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1 /* |
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2 * Copyright (c) 2018, 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 |
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26 * @bug 8193524 |
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27 * @summary Redefine a class' public static method that contains a lambda expression |
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28 * @library /test/lib |
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29 * @modules java.base/jdk.internal.misc |
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30 * @modules java.compiler |
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31 * java.instrument |
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32 * jdk.jartool/sun.tools.jar |
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33 * @run main RedefineClassHelper |
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34 * @run main/othervm -javaagent:redefineagent.jar -Xlog:redefine+class*=trace RedefineAddLambdaExpression |
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35 */ |
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36 |
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37 interface MathOperation { |
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38 public int operation(int a, int b); |
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39 } |
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40 |
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41 class B { |
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42 public static int operate(int a, int b, MathOperation mathOperation) { |
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43 return mathOperation.operation(a, b); |
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44 } |
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45 static int test_math(String p) { |
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46 MathOperation addition = (int a, int b) -> a + b; |
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47 return operate(10, 5, addition); |
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48 } |
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49 } |
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50 |
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51 public class RedefineAddLambdaExpression { |
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52 |
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53 public static String newB = |
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54 "class B {" + |
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55 " public static int operate(int a, int b, MathOperation mathOperation) {" + |
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56 " return mathOperation.operation(a, b);" + |
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57 " }" + |
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58 " static int test_math(String p) {" + |
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59 " MathOperation addition = (int a, int b) -> a + b;" + |
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60 " System.out.println(p + \" from class B's test_math method\");" + |
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61 " MathOperation subtraction = (int a, int b) -> a - b;" + |
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62 " return operate(10, 5, subtraction);" + |
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63 " }" + |
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64 "}"; |
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65 |
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66 public static void main(String[] args) throws Exception { |
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67 int res = B.test_math("Hello"); |
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68 System.out.println("Result = " + res); |
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69 if (res != 15) { |
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70 throw new Error("test_math returned " + res + " expected " + 15); |
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71 } |
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72 RedefineClassHelper.redefineClass(B.class, newB); |
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73 |
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74 res = B.test_math("Hello"); |
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75 if (res != 5) |
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76 throw new Error("test_math returned " + res + " expected " + 5); |
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77 } |
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78 } |