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1 /*
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2 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23
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24 /*
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25 * @test TestEmptyBootstrapMethodsAttr
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26 * @bug 8041918
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27 * @library /testlibrary
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28 * @summary Test empty bootstrap_methods table within BootstrapMethods attribute
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29 * @compile TestEmptyBootstrapMethodsAttr.java
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30 * @run main TestEmptyBootstrapMethodsAttr
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31 */
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32
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33 import java.io.File;
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34 import com.oracle.java.testlibrary.*;
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35
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36 public class TestEmptyBootstrapMethodsAttr {
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37
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38 public static void main(String args[]) throws Throwable {
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39 System.out.println("Regression test for bug 8041918");
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40 String jarFile = System.getProperty("test.src") + File.separator + "emptynumbootstrapmethods.jar";
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41
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42 // ====== extract the test case
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43 ProcessBuilder pb = new ProcessBuilder(new String[] { JDKToolFinder.getJDKTool("jar"), "xvf", jarFile } );
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44 OutputAnalyzer output = new OutputAnalyzer(pb.start());
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45 output.shouldHaveExitValue(0);
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46
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47 // Test case #1:
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48 // Try loading class with empty bootstrap_methods table where no
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49 // other attributes are following BootstrapMethods in attribute table.
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50 String className = "emptynumbootstrapmethods1";
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51
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52 // ======= execute test case #1
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53 // Expect a lack of main method, this implies that the class loaded correctly
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54 // with an empty bootstrap_methods and did not generate a ClassFormatError.
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55 pb = ProcessTools.createJavaProcessBuilder("-cp", ".", className);
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56 output = new OutputAnalyzer(pb.start());
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57 output.shouldNotContain("java.lang.ClassFormatError");
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58 output.shouldContain("Main method not found in class " + className);
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59 output.shouldHaveExitValue(1);
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60
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61 // Test case #2:
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62 // Try loading class with empty bootstrap_methods table where an
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63 // AnnotationDefault attribute follows the BootstrapMethods in the attribute table.
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64 className = "emptynumbootstrapmethods2";
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65
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66 // ======= execute test case #2
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67 // Expect a lack of main method, this implies that the class loaded correctly
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68 // with an empty bootstrap_methods and did not generate ClassFormatError.
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69 pb = ProcessTools.createJavaProcessBuilder("-cp", ".", className);
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70 output = new OutputAnalyzer(pb.start());
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71 output.shouldNotContain("java.lang.ClassFormatError");
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72 output.shouldContain("Main method not found in class " + className);
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73 output.shouldHaveExitValue(1);
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74 }
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75 }
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