IntersectionPropertiesTest.java revision 2199:7c89d200781b 
1/*
2 * Copyright (c) 2012, 2013, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
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
16 * 2 along with this work; if not, write to the Free Software Foundation,
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
21 * questions.
22 */
23
24/*
25 * @test
26 * @bug 6499673
27 * @library /tools/javac/lib
28 * @build JavacTestingAbstractProcessor IntersectionPropertiesTest
29 * @run main IntersectionPropertiesTest
30 * @summary Assertion check for TypeVariable.getUpperBound() fails
31 */
32
33import com.sun.source.util.*;
34import com.sun.tools.javac.util.Assert;
35import javax.annotation.processing.*;
36import javax.lang.model.type.*;
37import javax.lang.model.util.ElementFilter;
38import javax.lang.model.element.*;
39import javax.tools.*;
40import java.util.*;
41import java.io.*;
42import javax.lang.model.util.Types;
43
44public class IntersectionPropertiesTest {
45
46    private int errors = 0;
47    private static final String Intersection_name = "IntersectionTest.java";
48    private static final String Intersection_contents =
49        "import java.util.AbstractList;\n" +
50        "import java.util.List;\n" +
51        "import java.io.Serializable;\t" +
52        "public class IntersectionTest<S extends List & Serializable, One extends AbstractList & Runnable & Serializable, Two extends AbstractList & Serializable & Runnable> {\n" +
53        "  void method(S s, One o, Two t) { }\n" +
54        "  public static abstract class SubType extends AbstractList implements Runnable, Serializable { } \n" +
55        "}";
56
57    private static final File classesdir = new File("intersectionproperties");
58    private static final JavaCompiler comp =
59        ToolProvider.getSystemJavaCompiler();
60    private static final StandardJavaFileManager fm =
61        comp.getStandardFileManager(null, null, null);
62
63    public void runOne(final String Test_name, final String Test_contents)
64        throws IOException {
65        System.err.println("Testing " + Test_name);
66        final Iterable<? extends JavaFileObject> files =
67            fm.getJavaFileObjectsFromFiles(Collections.singleton(writeFile(classesdir, Test_name, Test_contents)));
68        final JavacTask ct =
69            (JavacTask)comp.getTask(null, fm, null, null, null, files);
70        ct.setProcessors(Collections.singleton(new TestProcessor()));
71
72        if (!ct.call()) {
73            System.err.println("Compilation unexpectedly failed");
74            errors++;
75        }
76    }
77
78    public void run() throws IOException {
79        runOne(Intersection_name, Intersection_contents);
80
81        if (0 != errors)
82            throw new RuntimeException(errors + " errors occurred");
83    }
84
85    public static void main(String... args) throws IOException {
86        new IntersectionPropertiesTest().run();
87    }
88
89    private static File writeFile(File dir, String path, String body)
90        throws IOException {
91        File f = new File(dir, path);
92        f.getParentFile().mkdirs();
93        try (FileWriter out = new FileWriter(f)) {
94            out.write(body);
95        }
96        return f;
97    }
98
99    private class TestProcessor extends JavacTestingAbstractProcessor {
100
101        private Set<? extends Element> rootElements;
102
103        public boolean process(Set<? extends TypeElement> annotations, RoundEnvironment roundEnv) {
104            rootElements = roundEnv.getRootElements();
105            if (!rootElements.isEmpty()) {
106                performCheck();
107            }
108            return true;
109        }
110
111        private void performCheck() {
112            TypeElement typeElement = (TypeElement) rootElements.iterator().next();
113            ExecutableElement method = ElementFilter.methodsIn(typeElement.getEnclosedElements()).get(0);
114            TypeVariable typeVariable = (TypeVariable) method.getParameters().get(0).asType();
115
116            final TypeMirror upperBound = typeVariable.getUpperBound();
117
118            TypeParameterElement typeParameterElement = ((TypeParameterElement) typeVariable.asElement());
119            final List<? extends TypeMirror> bounds = typeParameterElement.getBounds();
120            Types types = processingEnv.getTypeUtils();
121            final HashSet<TypeMirror> actual = new HashSet<TypeMirror>(types.directSupertypes(upperBound));
122            final HashSet<TypeMirror> expected = new HashSet<TypeMirror>(bounds);
123            if (!expected.equals(actual)) {
124                System.err.println("Mismatched expected and actual bounds.");
125                System.err.println("Expected:");
126                for(TypeMirror tm : expected)
127                    System.err.println("  " + tm);
128                System.err.println("Actual:");
129                for(TypeMirror tm : actual)
130                    System.err.println("  " + tm);
131                errors++;
132            }
133
134            TypeVariable oneTypeVariable = (TypeVariable) method.getParameters().get(1).asType();
135            TypeMirror oneUpperBound = oneTypeVariable.getUpperBound();
136            TypeVariable twoTypeVariable = (TypeVariable) method.getParameters().get(2).asType();
137            TypeMirror twoUpperBound = twoTypeVariable.getUpperBound();
138            TypeElement oneUpperBoundElement = (TypeElement) types.asElement(oneUpperBound);
139
140            Assert.checkNonNull(oneUpperBoundElement);
141
142            Assert.check("java.util.AbstractList".equals(oneUpperBoundElement.getSuperclass().toString()),
143                         oneUpperBoundElement.getSuperclass().toString());
144
145            List<String> superInterfaces = new java.util.ArrayList<>();
146
147            for (TypeMirror tm : oneUpperBoundElement.getInterfaces()) {
148                superInterfaces.add(tm.toString());
149            }
150
151            Assert.check(java.util.Arrays.asList("java.lang.Runnable",
152                                                 "java.io.Serializable").equals(superInterfaces),
153                         superInterfaces);
154
155            Assert.check(types.isSameType(upperBound, types.capture(upperBound)));
156            Assert.check(types.isSameType(types.erasure(typeVariable), types.erasure(upperBound)));
157
158            TypeElement subTypeClass = processingEnv.getElementUtils().getTypeElement("IntersectionTest.SubType");
159
160            Assert.checkNonNull(subTypeClass);
161
162            Assert.check(types.isAssignable(subTypeClass.asType(), oneUpperBound));
163            Assert.check(types.isSameType(oneUpperBound, twoUpperBound));
164            Assert.check(!types.isSameType(upperBound, twoUpperBound));
165            Assert.check(types.isSubtype(subTypeClass.asType(), oneUpperBound));
166            Assert.check(types.isSubtype(oneUpperBound, upperBound));
167        }
168
169    }
170
171}
172