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

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/*
 * @test
 * @summary tests for "requires transitive"
 * @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 RequiresTransitiveTest
 */

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

import toolbox.JavacTask;
import toolbox.Task;
import toolbox.ToolBox;

public class RequiresTransitiveTest extends ModuleTestBase {

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

    @Test
    public void testJavaSE_OK(Path base) throws Exception {
        Path src = base.resolve("src");
        tb.writeJavaFiles(src,
                "module m { requires java.se; }",
                "import java.awt.Frame;\n"  // in java.se
                + "class Test {\n"
                + "    Frame f;\n"
                + "}");
        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 java.se; }",
                "import com.sun.source.tree.Tree;\n" // not in java.se (in jdk.compiler)
                + "class Test {\n"
                + "    Tree t;\n"
                + "}");
        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;\n",
                "C5 c5; C6 c6; C7 c7;\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)"
        };

        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 -> m5x
     *              -> m6x => m7x
     * where -> is requires, => is requires transitive
     */
    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;\n"
                + "import p2.C2;\n"
                + "import p3.C3;\n"
                + "import p4.C4;\n"
                + m1_extraImports
                + "class C1 {\n"
                + "  C2 c2; C3 c3; C4 c4;\n"
                + m1_extraUses
                + "}\n");

        Path src_m2 = src.resolve("m2x");
        tb.writeJavaFiles(src_m2,
                "module m2x {\n"
                + "  requires transitive m3x;\n"
                + "  requires        m6x;\n"
                + "  exports p2;\n"
                + "}",
                "package p2;\n"
                + "public class C2 { }\n");

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

        Path src_m4 = src.resolve("m4x");
        tb.writeJavaFiles(src_m4,
                "module m4x { requires m5x; exports p4; }",
                "package p4;\n"
                + "public class C4 { }\n");

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

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

        Path src_m7 = src.resolve("m7x");
        tb.writeJavaFiles(src_m7,
                "module m7x { exports p7; }",
                "package p7;\n"
                + "public class C7 { }\n");

        return src;
    }
}