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| 1 | +/* |
| 2 | + * Copyright 2022 the original author or authors. |
| 3 | + * |
| 4 | + * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | + * you may not use this file except in compliance with the License. |
| 6 | + * You may obtain a copy of the License at |
| 7 | + * |
| 8 | + * https://www.apache.org/licenses/LICENSE-2.0 |
| 9 | + * |
| 10 | + * Unless required by applicable law or agreed to in writing, software |
| 11 | + * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | + * See the License for the specific language governing permissions and |
| 14 | + * limitations under the License. |
| 15 | + */ |
| 16 | + |
| 17 | +package org.springframework.integration.support.serializer; |
| 18 | + |
| 19 | +import java.io.FileInputStream; |
| 20 | +import java.io.FileOutputStream; |
| 21 | +import java.io.InvalidClassException; |
| 22 | +import java.io.ObjectInputStream; |
| 23 | +import java.io.ObjectOutputStream; |
| 24 | +import java.io.Serializable; |
| 25 | + |
| 26 | +import org.junit.jupiter.api.Disabled; |
| 27 | +import org.junit.jupiter.api.Nested; |
| 28 | +import org.junit.jupiter.api.Test; |
| 29 | + |
| 30 | +import static org.assertj.core.api.Assertions.assertThat; |
| 31 | +import static org.assertj.core.api.Assertions.assertThatThrownBy; |
| 32 | + |
| 33 | +/** |
| 34 | + * Unit tests for {@link VersionTolerantJavaDeserializer}. |
| 35 | + */ |
| 36 | +public class VersionTolerantJavaDeserializerTests { |
| 37 | + |
| 38 | + @Test |
| 39 | + void failsWhenNoAlternateUIDsConfigured() throws Exception { |
| 40 | + assertThat(Foo.serialVersionUID).isEqualTo(3L); |
| 41 | + String fileName = "./src/test/resources/deser/foo2"; |
| 42 | + VersionTolerantJavaDeserializer deser = new VersionTolerantJavaDeserializer(); |
| 43 | + try (FileInputStream fis = new FileInputStream(fileName)) { |
| 44 | + assertThatThrownBy(() -> deser.deserialize(fis)) |
| 45 | + .isInstanceOf(InvalidClassException.class); |
| 46 | + } |
| 47 | + } |
| 48 | + |
| 49 | + @Test |
| 50 | + void passesWhenAlternateUIDsConfigured() throws Exception { |
| 51 | + assertThat(Foo.serialVersionUID).isEqualTo(3L); |
| 52 | + |
| 53 | + VersionTolerantJavaDeserializer deser = new VersionTolerantJavaDeserializer(); |
| 54 | + deser.allowSerialVersionUID(VersionTolerantJavaDeserializerTests.Foo.class, 1L); |
| 55 | + deser.allowSerialVersionUID(VersionTolerantJavaDeserializerTests.Foo.class, 2L); |
| 56 | + |
| 57 | + String fileName = "./src/test/resources/deser/foo1"; |
| 58 | + try (FileInputStream fis = new FileInputStream(fileName)) { |
| 59 | + VersionTolerantJavaDeserializerTests.Foo oldFoo = (VersionTolerantJavaDeserializerTests.Foo) deser.deserialize(fis); |
| 60 | + assertThat(oldFoo.toString()).isEqualTo("Foo (name=uno, serialVersionUID=3)"); |
| 61 | + } |
| 62 | + |
| 63 | + fileName = "./src/test/resources/deser/foo2"; |
| 64 | + try (FileInputStream fis = new FileInputStream(fileName)) { |
| 65 | + VersionTolerantJavaDeserializerTests.Foo oldFoo = (VersionTolerantJavaDeserializerTests.Foo) deser.deserialize(fis); |
| 66 | + assertThat(oldFoo.toString()).isEqualTo("Foo (name=dos, serialVersionUID=3)"); |
| 67 | + } |
| 68 | + } |
| 69 | + |
| 70 | + @Disabled |
| 71 | + @Nested |
| 72 | + class GenerateSerializedFiles { |
| 73 | + |
| 74 | + @Test |
| 75 | + void generateOldFoo1SerializedFile() throws Exception { |
| 76 | + // Only run this once to generate the Foo1 serialized file - make sure Foo.serialVersionUID = 1L before running |
| 77 | + assertThat(Foo.serialVersionUID).isEqualTo(1L); |
| 78 | + String filename = "./src/test/resources/deser/foo1"; |
| 79 | + doGenerateOldFooSerializedFile(filename, new Foo("uno")); |
| 80 | + } |
| 81 | + |
| 82 | + @Test |
| 83 | + void generateOldFoo2SerializedFile() throws Exception { |
| 84 | + // Only run this once to generate the Foo2 serialized file - make sure Foo.serialVersionUID = 2L before running |
| 85 | + assertThat(Foo.serialVersionUID).isEqualTo(2L); |
| 86 | + String filename = "./src/test/resources/deser/foo2"; |
| 87 | + doGenerateOldFooSerializedFile(filename, new Foo("dos")); |
| 88 | + } |
| 89 | + |
| 90 | + private void doGenerateOldFooSerializedFile(String filename, Foo foo) throws Exception { |
| 91 | + FileOutputStream fos = new FileOutputStream(filename); |
| 92 | + ObjectOutputStream oos = new ObjectOutputStream(fos); |
| 93 | + oos.writeObject(foo); |
| 94 | + fos.close(); |
| 95 | + FileInputStream fis = new FileInputStream(filename); |
| 96 | + ObjectInputStream ois = new ObjectInputStream(fis); |
| 97 | + Foo fooDeser = (Foo) ois.readObject(); |
| 98 | + assertThat(fooDeser.getName()).isEqualTo(foo.getName()); |
| 99 | + fis.close(); |
| 100 | + } |
| 101 | + } |
| 102 | + |
| 103 | + static class Foo implements Serializable { |
| 104 | + |
| 105 | + private static final long serialVersionUID = 3L; |
| 106 | + |
| 107 | + private String name; |
| 108 | + |
| 109 | + public Foo(String name) { |
| 110 | + this.name = name; |
| 111 | + } |
| 112 | + |
| 113 | + public String getName() { |
| 114 | + return this.name; |
| 115 | + } |
| 116 | + |
| 117 | + public String toString() { |
| 118 | + return String.format("Foo (name=%s, serialVersionUID=%d)", this.name, serialVersionUID); |
| 119 | + } |
| 120 | + } |
| 121 | +} |
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