1 /*
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   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
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   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
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  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
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  23 
  24 /*
  25  * @test
  26  * @bug 6453386 8216404 8230337
  27  * @summary Test Elements.getPackageOf
  28  * @author  Joseph D. Darcy
  29  * @library /tools/javac/lib
  30  * @modules java.compiler
  31  *          jdk.compiler
  32  * @build   JavacTestingAbstractProcessor TestGetPackageOf
  33  * @compile -processor TestGetPackageOf -proc:only TestGetPackageOf.java
  34  */
  35 
  36 import java.util.*;
  37 import javax.annotation.processing.*;
  38 import javax.lang.model.SourceVersion;
  39 import static javax.lang.model.SourceVersion.*;
  40 import javax.lang.model.element.*;
  41 import javax.lang.model.util.*;
  42 import static javax.lang.model.util.ElementFilter.*;
  43 import static javax.tools.Diagnostic.Kind.*;
  44 import static javax.tools.StandardLocation.*;
  45 
  46 /**
  47  * Test basic workings of Elements.getPackageOf
  48  */
  49 public class TestGetPackageOf extends JavacTestingAbstractProcessor {
  50     /**
  51      * Check expected behavior on classes and packages and other elements.
  52      */
  53     public boolean process(Set<? extends TypeElement> annotations,
  54                            RoundEnvironment roundEnv) {
  55         if (!roundEnv.processingOver()) {
  56             TypeElement    charElt     = eltUtils.getTypeElement("java.lang.Character");
  57             PackageElement javaLangPkg = eltUtils.getPackageElement("java.lang");
  58             PackageElement unnamedPkg  = eltUtils.getPackageElement("");
  59 
  60             Map<Element, PackageElement> testCases =
  61                 Map.of(javaLangPkg, javaLangPkg,
  62                        charElt,     javaLangPkg,
  63                        unnamedPkg,  unnamedPkg);
  64 
  65             for(var testCase : testCases.entrySet()) {
  66                 checkPkg(testCase.getKey(), testCase.getValue());
  67             }
  68 
  69             // The package of fields and methods and nested types of
  70             // java.lang.Character is java.lang.
  71             for (Element e : charElt.getEnclosedElements()) {
  72                 checkPkg(e, javaLangPkg);
  73             }
  74 
  75             // A module has a null package.
  76             checkPkg(eltUtils.getModuleElement("java.base"), null);
  77         }
  78         return true;
  79     }
  80 
  81     private void checkPkg(Element e, PackageElement expectedPkg) {
  82         PackageElement actualPkg = eltUtils.getPackageOf(e);
  83         if (!Objects.equals(actualPkg, expectedPkg)) {
  84             throw new RuntimeException(String.format("Unexpected package ``%s''' for %s %s, expected ``%s''%n",
  85                                                      actualPkg, e.getKind(), e.toString(), expectedPkg));
  86         }
  87     }
  88 }