2Classes.toString())
                .files(findJavaFiles(m3))
                .outdir(m3Classes)
                .run()
                .writeAll();

        List<String> log = new JavaTask(tb)
                .vmOptions("--module-path", m2Classes.toString() + File.pathSeparator + m3Classes.toString(),
                           "--add-modules", "m3x")
                .className("m3x.Test")
                .run()
                .writeAll()
                .getOutputLines(OutputKind.STDERR);
        log = log.stream().filter(s->!s.matches("^Picked up .*JAVA.*OPTIONS:.*")).collect(Collectors.toList());

        tb.checkEqual(log, List.of("ok"));
    }

    @Test
    public void testRequiresStaticTransitive(Path base) throws Exception {
        Path src = base.resolve("src");
        Path m1 = src.resolve("m1x");
        tb.writeJavaFiles(m1,
                "module m1x { exports m1x; }",
                "package m1x;" +
                "public class Api { }\n");

        Path classes = base.resolve("classes");
        Path m1Classes = classes.resolve("m1x");
        Files.createDirectories(m1Classes);

        new JavacTask(tb, Task.Mode.CMDLINE)
                .files(findJavaFiles(m1))
                .outdir(m1Classes)
                .run()
                .writeAll();

        Path m2 = src.resolve("m2x");
        tb.writeJavaFiles(m2,
                "module m2x { requires transitive static m1x; }");

        Path m2Classes = classes.resolve("m2x");
        Files.createDirectories(m2Classes);

        new JavacTask(tb, Task.Mode.CMDLINE)
                .options("--module-path", m1Classes.toString())
                .files(findJavaFiles(m2))
                .outdir(m2Classes)
                .run()
                .writeAll();
    }
}