RuntimeParameterAnnotationsForLambdaTest.java revision 3086:16d09290bb2a 
1/*
2 * Copyright (c) 2015, 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 8044411 8079060 8138612
27 * @summary Tests the RuntimeParameterVisibleAnnotations/RuntimeParameterInvisibleAnnotations attribute.
28 * @library /tools/lib /tools/javac/lib ../lib
29 * @build WorkAnnotations TestBase TestResult InMemoryFileManager ToolBox
30 * @build TestCase ClassType TestAnnotationInfo
31 * @build RuntimeParameterAnnotationsForLambdaTest AnnotationsTestBase RuntimeParameterAnnotationsTestBase
32 * @run main RuntimeParameterAnnotationsForLambdaTest
33 */
34
35import java.util.List;
36import java.util.stream.Collectors;
37
38import com.sun.tools.classfile.*;
39
40/**
41 * RuntimeParameterAnnotationsForLambdaTest is a test which checks that RuntimeVisibleParameterAnnotationsAttribute
42 * and RuntimeInvisibleParameterAnnotationsAttribute are not generated at all for lambda expressions.
43 * The test checks both single and repeatable annotations.
44 * All possible combinations of retention policies are tested.
45 *
46 * The test generates source code, compiles it and checks the byte code.
47 *
48 * See README.txt for more information.
49 */
50public class RuntimeParameterAnnotationsForLambdaTest extends RuntimeParameterAnnotationsTestBase {
51
52    private static final String CLASS_NAME = "Test";
53    private static final String SOURCE_TEMPLATE =
54            "public class " + CLASS_NAME + " {\n" +
55            "   interface I { void method(int a, double b, String c); }\n" +
56            "   %SOURCE%\n" +
57            "}";
58
59    public static void main(String[] args) throws TestFailedException {
60        new RuntimeParameterAnnotationsForLambdaTest().test();
61    }
62
63    @Override
64    public void test() throws TestFailedException {
65        try {
66            for (TestAnnotationInfos annotations : getAllCombinationsOfAnnotations()) {
67                try {
68                    TestCase.TestMethodInfo testMethodInfo = new TestCase.TestMethodInfo(0, null, "lambda", false, false);
69                    TestCase.TestParameterInfo p1 = testMethodInfo.addParameter("int", "a");
70                    annotations.annotate(p1);
71                    testMethodInfo.addParameter("double", "b");
72                    TestCase.TestParameterInfo p3 = testMethodInfo.addParameter("String", "c");
73                    annotations.annotate(p3);
74                    String source = SOURCE_TEMPLATE.replace("%SOURCE%", generateLambdaSource(testMethodInfo));
75                    addTestCase(source);
76                    echo("Testing:\n" + source);
77                    ClassFile classFile = readClassFile(compile(source).getClasses().get(CLASS_NAME));
78                    boolean isFoundLambda = false;
79                    for (Method method : classFile.methods) {
80                        if (method.getName(classFile.constant_pool).startsWith("lambda$")) {
81                            isFoundLambda = true;
82                            testAttributes(testMethodInfo, classFile, method);
83                        }
84                    }
85                    checkTrue(isFoundLambda, "The tested lambda method was not found.");
86                } catch (Exception e) {
87                    addFailure(e);
88                }
89            }
90        } finally {
91            checkStatus();
92        }
93    }
94
95    protected void testAttributes(
96            TestCase.TestMethodInfo testMethod,
97            ClassFile classFile,
98            Method method) throws ConstantPoolException {
99        Attributes attributes = method.attributes;
100        RuntimeParameterAnnotations_attribute attr = (RuntimeParameterAnnotations_attribute) attributes.get(Attribute.RuntimeInvisibleParameterAnnotations);
101        checkNull(attr, String.format("%s should be null", Attribute.RuntimeInvisibleParameterAnnotations));
102        attr = (RuntimeParameterAnnotations_attribute) attributes.get(Attribute.RuntimeVisibleParameterAnnotations);
103        checkNull(attr, String.format("%s should be null", Attribute.RuntimeVisibleParameterAnnotations));
104    }
105
106    public String generateLambdaSource(TestCase.TestMethodInfo method) {
107        return method.parameters.stream()
108                .map(TestCase.TestParameterInfo::generateSource)
109                .collect(Collectors.joining(", ", "I i = (", ") -> {};"));
110    }
111
112    @Override
113    public List<TestCase> generateTestCases() {
114        throw new UnsupportedOperationException();
115    }
116}
117