IncCompInheritance.java

/*
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/*
 * @test
 * @bug 8056258
 * @summary Analysis of public API does not take super classes into account
 * @library /tools/lib
 * @modules jdk.compiler/com.sun.tools.javac.api
 *          jdk.compiler/com.sun.tools.javac.main
 *          jdk.compiler/com.sun.tools.sjavac
 * @build Wrapper toolbox.ToolBox
 * @run main Wrapper IncCompInheritance
 */

import java.nio.file.Path;
import java.nio.file.Paths;

public class IncCompInheritance extends SjavacBase {
    public static void main(String... args) throws Exception {

        Path root = Paths.get(IncCompInheritance.class.getSimpleName() + "Test");
        Path src = root.resolve("src");
        Path classes = root.resolve("classes");

        // Prep source files: A <- B <- C
        String a = "package pkga; public class A { public void m() {} }";
        String b = "package pkgb; public class B extends pkga.A {}";
        String c = "package pkgc; public class C extends pkgb.B {{ new pkgb.B().m(); }}";
        toolbox.writeFile(src.resolve("pkga/A.java"), a);
        toolbox.writeFile(src.resolve("pkgb/B.java"), b);
        toolbox.writeFile(src.resolve("pkgc/C.java"), c);

        // Initial compile (should succeed)
        int rc1 = compile("-d", classes, "--state-dir=" + classes, src);
        if (rc1 != 0)
            throw new AssertionError("Compilation failed unexpectedly");

        // Remove method A.m
        Thread.sleep(2500); // Make sure we get a new timestamp
        String aModified = "package pkga; public class A { }";
        toolbox.writeFile(src.resolve("pkga/A.java"), aModified);

        // Incremental compile (C should now be recompiled even though it
        // depends on A only through inheritance via B).
        // Since A.m is removed, this should fail.
        int rc2 = compile("-d", classes, "--state-dir=" + classes, src);
        if (rc2 == 0)
            throw new AssertionError("Compilation succeeded unexpectedly");
    }
}