jdk-24/langtools/test/tools/javah/ModuleClass.java

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/*
 * @test
 * @bug 8049811
 * @summary javah should accept module/class names
 * @library /tools/lib
 * @modules jdk.compiler/com.sun.tools.javac.api
 *          jdk.compiler/com.sun.tools.javac.main
 *          jdk.compiler/com.sun.tools.javah
 * @build toolbox.ToolBox toolbox.JavahTask
 * @run main ModuleClass
 */

import java.util.List;

import toolbox.JavahTask;
import toolbox.ToolBox;

public class ModuleClass {
    static public void main(String[] args) throws Exception {
        ToolBox tb = new ToolBox();
        check(tb, "java.lang.Object");
        check(tb, "java.base/java.io.File");
    }

    static void check(ToolBox tb, String name) throws Exception {
        new JavahTask(tb)
                .classes(name)
                .run();

        int sep = name.indexOf("/");
        String className = (sep == -1) ? name : name.substring(sep + 1);
        String file = className.replace(".", "_") + ".h";
        List<String> outObject = tb.readAllLines(file);

        String text = "#ifndef _Included_" + className.replace(".", "_");
        if (!outObject.contains(text)) {
            throw new Exception("expected line not found");
        }
    }
}