├── .gitignore ├── LICENSE.txt ├── README.md ├── build.gradle ├── mockableJar └── mockable-android-25.jar └── src ├── main └── java │ └── com │ └── android │ └── builder │ └── testing │ └── MockableJarGenerator.java └── test └── java └── com └── android └── builder └── testing ├── MockableJarGeneratorTest.java └── TestUtils.java /.gitignore: -------------------------------------------------------------------------------- 1 | /build 2 | -------------------------------------------------------------------------------- /LICENSE.txt: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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The text should be enclosed in the appropriate 184 | comment syntax for the file format. We also recommend that a 185 | file or class name and description of purpose be included on the 186 | same "printed page" as the copyright notice for easier 187 | identification within third-party archives. 188 | 189 | Copyright 2017 codezjx 190 | 191 | Licensed under the Apache License, Version 2.0 (the "License"); 192 | you may not use this file except in compliance with the License. 193 | You may obtain a copy of the License at 194 | 195 | http://www.apache.org/licenses/LICENSE-2.0 196 | 197 | Unless required by applicable law or agreed to in writing, software 198 | distributed under the License is distributed on an "AS IS" BASIS, 199 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 200 | See the License for the specific language governing permissions and 201 | limitations under the License. -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # MockableJarGenerator 2 | **MockableJarGenerator** is a modified version of official [MockableJarGenerator][1] which can generate a "mockable" version `android.jar` **(with enables internal and hidden APIs)**. You can find those `android.jar` in this project: [anggrayudi/android-hidden-api][2] 3 | 4 | ## Background 5 | 6 | Why we need this project? Because when you use a hidden-api's `android.jar`, the gradle task `mockableAndroidJar` will throws following error. 7 | 8 | ``` 9 | Error:Execution failed for task ':app:mockableAndroidJar'. 10 | > java.lang.NullPointerException (no error message) 11 | 12 | ``` 13 | 14 | So your unit testing may fail if you're trying to mock or depends on any android platform class. This error was throws by [asm][3] operation when generator trying to writes a modified *.class file to the output JAR file. 15 | 16 | This modified generator fixed the issus and you can manually place the generate `mockable-android-xx.jar` to following directory: `projectRootDir/build/generated/`. 17 | 18 | ## Usage 19 | 20 | ```java 21 | MockableJarGenerator generator = new MockableJarGenerator(false); 22 | File input = new File("android-xx.jar"); 23 | File output = new File("mockable-android-xx.jar"); 24 | try { 25 | generator.createMockableJar(input, output); 26 | } catch (IOException e) { 27 | e.printStackTrace(); 28 | } 29 | ``` 30 | 31 | ## Feedback 32 | 33 | Any issues or PRs are welcome! 34 | 35 | ## License 36 | 37 | Copyright 2017 codezjx 38 | 39 | Licensed under the Apache License, Version 2.0 (the "License"); 40 | you may not use this file except in compliance with the License. 41 | You may obtain a copy of the License at 42 | 43 | http://www.apache.org/licenses/LICENSE-2.0 44 | 45 | Unless required by applicable law or agreed to in writing, software 46 | distributed under the License is distributed on an "AS IS" BASIS, 47 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 48 | See the License for the specific language governing permissions and 49 | limitations under the License. 50 | 51 | [1]: https://android.googlesource.com/platform/tools/base/+/android-7.1.1_r58/build-system/builder/src/main/java/com/android/builder/testing/MockableJarGenerator.java 52 | [2]: https://github.com/anggrayudi/android-hidden-api/ 53 | [3]: http://asm.ow2.org/ -------------------------------------------------------------------------------- /build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'java' 2 | 3 | dependencies { 4 | compile fileTree(dir: 'libs', include: ['*.jar']) 5 | compile 'org.ow2.asm:asm:5.0.3' 6 | compile 'org.ow2.asm:asm-tree:5.0.3' 7 | compile 'com.google.guava:guava:23.0' 8 | 9 | testCompile 'junit:junit:4.12' 10 | } 11 | 12 | sourceCompatibility = "1.6" 13 | targetCompatibility = "1.6" 14 | -------------------------------------------------------------------------------- /mockableJar/mockable-android-25.jar: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/codezjx/MockableJarGenerator/938cf128fb9f26ebde0040e597cd8e8ca0893143/mockableJar/mockable-android-25.jar -------------------------------------------------------------------------------- /src/main/java/com/android/builder/testing/MockableJarGenerator.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (C) 2014 The Android Open Source Project 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 | * http://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 com.android.builder.testing; 18 | 19 | import com.google.common.base.Preconditions; 20 | import com.google.common.collect.ImmutableSet; 21 | import com.google.common.io.ByteStreams; 22 | 23 | import org.objectweb.asm.ClassReader; 24 | import org.objectweb.asm.ClassWriter; 25 | import org.objectweb.asm.Opcodes; 26 | import org.objectweb.asm.Type; 27 | import org.objectweb.asm.tree.AbstractInsnNode; 28 | import org.objectweb.asm.tree.ClassNode; 29 | import org.objectweb.asm.tree.FieldNode; 30 | import org.objectweb.asm.tree.InnerClassNode; 31 | import org.objectweb.asm.tree.InsnList; 32 | import org.objectweb.asm.tree.InsnNode; 33 | import org.objectweb.asm.tree.LdcInsnNode; 34 | import org.objectweb.asm.tree.MethodInsnNode; 35 | import org.objectweb.asm.tree.MethodNode; 36 | import org.objectweb.asm.tree.TypeInsnNode; 37 | 38 | import java.io.File; 39 | import java.io.FileOutputStream; 40 | import java.io.IOException; 41 | import java.io.InputStream; 42 | import java.lang.reflect.Constructor; 43 | import java.util.Collections; 44 | import java.util.List; 45 | import java.util.jar.JarEntry; 46 | import java.util.jar.JarFile; 47 | import java.util.jar.JarOutputStream; 48 | import java.util.zip.ZipEntry; 49 | 50 | /** 51 | * Given a "standard" android.jar, creates a "mockable" version, where all classes and methods 52 | * are not final. Optionally makes all methods return "default" values, instead of throwing the 53 | * infamous "Stub!" exceptions. 54 | */ 55 | public class MockableJarGenerator { 56 | private static final int EMPTY_FLAGS = 0; 57 | private static final String CONSTRUCTOR = ""; 58 | private static final String CLASS_CONSTRUCTOR = ""; 59 | 60 | private static final ImmutableSet ENUM_METHODS = ImmutableSet.of( 61 | CLASS_CONSTRUCTOR, "valueOf", "values"); 62 | 63 | private static final ImmutableSet INTEGER_LIKE_TYPES = ImmutableSet.of( 64 | Type.INT_TYPE, Type.BYTE_TYPE, Type.BOOLEAN_TYPE, Type.CHAR_TYPE, Type.SHORT_TYPE); 65 | 66 | private final boolean returnDefaultValues; 67 | private final ImmutableSet prefixesToSkip = ImmutableSet.of( 68 | "java.", "javax.", "org.xml.", "org.w3c.", "junit.", "org.apache.commons.logging"); 69 | 70 | public MockableJarGenerator(boolean returnDefaultValues) { 71 | this.returnDefaultValues = returnDefaultValues; 72 | } 73 | 74 | public void createMockableJar(File input, File output) throws IOException { 75 | Preconditions.checkState( 76 | output.createNewFile(), 77 | "Output file [%s] already exists.", 78 | output.getAbsolutePath()); 79 | 80 | JarFile androidJar = null; 81 | JarOutputStream outputStream = null; 82 | try { 83 | androidJar = new JarFile(input); 84 | outputStream = new JarOutputStream(new FileOutputStream(output)); 85 | 86 | for (JarEntry entry : Collections.list(androidJar.entries())) { 87 | InputStream inputStream = androidJar.getInputStream(entry); 88 | 89 | if (entry.getName().endsWith(".class")) { 90 | if (!skipClass(entry.getName().replace("/", "."))) { 91 | rewriteClass(entry, inputStream, outputStream); 92 | } 93 | } else { 94 | outputStream.putNextEntry(entry); 95 | ByteStreams.copy(inputStream, outputStream); 96 | } 97 | 98 | inputStream.close(); 99 | } 100 | } finally { 101 | if (androidJar != null) { 102 | androidJar.close(); 103 | } 104 | if (outputStream != null) { 105 | outputStream.close(); 106 | } 107 | } 108 | } 109 | 110 | private boolean skipClass(String className) { 111 | for (String prefix : prefixesToSkip) { 112 | if (className.startsWith(prefix)) { 113 | return true; 114 | } 115 | } 116 | return false; 117 | } 118 | 119 | /** 120 | * Writes a modified *.class file to the output JAR file. 121 | */ 122 | private void rewriteClass( 123 | JarEntry entry, 124 | InputStream inputStream, 125 | JarOutputStream outputStream) throws IOException { 126 | ClassReader classReader = new ClassReader(inputStream); 127 | ClassNode classNode = new ClassNode(Opcodes.ASM5); 128 | 129 | classReader.accept(classNode, EMPTY_FLAGS); 130 | 131 | modifyClass(classNode); 132 | 133 | ClassWriter classWriter = new ClassWriter(0); 134 | classNode.accept(classWriter); 135 | 136 | outputStream.putNextEntry(new ZipEntry(entry.getName())); 137 | outputStream.write(classWriter.toByteArray()); 138 | } 139 | 140 | /** 141 | * Modifies a {@link ClassNode} to clear final flags and rewrite byte code. 142 | */ 143 | @SuppressWarnings("unchecked") 144 | private void modifyClass(ClassNode classNode) { 145 | // Make the class not final. 146 | classNode.access &= ~Opcodes.ACC_FINAL; 147 | 148 | List methodNodes = classNode.methods; 149 | for (MethodNode methodNode : methodNodes) { 150 | methodNode.access &= ~Opcodes.ACC_FINAL; 151 | fixMethodBody(methodNode, classNode); 152 | } 153 | 154 | List fieldNodes = classNode.fields; 155 | for (FieldNode fieldNode : fieldNodes) { 156 | // Make public instance fields non-final. This is needed e.g. to "mock" SyncResult.stats. 157 | if ((fieldNode.access & Opcodes.ACC_PUBLIC) != 0 && 158 | (fieldNode.access & Opcodes.ACC_STATIC) == 0) { 159 | fieldNode.access &= ~Opcodes.ACC_FINAL; 160 | } 161 | } 162 | 163 | List innerClasses = classNode.innerClasses; 164 | for (InnerClassNode innerClassNode : innerClasses) { 165 | innerClassNode.access &= ~Opcodes.ACC_FINAL; 166 | } 167 | } 168 | 169 | /** 170 | * Rewrites the method bytecode to remove the "Stub!" exception. 171 | */ 172 | private void fixMethodBody(MethodNode methodNode, ClassNode classNode) { 173 | if ((methodNode.access & Opcodes.ACC_NATIVE) != 0 174 | || (methodNode.access & Opcodes.ACC_ABSTRACT) != 0) { 175 | // Abstract and native method don't have bodies to rewrite. 176 | return; 177 | } 178 | 179 | if ((classNode.access & Opcodes.ACC_ENUM) != 0 && ENUM_METHODS.contains(methodNode.name)) { 180 | // Don't break enum classes. 181 | return; 182 | } 183 | 184 | Type returnType = Type.getReturnType(methodNode.desc); 185 | InsnList instructions = methodNode.instructions; 186 | List localVariables = methodNode.localVariables; 187 | List tryCatchBlocks = methodNode.tryCatchBlocks; 188 | 189 | if (localVariables != null && !localVariables.isEmpty()) { 190 | localVariables.clear(); 191 | } 192 | if (tryCatchBlocks != null && !tryCatchBlocks.isEmpty()) { 193 | tryCatchBlocks.clear(); 194 | } 195 | 196 | if (methodNode.name.equals(CONSTRUCTOR)) { 197 | // Keep the call to parent constructor, delete the exception after that. 198 | 199 | boolean deadCode = false; 200 | for (AbstractInsnNode instruction : instructions.toArray()) { 201 | if (!deadCode) { 202 | if (instruction.getOpcode() == Opcodes.INVOKESPECIAL) { 203 | instructions.insert(instruction, new InsnNode(Opcodes.RETURN)); 204 | // Start removing all following instructions. 205 | deadCode = true; 206 | } 207 | } else { 208 | instructions.remove(instruction); 209 | } 210 | } 211 | } else { 212 | instructions.clear(); 213 | 214 | if (returnDefaultValues || methodNode.name.equals(CLASS_CONSTRUCTOR)) { 215 | if (INTEGER_LIKE_TYPES.contains(returnType)) { 216 | instructions.add(new InsnNode(Opcodes.ICONST_0)); 217 | } else if (returnType.equals(Type.LONG_TYPE)) { 218 | instructions.add(new InsnNode(Opcodes.LCONST_0)); 219 | } else if (returnType.equals(Type.FLOAT_TYPE)) { 220 | instructions.add(new InsnNode(Opcodes.FCONST_0)); 221 | } else if (returnType.equals(Type.DOUBLE_TYPE)) { 222 | instructions.add(new InsnNode(Opcodes.DCONST_0)); 223 | } else { 224 | instructions.add(new InsnNode(Opcodes.ACONST_NULL)); 225 | } 226 | 227 | instructions.add(new InsnNode(returnType.getOpcode(Opcodes.IRETURN))); 228 | } else { 229 | instructions.insert(throwExceptionsList(methodNode, classNode)); 230 | } 231 | } 232 | } 233 | 234 | private static InsnList throwExceptionsList(MethodNode methodNode, ClassNode classNode) { 235 | try { 236 | String runtimeException = Type.getInternalName(RuntimeException.class); 237 | Constructor constructor = 238 | RuntimeException.class.getConstructor(String.class); 239 | 240 | InsnList instructions = new InsnList(); 241 | instructions.add( 242 | new TypeInsnNode(Opcodes.NEW, runtimeException)); 243 | instructions.add(new InsnNode(Opcodes.DUP)); 244 | 245 | String className = classNode.name.replace('/', '.'); 246 | instructions.add(new LdcInsnNode("Method " + methodNode.name + " in " + className 247 | + " not mocked. " 248 | + "See http://g.co/androidstudio/not-mocked for details.")); 249 | instructions.add(new MethodInsnNode( 250 | Opcodes.INVOKESPECIAL, 251 | runtimeException, 252 | CONSTRUCTOR, 253 | Type.getType(constructor).getDescriptor(), 254 | false)); 255 | instructions.add(new InsnNode(Opcodes.ATHROW)); 256 | 257 | return instructions; 258 | } catch (NoSuchMethodException e) { 259 | throw new RuntimeException(e); 260 | } 261 | } 262 | } -------------------------------------------------------------------------------- /src/test/java/com/android/builder/testing/MockableJarGeneratorTest.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (C) 2014 The Android Open Source Project 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 | * http://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 com.android.builder.testing; 18 | 19 | 20 | import com.google.common.collect.ImmutableSet; 21 | import com.google.common.collect.Sets; 22 | import com.google.common.io.Files; 23 | 24 | import junit.framework.TestCase; 25 | 26 | import java.io.File; 27 | import java.util.Collections; 28 | import java.util.Set; 29 | import java.util.jar.JarEntry; 30 | import java.util.jar.JarFile; 31 | 32 | public class MockableJarGeneratorTest extends TestCase { 33 | 34 | public void testJarRewriting() throws Exception { 35 | MockableJarGenerator generator = new MockableJarGenerator(true); 36 | 37 | File inputJar = new File(TestUtils.getRoot("testing"), "non-mockable.jar"); 38 | File outputJar = new File(Files.createTempDir(), "mockable.jar"); 39 | 40 | generator.createMockableJar(inputJar, outputJar); 41 | 42 | assertTrue(outputJar.exists()); 43 | 44 | Set expectedEntries = ImmutableSet.of( 45 | "META-INF/", 46 | "META-INF/MANIFEST.MF", 47 | "NonFinalClass.class", 48 | "FinalClass.class"); 49 | 50 | Set actualEntries = Sets.newHashSet(); 51 | JarFile jarFile = new JarFile(outputJar); 52 | for (JarEntry entry : Collections.list(jarFile.entries())) { 53 | actualEntries.add(entry.getName()); 54 | } 55 | 56 | assertEquals(expectedEntries, actualEntries); 57 | // TODO: Verify bytecode? 58 | 59 | jarFile.close(); 60 | } 61 | } -------------------------------------------------------------------------------- /src/test/java/com/android/builder/testing/TestUtils.java: -------------------------------------------------------------------------------- 1 | /* 2 | * Copyright (C) 2012 The Android Open Source Project 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 | * http://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 com.android.builder.testing; 18 | 19 | import static org.junit.Assert.assertTrue; 20 | 21 | import com.google.common.io.Files; 22 | 23 | import junit.framework.TestCase; 24 | 25 | import java.io.File; 26 | import java.io.IOException; 27 | 28 | /** 29 | * Utility methods to deal with loading the test data. 30 | */ 31 | public class TestUtils { 32 | 33 | /** 34 | * returns a File for the subfolder of the test resource data. 35 | * 36 | * This is basically "src/test/resources/testData/$name". 37 | * 38 | * Note that this folder is relative to the root project which is where gradle 39 | * sets the current working dir when running the tests. 40 | * 41 | * If you need a full folder path, use {@link #getCanonicalRoot(String...)}. 42 | * 43 | * @param names the names of the subfolders. 44 | * 45 | * @return a File 46 | */ 47 | public static File getRoot(String... names) { 48 | File root = null; 49 | for (String name : names) { 50 | if (root == null) { 51 | root = new File("src/test/resources/testData/" + name); 52 | } else { 53 | root = new File(root, name); 54 | } 55 | 56 | // Hack: The sdk-common tests are not configured properly; running tests 57 | // works correctly from Gradle but not from within the IDE. The following 58 | // hack works around this quirk: 59 | if (!root.isDirectory() && !root.getPath().contains("sdk-common")) { 60 | File r = new File("sdk-common", root.getPath()).getAbsoluteFile(); 61 | if (r.isDirectory()) { 62 | root = r; 63 | } 64 | } 65 | 66 | TestCase.assertTrue("Test folder '" + name + "' does not exist! " 67 | + "(Tip: Check unit test launch config pwd)", 68 | root.isDirectory()); 69 | 70 | } 71 | 72 | return root; 73 | } 74 | 75 | /** 76 | * returns a File for the subfolder of the test resource data. 77 | * 78 | * The full path is canonized. 79 | * This is basically ".../src/test/resources/testData/$name". 80 | * 81 | * @param names the names of the subfolders. 82 | * 83 | * @return a File 84 | */ 85 | public static File getCanonicalRoot(String... names) throws IOException { 86 | File root = getRoot(names); 87 | return root.getCanonicalFile(); 88 | } 89 | 90 | public static void deleteFile(File dir) { 91 | if (dir.isDirectory()) { 92 | File[] files = dir.listFiles(); 93 | if (files != null) { 94 | for (File f : files) { 95 | deleteFile(f); 96 | } 97 | } 98 | } else if (dir.isFile()) { 99 | assertTrue(dir.getPath(), dir.delete()); 100 | } 101 | } 102 | 103 | public static File createTempDirDeletedOnExit() { 104 | final File tempDir = Files.createTempDir(); 105 | Runtime.getRuntime().addShutdownHook(new Thread() { 106 | @Override 107 | public void run() { 108 | deleteFile(tempDir); 109 | } 110 | }); 111 | 112 | return tempDir; 113 | } 114 | } --------------------------------------------------------------------------------